Purpose

Stem Recorder captures a multi-channel bus to disk as separate WAV files, one per stem, all sample-aligned to each other. Stemwidth decides whether each channel becomes its own mono file or each pair becomes a stereo file. Jam in Voro, then polish the stems in a DAW; it also captures per-speaker feeds for spatial work. The signal passes through untouched.

Use

Place it on the multi-channel bus you want to split, for example the output of a mixer with stems laid out across channels. Set Filepath as the base path, pick Stemwidth, and toggle Record to capture. Because out is a transparent passthrough, it can live permanently inline and be armed whenever a take is worth keeping.

Inputs and outputs

• Input 0: audio is the signal to record. Mono, stereo, or multi-channel up to 64 channels. Required.
• Output 0: out passes the input through unchanged.

Controls

• Filepath: base path for the stem files. One WAV is written per stem.
• Stemwidth: Mono writes one file per channel, Stereo one file per channel pair.
• Record: toggles capture. On starts fresh files; off stops and finalizes them.
• Maxseconds: safety cap on recording length, up to 7200 seconds. Capture stops at this limit even if Record stays on.

Notes

• All stems start and stop together and are sample-aligned, so they drop into a DAW session in phase.
• Writing happens on a separate writer thread through a non-blocking ring; recording does not interrupt playback.
• Let Record turn off before opening the files elsewhere, so they are finalized.

Ports

Inputs

• audio row required
  audio_pcm_f32_mono_v1audio_pcm_f32_stereo_v1audio_pcm_f32_multi_v1

Outputs

• out row
  mirror_input

Parameters

Filepath (Filepath) Str op('stem_recorder').par.Filepath

Default:

"" (Empty String)

Stemwidth (Stemwidth) Menu op('stem_recorder').par.Stemwidth

Default:

Mono

Options:

Mono, Stereo

Record (Record) Toggle op('stem_recorder').par.Record

Default:

Off

Options:

Off, On

Maxseconds (Maxseconds) Int op('stem_recorder').par.Maxseconds

Default:

600

Range:

1 to 7200