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    Searched refs:noise_floor (Results 1 - 3 of 3) 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/libopus/celt/
celt_encoder.c	898 VARDECL(opus_val16, noise_floor); 901 ALLOC(noise_floor, C*nbEBands, opus_val16); 910 noise_floor[i] = MULT16_16(QCONST16(0.0625f, DB_SHIFT),logN[i]) 917 maxDepth = MAX16(maxDepth, bandLogE[c*nbEBands+i]-noise_floor[i]); 938 follower[c*nbEBands+i] = MAX16(follower[c*nbEBands+i], noise_floor[i]);     [all...]
/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]);     [all...]

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