Create band router
create_band_routerSplit an audio signal into EQ bands and route each band's smoothed level to target parameters, enabling frequency-based control of effects.
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. |