Searched refs:echo_floor (Results 1 - 1 of 1) sorted by relevance

/external/speex/libspeex/
H A Dpreprocess.c331 /* gain_floor = sqrt [ (noise*noise_floor + echo*echo_floor) / (noise+echo) ] */
341 /* gain_floor = sqrt [ (noise*noise_floor + echo*echo_floor) / (noise+echo) ] */
383 float echo_floor; local
387 echo_floor = exp(.2302585f*effective_echo_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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