audio recording // continuous history

Polarity-Recorder

Record audio continuously. Save it when you need it.

Polarity-Recorder keeps the most recent 1 to 20 minutes of audio. Use the waveform to select, edit, listen to, and export a WAV file.

Current version: v0.2.0. Page updated: 2026-08-28.

What’s new:

  • Reduced editor CPU use with adaptive redraws, waveform caching, and batched rendering.
  • Improved compatibility with older x86_64 CPUs; public builds no longer require AVX2, FMA, or BMI2.
  • Improved standalone audio-input compatibility with native device formats and sample rates.
  • Standalone input-device choices now remain selected even if a device cannot open.
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Record, edit, and export audio

Free download No account No telemetry Win / macOS / Linux CLAP / VST3 AUv2 on macOS Standalone

Continuous History

1 / 2 / 5 / 10 / 20 minutes

Polarity-Recorder writes incoming audio to a ring buffer. Select a history length from 1 to 20 minutes. Use record hold to stop changes to the buffer.

History View Hold

Inspect without losing your place

Hover over the source pane to hold its displayed viewport while recording continues. Leave the pane to return smoothly to the live history.

Frequency Colors

Low, mid, and high frequencies

Enable COLOR to tint bass red, mid frequencies teal, and high frequencies pale blue. It is off by default so timeline markers stay prominent.

Host Markers

Transport, bars, and beats

The history shows sample-aligned play-start, bar-start, and beat markers. Selection edges prefer bar and beat boundaries, and near-exact bar ranges are corrected to prevent loop drift. Hold Ctrl to move freely.

Musical Editor Grid

Host tempo, meter, and snapping

The preview and editor show bars, quarter notes, eighth notes, and sixteenth notes as zoom allows. Follow the host or set BPM and meter manually. Switch to TIME for a seconds-based grid.

Two-Stage Editor

History, preview, and owned edit

Select audio in the current history. The lower waveform shows a preview. Copy the selection to an owned editor clip before you use destructive edit commands.

Drag and Save WAV

Export the selected audio

On Windows and macOS, drag a history or editor selection to a compatible DAW, plug-in, or file manager. On all platforms, use SAVE to export the current selection.

Structured Clip Names

Project, type, form, tempo, and key

Set clip metadata in the editor. SAVE and DRAG WAV use it to create readable filenames with the project, sample type, form, BPM, key, scale, and take.

Clip Browser

Search and manage exported files

Search across titles and structured metadata. Preview or drag a clip directly, then use its menu to load, rename, or delete the WAV file.

Audio Editing

Clipboard, timing, fades, and level

Copy, cut, paste, silence, delete, crop, reverse, trim, rotate, or wrap a range. Add fades, adjust gain, normalize to peak or integrated LUFS, and optionally hard-clip the result.

Undo and Redo

Move through the edit history

Every destructive audio edit is undoable with the controls or standard keyboard shortcuts. Exported files and clipboard-only actions stay outside the edit history.

Listen and Loop

Audition from a chosen marker

Place the start marker with a click, then play the lower clip with optional looping. SYNC starts from the same marker when the host begins playback.

WAV Import

Load an external WAV file

Drop a mono or stereo WAV file on the editor. The editor loads the audio into memory and keeps the source path. SAVE FILE replaces the source only after confirmation.

Audio Passthrough

No audio change during recording

When audition is off, the plug-in sends the input to the output without changes. It supports mono and stereo buses.

Real-Time Safety

Safe audio-thread operation

The audio thread does not allocate memory, use locks, write logs, or access files. Other tasks run on a background task lane.

Downloads

Select your operating system. Each package contains the available plug-in formats and a standalone application.

  • Windows: Start the installer. Select Install for all users. This installs CLAP and VST3 in the standard system folders. See the Windows install guide.
  • macOS: The universal package contains AUv2, CLAP, and VST3. See the macOS install guide if macOS shows a security warning.
  • Linux: Extract the archive. Use install.sh to install for one user or for all users. See the Linux install guide.
  • File drag: Native file drag is available on Windows and macOS. Use SAVE on Linux.

Basic workflow

01

Record

Add Polarity-Recorder to the audio chain. It keeps the newest audio for the selected history length.

02

Select

Hold or zoom the history view. Use frequency colors, host markers, and musical duration feedback to select the audio.

03

Edit

Copy the selection to the editor. Use the musical grid and edit commands, set the clip metadata, and listen to the result.

04

Export

Save the selection or drag it to a compatible target. Use the clip browser to reopen a clearly named export.

Tech specs

History

1, 2, 5, 10, or 20 minutes

Platforms

Windows x86_64, macOS Universal, Linux x86_64

Formats

CLAP, VST3, LV2, AUv2 on macOS, standalone

Audio

Mono and stereo, transparent passthrough, WAV export

State

The editor clip and its naming metadata remain available after you close and open the UI. The DAW project does not contain the recorded audio.

Availability

Free download. Source code is not publicly available.