STFT freeze framer: turns an arbitrary-length input stream into hop-spaced analysis frames, drives a SpectralStack (capture on a Freeze rising edge, render every hop), and overlap-adds the synthesized frames back into an arbitrary-length output stream.
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STFT freeze framer: turns an arbitrary-length input stream into hop-spaced analysis frames, drives a SpectralStack (capture on a Freeze rising edge, render every hop), and overlap-adds the synthesized frames back into an arbitrary-length output stream.
Owns no GPU state itself — the SpectralStack does — so it runs unchanged inline (CPU engine) or on the transport worker (GPU engine).
NOTE (SF-4): this deliberately does NOT delegate its WOLA to signal::SpectralFrameEngine. The engine owns both the analysis AND synthesis FFTs and normalizes the spectral→time synthesis it performs on the CPU. This framer instead hands the SpectralStack windowed time-domain frames and receives finished time-domain frames back — because the whole point of GpuSpectralStack is to run advance + smear + weighted-sum + the inverse FFT in ONE on-device submit and read back a completed frame. Routing through the engine would force either a redundant second FFT per hop or move synthesis off the GPU, defeating that batching. The framer's own COLA normalization is valid for the COLA window/hop configs it accepts (it rejects non-dividing hops up front rather than producing wrong output), so the consolidation is intentionally scoped to the jitter contract and the shared device, not the framing math.
1.15.0