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hub / github.com/Edzelf/ESP32-Radio / R4Core

Function R4Core

lib/codecs/src/aac_decoder.cpp:3091–3185  ·  view source on GitHub ↗

* Function: R4Core * * Description: radix-4 pass for decimation-in-time FFT * * Inputs: buffer of samples * number of R4 butterflies per group * number of R4 groups per pass * pointer to twiddle factors tables * * Outputs: processed samples in same buffer * * Return: none * * Notes: gain 2 integer bits per pass (see scaling

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Callers 1

R4FFTFunction · 0.85

Calls 1

MULSHIFT32Function · 0.70

Tested by

no test coverage detected