Stereo to Dual Mono Channel Splitter
Copies the first and second decoded channels into separate mono buffers. The left and right downloads retain their original sample order and use 48 kHz PCM16 WAV encoding.
About this stereo to dual mono channel splitter
Stereo to Dual Mono Channel Splitter — browser-based utility.
How this tool works
Copies the first and second decoded channels into separate mono buffers. The left and right downloads retain their original sample order and use 48 kHz PCM16 WAV encoding.
- Download the example file and select it in the file input.
- Click “Process locally”.
- Download the result and inspect: left-channel.wav + right-channel.wav — PCM16; 48000 Hz; 1 channel each; 72000 frames each; 440 / 660 Hz
Worked example
Scenario: Example file: /examples/audio-stereo.wav; Download the example file and select it in the file input. Click “Process locally”. Download the result and inspect: left-channel.wav + right-channel.wav — PCM16; 48000 Hz; 1 channel each; 72000 frames each; 440 / 660 Hz
Sample input:
Illustrative output:
Limits and verification
A mono input is rejected. For a multichannel input only the first two channels are extracted; other channels are not included. Splitting does not isolate instruments mixed within a channel.
Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.
Browser processing boundary
Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.
Relevant references
These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.
- W3C Web Audio API 1.0 — browser decoding and offline rendering
- Microsoft RIFF/WAVE PCM and WAVEFORMATEXTENSIBLE
Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology
How to use it
- Download the example file and select it in the file input.
- Click “Process locally”.
- Download the result and inspect: left-channel.wav + right-channel.wav — PCM16; 48000 Hz; 1 channel each; 72000 frames each; 440 / 660 Hz
Frequently asked questions
How does Stereo to Dual Mono Channel Splitter process the signal or file?+
Copies the first and second decoded channels into separate mono buffers. The left and right downloads retain their original sample order and use 48 kHz PCM16 WAV encoding.
How can I reproduce the Stereo to Dual Mono Channel Splitter example?+
Example file: /examples/audio-stereo.wav; Download the example file and select it in the file input. Click “Process locally”. Download the result and inspect: left-channel.wav + right-channel.wav — PCM16; 48000 Hz; 1 channel each; 72000 frames each; 440 / 660 Hz
What limits apply to Stereo to Dual Mono Channel Splitter?+
A mono input is rejected, and an incomplete declared RIFF/WAVE envelope is refused before channel decoding. For multichannel audio only the first two channels are extracted; splitting does not isolate instruments mixed within a channel.
What does browser-isolation evidence establish for stereo splitting?+
Network requests observed during the example contained no selected-audio payload while the fixture produced two mono WAVs and FFmpeg decoded the 440 Hz left and 660 Hz right channels. This proves the tested browser value path, not source separation within a mixed channel or every resource and extension environment.