Built the throwaway prototype and sorb tested it: keyboard gone, voice natural,
at 35 percent rather than the 100 percent the spec assumed as default. That
settles the control question — the package exposes setSuppressionLevel and the
wasm carries atten_lim, so DeepFilterNet limits attenuation natively and the
spec's dry/wet mix drops out entirely, taking its missing delay node and phase
problem with it.
Measured what the spec had guessed: 23.27 MB per client, an order of magnitude
above RNNoise. Also found that the package fetches model and wasm from a
third-party CDN at call time, which a self-hosted platform cannot accept — the
asset URL is configurable and the prototype already serves them locally, so that
path is proven rather than assumed.
Still open and decision-relevant: CPU figures, the phone, and the standing cost of
carrying this through every upstream rebase.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Thore CimbalandClaude Opus 4.8
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