Create band router
create_band_routerSplit an audio signal into EQ bands and route each band's level to specific parameters, enabling frequency-based audio control such as mapping bass to one parameter and highs to another.
Instructions
Split an audio signal into EQ bands and route each band to its own target parameter(s) — the musician-friendly 'bass -> this, highs -> that' patch. Builds a container with: a Select CHOP isolating the source audio by absolute path (no cross-container wire), N audiofilterCHOP band-pass slices tiling the spectrum in log-frequency space (the same audioFilter idiom extract_audio_features uses), an Analyze CHOP per band measuring its level via rmspower, a Merge + Lag smoothing the per-band envelope (release in seconds), and a Null 'bands_out' carrying one channel per band named band0..bandN-1 (band0 = lowest). Each target route binds a band's smoothed level to a parameter by expression (op('')['band'] * scale + offset). The bands_out Null is also directly bind_to_channel-able for routes you add later. EXTENSION sibling of extract_audio_features (that one extracts named features; this one is the band-split + multi-target router). NOTE: the analyze 'rmspower' function value and the channel-rename pars are UNVERIFIED across TD builds — they are set in guarded tries with fallbacks (abs envelope / upstream channel names), and a single audiospectrumCHOP is the fallback if audiofilterCHOP is unavailable; per-item failures surface as warnings rather than failing the build.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| name | No | Base name for the container COMP that holds the EQ split + router. | band_router |
| bands | No | Number of EQ bands to split the signal into (e.g. 4 = sub / low / mid / high). The output Null carries one channel per band, named band0..bandN-1 (band0 = lowest). | |
| smooth | No | Release/lag time in seconds applied to every band level — smooths the per-band envelope so reactivity follows a clean curve instead of flickering on raw audio (e.g. 0.05 punchy, 0.2 smooth). | |
| targets | No | Optional band->parameter routes. Each binds one band's smoothed level to a parameter by expression (op('<bands_out>')['band<i>'] * scale + offset). Omit to just build the split (bind later with bind_to_channel against the bands_out Null). | |
| parent_path | No | Where to build the band-router container (a COMP path, e.g. '/project1'). | /project1 |
| source_chop | Yes | Path of the raw audio CHOP to split (e.g. an Audio Device In or Audio File In, '/project1/audiodevin1'). REQUIRED. |