An Interpretable, Controllable Time-Varying IIR Denoiser for On-Device Assistive Hearing
We present TVBC (Time-Varying Biquad Cascade), an interpretable, low-latency speech enhancement model for real-time, on-device assistive hearing. A lightweight neural controller predicts, in real time, the coefficients of a differentiable cascade of 35 second-order IIR filters (biquads), so the model tracks non-stationary noise while keeping a fully interpretable processing chain: every spectral modification is an explicit, adjustable equalizer curve rather than an opaque `black-box' transform. Because the biquad cascade carries the signal processing, the controller can be made very small, driving the cascade with only 24k parameters at a 10.7ms algorithmic latency, within hearing-aid bud...
| Authors | Riccardo Rota, Kiril Ratmanski, Jozef Coldenhoff et al. |
|---|---|
| Primary category | cs.SD |
| Published | 3 March 2026 |
| Last updated at source | 21 September 2026 |
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