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    Searched defs:noise_floor (Results 1 - 2 of 2) sorted by null

  /external/libopus/src/
analysis.c 222 float noise_floor; local
384 noise_floor = 5.7e-4f/(1<<(IMAX(0,lsb_depth-8)));
386 noise_floor *= 1<<(15+SIG_SHIFT);
388 noise_floor *= noise_floor;
413 if (E>.1*bandwidth_mask && E*1e9f > maxE && E > noise_floor*(band_end-band_start))
  /external/speex/libspeex/
preprocess.c 331 /* gain_floor = sqrt [ (noise*noise_floor + echo*echo_floor) / (noise+echo) ] */
341 /* gain_floor = sqrt [ (noise*noise_floor + echo*echo_floor) / (noise+echo) ] */
384 float noise_floor; local
386 noise_floor = exp(.2302585f*noise_suppress);
391 gain_floor[i] = FRAC_SCALING*sqrt(noise_floor*PSHR32(noise[i],NOISE_SHIFT) + echo_floor*echo[i])/sqrt(1+PSHR32(noise[i],NOISE_SHIFT) + echo[i]);
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