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A real-time audio effect processor designed for audio enthusiasts to enhance their music listening experience. EffeTune allows you to process any audio source through various high-quality effects, enabling you to customize and perfect your listening experience in real-time.
EffeTune was created for audio enthusiasts who want to elevate their music listening experience. Whether you're streaming music or playing from physical media, EffeTune lets you add high-quality effects to customize the sound to your exact preferences. Transform your computer into a powerful audio effects processor that sits between your audio source and your speakers or amplifier.
No audiophile myths, Just pure science.
- Real-time audio processing
- Drag-and-drop interface for building effect chains
- Expandable effect system with categorized effects
- Live audio visualization
- Customizable Visualizer layouts with animated graphs, artwork, and track details
- Audio pipeline that can be modified in real-time
- Offline audio file processing with current effect chain
- Music Library for browsing local subfolders, metadata, and playlists
- Compact, always-on-top mini player for the desktop app
- Frequency response measurement and correction for system calibration
- Multi-channel processing and output
- Mobile-friendly web layout for phone and tablet use
Use Android 10 or later with an up-to-date Android System WebView. Open music files or select a folder in Music Library; Android asks which files and folders EffeTune may use. If a folder becomes unavailable, select it again in the library. Playback continues with the screen off, and notification and lock-screen controls operate the same player.
Save or share exported files through Android's file and sharing screens. Batch audio export asks for an output folder and runs while the app is open. The Android app and the web app keep separate data. Use Backup / Restore to exchange presets, impulse responses, measurements, and visualizer data (up to 256 MB); music files, the music catalog, connection credentials, and settings are not included. Effects process audio played or received by EffeTune; they do not replace the sound of other Android apps.
MIDI parameter mappings and scheduled parameter changes continue with the screen off. Keyboard and gamepad controls require the app to be open. Android supports MIDI input; motor-fader and LED feedback are not sent. Tap the Remote Control toolbar icon to allow incoming control and copy a pairing link. Keep that link private.
Choose the setup below that matches the audio source you want to listen to.
- Open the EffeTune web app in your browser, or launch the EffeTune desktop app
- Open and play a music file to ensure proper playback
- Click the Open music files button and select a music file
- Or open a music file and select EffeTune as the application (desktop app only)
- Or select Open music file... from the File menu (desktop app only)
- Or drag the music file into the window
- For player-only use, set Input Device to None (music file player only) in Audio Configuration to avoid using a live audio input. This is the desktop app's default; saved input device selections are preserved.
The desktop app's Browser plays audio from websites through your current effects without a virtual audio device.
- Click Browser in the header. This starts browser audio processing.
- Enter an HTTP or HTTPS address, then sign in and play music using the website's controls. An address without a scheme opens with HTTPS.
- Switch to Effect Pipeline to adjust the sound. Switching views keeps browser audio playing.
Use Back, Forward, Reload, and Stop to navigate. Open Bookmarks to add the current page, open a saved page, rename a bookmark, or delete it. The browser menu contains Show start page, Open in default browser, Use as start page, and Clear site data. Bookmarks and the chosen start page are saved. Website sign-ins are kept separately, so you can return to a site after restarting the app. Browser pages follow the app's zoom level. Default scrollbars follow the app's theme colors; websites can supply their own scrollbar styles.
While the browser toolbar has focus, use F5 to reload, F6 to select the address, Alt+Left/Right to go back or forward, and Alt+Home to show the start page. These shortcuts also work within a page. With a page focused, Ctrl/Cmd+L selects the address, Ctrl/Cmd+R reloads, and Ctrl/Cmd+D opens Bookmarks; on macOS, Cmd+[/] goes back or forward. Escape stops a loading page. Right-click a page for navigation, a link to open it here or in your default browser or copy its address, and selected text or a text field for available editing commands. Outside the page, existing app shortcuts keep their usual functions.
Opening or returning to Browser automatically selects browser audio. Browser audio is mixed with your selected input device. Choose None for the input device to listen to browser audio alone. The Player input option does not affect Browser playback. Local music playback can continue alongside browser audio. If audio capture stops, click Browser again to retry. Clear site data signs you out of websites and clears their stored data while keeping bookmarks.
Use Close on the browser toolbar to stop browser audio processing and return to Effect Pipeline. The page and browsing history are kept. Open Browser again to resume audio processing on the same page.
In Settings > Config... > Browser:
- Start page sets the HTTP or HTTPS address shown when Browser first opens. The field is blank by default; when blank, it opens the EffeTune streaming guide. Reset clears the field without changing the current page.
- Open new tabs in the default browser is enabled by default. Turn it off to open new-tab links in EffeTune's Browser instead. Separate windows, such as sign-in windows, stay inside EffeTune either way.
- User-Agent is the browser identification sent to websites. The default identifies Browser as Chrome-compatible and includes the EffeTune name. Leave the field blank or click Reset to restore the default. After changing it, reload the page in Browser.
To switch effects automatically between websites, save your pipelines as presets first. Under URL rules, click Add rule, enter a website and path such as example.com/music/*, and select a pipeline preset. Omit http:// or https://, query strings, and # fragments; * matches any text. Use the up/down buttons to set priority, then click Save rules. The first enabled matching rule with an available preset wins.
Rules apply while Browser audio is selected, including when you switch to another view. Saving rules, opening Browser, or navigating to a matching page can load its preset. Navigation within the same preset's rule keeps your manual adjustments. If no rule matches, your current pipeline stays unchanged.
Some websites do not allow embedded browsers, sign-in, protected playback, or audio capture. Availability depends on the website and operating system; DRM playback is not guaranteed. If sign-in is refused, try another sign-in method offered by the site or use your normal browser. Signing in there does not sign you in inside EffeTune. The Browser feature is available only in the desktop app.
Process up to four Chrome or Edge tabs with separate effect pipelines, URL-based preset selection, and a selectable sample rate, without a virtual audio device. See the Browser Extension guide.
- Install the EffeTune extension for Chrome or Edge.
- Play audio in the tab you want to process, open EffeTune from the browser toolbar, and choose Start on this tab.
- Choose Edit pipeline to add effects and adjust the sound.
To process audio from streaming services (Spotify, YouTube Music, etc.):
In the desktop app, first try Desktop Browser Setup. To use a separate streaming app or a source that the built-in browser cannot play, use the audio-device setup below.
-
Prerequisites:
- Install a virtual audio device (e.g., VB Cable, Voice Meeter, or ASIO Link Tool)
- Configure your streaming service to output audio to the virtual audio device
-
Configuration:
- Open the EffeTune web app in your browser, or launch the EffeTune desktop app
- Select the virtual audio device as the input source
- In Chrome, the first time you open it, a dialog box appears asking you to select and allow audio input
- Open Audio Configuration from the Settings menu to choose input/output devices and audio format
- Start playing music from your streaming service
- Verify that audio is flowing through EffeTune
- For more detailed setup instructions, see the FAQ
To use EffeTune with CD players, network players, or other physical sources:
- Connect your audio interface to your computer
- Open the EffeTune web app in your browser, or launch the EffeTune desktop app
- Select your audio interface as the input and output source
- In Chrome, the first time you open it, a dialog box appears asking you to select and allow audio input
- Open Audio Configuration from the Settings menu to choose input/output devices and audio format
- Your audio interface now functions as a multi-effects processor:
- Input: Your CD player, network player, or other audio source
- Processing: Real-time effects through EffeTune
- Output: Processed audio to your amplifier or speakers
The desktop app opens maximized on first launch. On subsequent launches, it restores the window's previous size, position, and maximized state.
On your first launch, a short tour shows you where to play music, add effects, and adjust your sound. You can reopen it anytime with Take the tour in the settings menu, the desktop app's Help menu, or the menu button on mobile.
- Available effects are listed on the left side of the screen
- Use the search button next to "Available Effects" to filter effects
- Type any text to find effects by name or category
- Press ESC to clear the search
- Drag effects from the list to the Effect Pipeline area
- On mobile, open the Effects tab and tap the + button to add effects from the full-screen list
- Effects are processed in order from top to bottom
- Drag the handle (⋮) or click the ▲▼ buttons to reorder the effects
- For Section effects: Shift+click the ▲▼ buttons to move entire sections (from one Section to the next Section, pipeline beginning, or end of pipeline)
- Click an effect's name to expand/collapse its settings
- Shift+click on a Section effect to collapse/expand all effects within that section
- Shift+click on other effects to collapse/expand all effects except for the Analyzer category
- Ctrl+click to collapse/expand all effects
- Use the ON button to bypass individual effects
- Click the ? button to open its detailed documentation in a new tab
- Remove effects using the × button
- For Section effects: Shift+click the × button to remove entire sections
- Click the routing button to set the channels to be processed and the input and output busses
- Click an effect's Effect Presets button to save or apply settings for that effect only
Click the padlock next to × to lock or unlock an effect's settings. Locking prevents changes through its parameter controls, reset, Effect Presets, and routing. Audio processing, ON/OFF, reordering, collapsing, and removal remain available. Collapsed and locked states are saved and restored with the pipeline, including pipeline presets and the last session. The padlock is yellow while locked and blinks if you try to edit. Graph readouts and display tabs remain available.
You can organize the music files stored on your device in a library.
- Open Music Library from the PC header, the mobile Library tab, or View > Music Library in the desktop app.
- Select Add Music Folder to index a folder of music files. External CUE sheets can divide WAV or FLAC album files in the same folder into individual tracks.
- Browse Tracks, Albums, Artists, Genres, Subfolders, Folders, Recently Added, or Playlists, and use Search library to filter your collection.
- Use Play to listen through the current effect pipeline, or use Play Next, Add to Queue, and Add to Playlist to manage playback.
- Use Rescan after changing files, and Reconnect if a browser or folder permission is lost.
You can enjoy visualizations based on the music that is playing.
Open Visualizer from the PC header, the mobile Player tab, or the desktop View menu. Choose a built-in layout or select Edit to arrange audio graphs, artwork, and track information. Changes take effect immediately and return at the next launch; use the preset dialog to save a named copy. Hover over or tap the display and select ⛶ to fill the app window. See the Visualizer guide for editing, effects, and display options.
You can save and load the effect pipelines you create.
Click the Pipeline Presets button in the Effect Pipeline header to open the preset dialog.
- Load a preset by selecting it from the saved preset list. This restores the complete effect chain, including effect order, settings, and ON/OFF states.
- Save the current effect chain by entering a name and selecting Save.
- Rename a saved preset with its rename button.
- Select one or more saved presets, then choose Delete Selected and confirm to remove them.
- Press Ctrl+S (or Cmd+S on macOS) to open the dialog with the current preset name ready to edit.
Each effect also has its own Effect Presets button. It opens system presets when the effect provides them and lets you save, rename, load, or remove your own settings for that effect. Effect presets change only that effect's parameters; they do not change its ON/OFF state or routing.
The existing .effetune_preset file import, export, and sharing features continue to use complete effect-chain presets.
For finished stereo mixes, System Presets > Mastering offers ten genre-based chains, including a heavily compressed J-Pop Dense preset. See Mastering Presets for choosing a chain, adjusting input level, and exporting processed audio.
- For fine slider adjustment, hold Shift while dragging; the value changes by one minimum step at a time
- For sliders with both negative and positive values, the fill extends from 0 to the current value. Ratio sliders use 1.0 as their starting point.
- On supported frequency and note graphs, drag along the graph's axis to preview the selected frequency through the effect chain. In Config > General > Frequency Preview Sound, choose Sine Wave (default, -12 dB) or Band-pass Noise, which plays noise centered on that frequency. Note Spectrogram, Pitch Meter, Chroma Spiral, and piano-key displays always use a sine wave. Piano-key displays snap to the nearest semitone; dragging over a key previews that key's pitch
Control effect parameters with MIDI, gamepads, or the keyboard
You can group multiple effects and control them together.
- Section Effect Usage:
- Add a Section effect at the beginning of a group of effects
- Enter a descriptive name in the Comment field
- Toggling the Section ON/OFF bypasses or restores that section while preserving each effect's own ON/OFF state
- Use multiple Section effects to organize your effect chain into logical groups
- More about control effects
You can switch between two effect pipelines to compare how they sound.
-
AB Pipeline Overview:
- EffeTune can maintain two separate effect pipelines: Pipeline A and Pipeline B
- At startup, only Pipeline A is loaded; Pipeline B is created when needed
- All processing, saving, loading, and editing operations work on the currently selected pipeline
-
AB Toggle Button:
- Located to the right of the Effect Pipeline header
- Shows "A" by default (Pipeline A active)
- Click to switch between Pipeline A and Pipeline B
- If Pipeline B doesn't exist when toggling, Pipeline A's settings are copied to Pipeline B
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AB Menu (Dropdown Button):
- Located to the right of the AB toggle button
- "A → B": Copy Pipeline A settings to Pipeline B and switch to Pipeline B
- "B → A": Copy Pipeline B settings to Pipeline A and switch to Pipeline A
-
Double Blind Test:
- Compare Pipeline A and Pipeline B by ear without knowing which one is playing
- Run an ABX test to check whether you can really tell the two pipelines apart, or an A/B preference test to find out which one you prefer, with a statistical significance check
- Open it from the ▼ pipeline menu to the right of the AB toggle button (also available from the File menu in the desktop app)
- More about the Double Blind Test
-
Effect Selection Methods:
- Click on effect headers to select individual effects
- Hold Ctrl while clicking to select multiple effects
- Click on empty space in the Pipeline area to deselect all effects
-
Keyboard Shortcuts:
- Ctrl + Z: Undo
- Ctrl + Y: Redo
- Ctrl + S: Save the current pipeline
- Ctrl + Shift + S: Save current pipeline as
- Ctrl + X: Cut selected effects
- Ctrl + C: Copy selected effects
- Ctrl + V: Paste effects from clipboard
- Ctrl + F: Search for effects
- Ctrl + A: Select all effects in the pipeline
- Delete: Delete selected effects
- ESC: Deselect all effects
- T: Toggle between Pipeline A and Pipeline B
- A: Switch to Pipeline A
- B: Switch to Pipeline B
-
Keyboard Shortcuts (when using the player):
- Space: Play/Pause
- Ctrl + → or N: Next track
- Ctrl + ← or P: Previous track
- Shift + → or F or .: Fast-forward 10 seconds
- Shift + ← or R or ,: Rewind 10 seconds
- Ctrl + M: Toggle Repeat mode
- Ctrl + H: Toggle Shuffle mode
- T: Toggle Pipeline A/B
- A: Switch to Pipeline A
- B: Switch to Pipeline B
You can apply the effect chain to music files and save the processed audio as new files.
-
File Drop or File Specification Area:
- A dedicated drop area is always visible below the Effect Pipeline
- Supports single or multiple audio files
- Files are processed using the current Pipeline settings
- Effects are processed at the Pipeline's sample rate; any output sample-rate conversion happens afterward
-
Processing Status:
- Progress bar shows current processing status
- Processing time depends on file size and effect chain complexity
-
Download or Save Options:
- In Settings > Config > Offline file output, choose WAV or FLAC, plus its sample rate and quality. For FLAC, choose 16-bit or 24-bit lossless encoding. The default is WAV at 96 kHz with 24-bit PCM
- Formats have different channel limits. EffeTune stops with guidance instead of automatically downmixing a file that exceeds the selected format's limit
- For multiple files, select an output folder before processing begins; each file is saved directly to that folder as it completes
- On older browsers without folder selection support, multiple files are packaged into a ZIP file for download
You can share your effect chain configuration with other users.
- After setting up your desired effect chain, click the "Share" button in the top-right corner of the Effect Pipeline area
- The web app URL will be automatically copied to your clipboard
- Share the copied URL with others - they can recreate your exact effect chain by opening it
- Shared URLs store the effect settings needed for reproduction; the web app also restores your normal working state from browser storage
- In the desktop app version, export the settings to an
.effetune_presetfile from the File menu - Share the exported
.effetune_presetfile. The.effetune_presetfile can also be loaded by dragging it into the web app window
Open Settings > Backup / Restore to move saved pipeline presets, effect presets, impulse responses, and measurements between the web app, desktop app, and browser extension. In the web and desktop apps, named Visualizer presets can also be included. Selecting a preset automatically selects any measurement or impulse-response data it uses.
Include measurement data and Include impulse response data are enabled by default so backups are self-contained. Turn either option off only when the destination already has the matching measurement or impulse-response files. Restored impulse responses are added to EffeTune's Impulse Response Library. Restoring a backup does not change the current pipeline, volume, selected preset, device settings, Music Library, or extension URL rules. Each .effetune_backup file supports up to 256 MB; split larger backups into separate files if needed. If restoration stops, completed items remain and you can safely restore the same file again.
Before sharing a backup, review the selection: it can contain preset names and comments, original impulse-response files, and measurement details. Music files, Music Library data, application preferences, device choices, URL rules, credentials, and an unsaved current pipeline are not included.
Open Settings > Config... to choose Language, set Startup view: (Effect Pipeline (Default), Music Library, or Visualizer), configure Effect Pipeline at startup:, and select a Theme (Graphite, Paper, Midnight, Ember, or Mint). When Startup view: is set to Music Library, you can also choose which library category opens first. In the desktop app, you can also select Browser as the startup view.
For Effect Pipeline columns, choose Manual to adjust the column count with the +/− buttons, or Automatic (default) to fit the columns alongside the effect list within the window width. Automatic mode adjusts the column count when you resize the window.
The Microsoft Store edition receives updates through Microsoft Store. In Settings > Config..., use Open Microsoft Store updates to check for updates and Open Windows startup settings to choose whether EffeTune starts automatically. This edition stores its settings and Browser sign-ins separately from other desktop editions.
Measure your audio system with a microphone to inspect frequency response, impulse response, distortion, and decay, and create a correction EQ that can be imported into EffeTune; see Acoustic Measurement and the Pipeline Analyzer guide.
If you experience audio issues (dropouts, glitches):
- Choose "Reset Audio" from the Settings menu or mobile overflow menu. In the desktop app, you can also select Reload from the View menu
- The audio pipeline will be rebuilt automatically
- Your effect chain configuration will be preserved
Desktop app: Browse network music servers, including Subsonic / OpenSubsonic, share selected music folders, and choose this device, an OpenHome player, or a UPnP AV / DLNA player for playback. An EffeTune player's effects can be edited in the same window after pairing. Sharing and incoming remote control start disabled. See network music and remote control. UPnP AV / DLNA and AirPlay reception can also be enabled to listen to music sent from other devices through this computer’s effects.
The PWA can play a registered EffeTune computer’s shared music and permitted network libraries through this device’s effects, or control a permitted network player. Direct Subsonic connections are also available. See PWA setup and playback for browser and connection requirements.
Codex or Claude Code can set up MCP and then help you add effects, adjust their settings, and load or save presets in the EffeTune desktop app. Use an agent that can run commands on your computer.
- In the EffeTune desktop app, open Settings > Remote Control..., turn on Allow remote control, and select Copy link.
- Paste the prompt below into your AI agent, replacing the placeholder with the copied link:
Set up EffeTune MCP following the official guide below.
https://github.com/Frieve-A/effetune/blob/main/mcp/README.md
Pairing link: <paste the copied link here>
After setup, follow any restart instructions, then try asking, "Show my current effects." Keep the pairing link private; if you select New token or change the port, repeat setup with the new link.
Add songs to the paired EffeTune app's Music Library, then ask, "Play [song]." The assistant checks that app's library first and plays through its player by default; you do not need to share its music folder. To use another library or player, name it in your request: "Find [song] in [library] and play it on [player]." If another EffeTune computer supplies the music, share its folder there first.
Here are some popular effect combinations to enhance your listening experience:
- Stereo Blend -> RS Reverb
- Stereo Blend: Adjusts stereo width for comfort (60-100%)
- RS Reverb: Adds subtle room ambience (10-20% mix)
- Result: More natural, less fatiguing headphone listening
- Wow Flutter -> Noise Blender -> Saturation
- Wow Flutter: Adds gentle pitch variation
- Noise Blender: Creates vinyl-like atmosphere
- Saturation: Adds analog warmth
- Result: Authentic vinyl record experience
- Multiband Compressor -> Stereo Blend
- Multiband Compressor: Creates that "radio" sound
- Stereo Blend: Adjusts stereo width for comfort (100-150%)
- Result: FM-radio-style polished sound
- Bit Crusher -> Simple Jitter -> RS Reverb
- Bit Crusher: Reduces bit depth for retro feel
- Simple Jitter: Adds digital imperfections
- RS Reverb: Creates atmospheric space
- Result: Classic lo-fi aesthetic
If you encounter any issues, please refer to the Troubleshooting and FAQ. If the problem persists, report it through GitHub Issues.
| Category | Effect | Description | Documentation |
|---|---|---|---|
| Analyzer | Analog Meter | Shows channel levels on a needle meter with VU, PPM, peak, and loudness scales | Details |
| Analyzer | Chroma Spiral | Shows frequency components by note and octave on a spiral | Details |
| Analyzer | Level Meter | Displays audio level with peak hold | Details |
| Analyzer | Note Spectrogram | Shows estimated pitches over time as a scrolling piano roll | Details |
| Analyzer | Oscilloscope | Real-time waveform visualization | Details |
| Analyzer | Pitch Meter | Tracks one fundamental pitch and its tuning over time | Details |
| Analyzer | Rhythm Analyzer | Shows tempo and hit timing by frequency band or drum class | Details |
| Analyzer | Spectrogram | Shows frequency spectrum changes over time | Details |
| Analyzer | Spectrum Analyzer | Shows the strength of bass, mids, and treble in real time | Details |
| Analyzer | Stereo Meter | Visualizes stereo balance and channel correlation | Details |
| Basics | Bass Management | Redirects low frequencies to one or more subwoofers and sums LFE with main-channel bass | Details |
| Basics | Channel Divider | Splits stereo signal into frequency bands and routes each band to separate stereo output pairs | Details |
| Basics | DC Offset | DC offset adjustment | Details |
| Basics | FIR Crossover | FIR crossover that routes steeply separated frequency bands to stereo output pairs | Details |
| Basics | Matrix | Routes and mixes audio channels with flexible control | Details |
| Basics | MultiChannel Panel | Control panel for multiple channels with volume, mute, solo and delay | Details |
| Basics | Mute | Completely silences the audio signal | Details |
| Basics | Polarity Inversion | Signal polarity inversion | Details |
| Basics | Stereo Balance | Stereo channel balance control | Details |
| Basics | Volume | Basic volume control | Details |
| Delay | Delay | Standard delay effect | Details |
| Delay | Time Alignment | Fine-tunes playback timing for speaker and listening-position alignment | Details |
| Dynamics | Attack Tonal Balance | Balances short attacks and sustained tonal structure | Details |
| Dynamics | Auto Leveler | Automatic volume adjustment based on LUFS measurement for consistent listening experience | Details |
| Dynamics | Brickwall Limiter | Limits signal peaks to prevent digital clipping | Details |
| Dynamics | Compressor | Smooths sudden loud passages for more comfortable listening | Details |
| Dynamics | Expander | Restores dynamic contrast by making below-threshold quiet sounds quieter | Details |
| Dynamics | Gate | Reduces low-level sound during gaps or quiet sections | Details |
| Dynamics | Multiband Compressor | 5-band volume balancing for a steady, radio-like listening sound | Details |
| Dynamics | Multiband Expander | 5-band expander for restoring natural contrast in overly flat recordings | Details |
| Dynamics | Multiband Transient | Shapes attack and sustain separately across bass, mid, and treble ranges | Details |
| Dynamics | Power Amp Sag | Simulates power amplifier voltage sag under high load conditions | Details |
| Dynamics | Transient Shaper | Adjusts the punch and body of music by shaping attacks and sustain | Details |
| EQ | 15Band GEQ | 15-band graphic equalizer | Details |
| EQ | 15Band PEQ | 15-band parametric equalizer for detailed listening tone adjustment | Details |
| EQ | 5Band Dynamic EQ | 5-band dynamic equalizer with threshold-based frequency adjustment | Details |
| EQ | 5Band FIR PEQ | Five-band parametric tone shaping implemented as a minimum- or linear-phase FIR filter | Details |
| EQ | 5Band PEQ | Flexible 5-band equalizer for shaping bass, mids, and treble | Details |
| EQ | Band Pass Filter | Focus on specific frequencies | Details |
| EQ | Comb Filter | Adds phasey, hollow, or metallic coloration | Details |
| EQ | Earphone Cable Sim | Helps check how small normal earphone-cable response shifts usually are | Details |
| EQ | Group Delay EQ | Adjusts the delay of each frequency band without changing the tone | Details |
| EQ | Group Delay PEQ | Five-band parametric control of per-frequency delay without changing the tone | Details |
| EQ | Hi Pass Filter | Remove unwanted low frequencies with precision | Details |
| EQ | Lo Pass Filter | Remove unwanted high frequencies with precision | Details |
| EQ | Loudness Equalizer | Frequency balance correction for low-volume listening | Details |
| EQ | Narrow Range | Combination of high-pass and low-pass filters | Details |
| EQ | Room EQ | FIR correction from saved room measurements | Details |
| EQ | Tilt EQ | Tilt equalizer for quick tone shaping | Details |
| EQ | Tonal Balance EQ | Automatically corrects the long-term tonal balance toward a music-style target | Details |
| EQ | Tone Control | Three-band tone control | Details |
| Lo-Fi | AM Radio Simulator | Passes music through a modeled AM broadcast and receiver chain | Details |
| Lo-Fi | Bit Crusher | Bit depth reduction and zero-order hold effect | Details |
| Lo-Fi | Cassette Artifacts | Records music onto a modeled compact cassette and plays it back through a Type I/II/IV deck with Dolby B/C | Details |
| Lo-Fi | Digital Error Emulator | Simulates various digital audio transmission errors and vintage digital equipment characteristics | Details |
| Lo-Fi | DSD64 IMD Simulator | Simulates audible intermodulation distortion from DSD64 ultrasonic noise | Details |
| Lo-Fi | FM Radio Simulator | Passes music through a physically simulated FM broadcast and receiver chain | Details |
| Lo-Fi | G.726 Simulator | Simulates an ITU-T G.726 speech-codec encode/decode round trip with an optional noisy radio link | Details |
| Lo-Fi | GSM-FR Simulator | Simulates a 13 kbit/s GSM-FR speech-codec encode/decode round trip over a radio link with frame erasure concealment | Details |
| Lo-Fi | Hum Generator | Adds controllable 50/60 Hz electrical hum ambience for vintage/lo-fi listening | Details |
| Lo-Fi | MD Simulator | Simulates a MiniDisc-era ATRAC encode and decode round trip | Details |
| Lo-Fi | MP3 Codec Simulator | Simulates a clean low-bitrate MPEG Layer III encode/decode round trip | Details |
| Lo-Fi | Noise Blender | Adds adjustable background noise texture for lo-fi ambience | Details |
| Lo-Fi | SBC Codec Simulator | Simulates a Bluetooth A2DP SBC encode/decode round trip with optional link packet loss and concealment | Details |
| Lo-Fi | Simple Jitter | Digital jitter simulation | Details |
| Lo-Fi | SW Radio Simulator | Passes music through a modeled shortwave broadcast, ionospheric path, and receiver chain | Details |
| Lo-Fi | Tape Artifacts | Records music onto a modeled reel-to-reel tape and plays it back | Details |
| Lo-Fi | TV Audio Simulator | Passes music through modeled analogue and NICAM television broadcast sound paths | Details |
| Lo-Fi | Vinyl Artifacts | Adds vinyl-style pops, crackle, hiss, rumble, and stereo noise bleed | Details |
| Lo-Fi | Vinyl Simulator | Cuts the input into a modeled groove and plays it back with a physical stylus model | Details |
| Modulation | Auto Filter | Sweeps a resonant filter with an LFO or the music's amplitude envelope | Details |
| Modulation | Auto Pan | Moves stereo-pair level smoothly across the listening field | Details |
| Modulation | Chorus | Adds moving delayed voices for chorus, ensemble, flanging, or vibrato | Details |
| Modulation | Doppler Distortion | Simulates natural, dynamic changes in sound caused by subtle speaker cone movements | Details |
| Modulation | Frequency Shifter | Translates frequencies, applies ring modulation, or creates a barber-pole shift | Details |
| Modulation | Phaser | Creates moving peaks and notches with classic or barber-pole sweeps | Details |
| Modulation | Pitch Shifter | Raises or lowers music pitch without changing tempo | Details |
| Modulation | Pitch Shifter HQ | Raises or lowers pitch with fewer phase artifacts for careful listening | Details |
| Modulation | Rotary Speaker | Combines independent horn and drum motion for a rotary-speaker effect | Details |
| Modulation | Tremolo | Volume-based modulation effect | Details |
| Modulation | Wow Flutter | Adds subtle tape or record-style pitch wavering for vintage character | Details |
| Resonator | Adaptive Prediction | Learns audio predictions to extract residuals or create evolving resonance | Details |
| Resonator | Horn Resonator | Horn resonance simulation with customizable dimensions | Details |
| Resonator | Horn Resonator Plus | Smoother horn-speaker resonance for natural listening color | Details |
| Resonator | Modal Resonator | Frequency resonance effect with up to 5 resonators | Details |
| Restoration | Click Remover | Repairs short clicks, crackles, pops, and dropouts | Details |
| Restoration | Clip Restorer | Restores peaks flattened by hard clipping | Details |
| Restoration | Hum Remover | Removes steady electrical hum and its harmonics | Details |
| Restoration | Noise Reduction | Reduces steady background noise while preserving the music | Details |
| Reverb | Dattorro Plate Reverb | Classic plate reverb based on Dattorro algorithm | Details |
| Reverb | FDN Reverb | Feedback Delay Network reverb with rich, dense reverb textures | Details |
| Reverb | IR Reverb | Convolution reverb using imported room and equipment impulse responses | Details |
| Reverb | RS Reverb | Random scattering reverb with natural diffusion | Details |
| Saturation | Bandwidth Extender | Generates high-frequency content above a detected or specified cutoff | Details |
| Saturation | Bass Extender | Generates low bass one octave below suitable bass content | Details |
| Saturation | Dynamic Saturation | Simulates the nonlinear displacement of speaker cones | Details |
| Saturation | Exciter | Add harmonic content to enhance clarity and presence | Details |
| Saturation | Hard Clipping | Digital hard clipping effect | Details |
| Saturation | Harmonic Distortion | Adds character with adjustable 2nd- to 5th-order harmonic distortion | Details |
| Saturation | Multiband Saturation | Adds warmth or edge separately to low, mid, and high ranges | Details |
| Saturation | Saturation | Adds warm analog-style richness and character | Details |
| Saturation | Sub Synth | Mixes in a filtered low-frequency signal for bass enhancement | Details |
| Saturation | Tube Simulator | Models tube line stages and push-pull or single-ended triode (300B/2A3) power amplifiers | Details |
| Spatial | Crossfeed Filter | Headphone crossfeed filter for natural stereo imaging | Details |
| Spatial | Crosstalk Cancellation | Uses in-ear measurements to reduce crosstalk between stereo speakers | Details |
| Spatial | MS Matrix | Converts between stereo and Mid/Side for center/ambience adjustments | Details |
| Spatial | Multiband Balance | 5-band frequency-dependent stereo balance control | Details |
| Spatial | Phase Select EQ | Boosts or cuts frequency components selected by L/R phase difference and Balance | Details |
| Spatial | Spatial Mapper | Separates direct, diffuse, and residual sound for flexible multichannel routing | Details |
| Spatial | Stereo Blend | Controls stereo width from polarity-swapped stereo through mono to enhanced stereo | Details |
| Others | Oscillator | Test tone and noise generator for checking speakers/headphones | Details |
| Others | SFZ Note Player | Plays an imported SFZ instrument from detected notes | Details |
| Control | Section | Groups effects so a whole section can be bypassed or restored | Details |
Frieve EffeTune has been tested and verified to work on Google Chrome. The application requires a modern browser with support for:
- Web Audio API
- Audio Worklet
- getUserMedia API
- Drag and Drop API
- Service Worker, for installable/offline web app support
-
Chrome/Chromium
- Fully supported and recommended
- Update to latest version for best performance
-
Firefox/Safari
- Limited support
- Some features such as output device selection, Wake Lock, install behavior, or audio file formats may vary by browser
- Consider using Chrome for best experience
Set EffeTune's Sample Rate to 96 kHz. This reduces audible aliasing from nonlinear effects such as saturation. This setting controls EffeTune's internal processing rate and works independently of your OS, audio interface, or virtual audio device sample rate. Check the effective Sample Rate shown in the app: until you save a setting, it may follow the OS or browser default, and the web app may fall back to another rate if 96 kHz is unavailable. If playback drops out, first disable demanding effects or shorten the chain; lower the sample rate only if needed.
Want to create your own audio plugins? Check out our Plugin Development Guide.
EffeTune's DSP engine is also an independent, deterministic MIT-licensed library for Python, JavaScript, and browser AudioWorklets. Its public Chain schema and generated effect catalog can be used without the EffeTune app. See the EffeTune DSP Library documentation.
Use the package quickstarts for installation and complete runnable examples:
The DSP Library guide covers effects, schemas, processing behavior, and required assets.