Searched defs:gain_floor (Results 1 - 1 of 1) sorted by relevance

/external/speex/libspeex/
H A Dpreprocess.c209 spx_word16_t *gain_floor; /**< Minimum gain allowed */ member in struct:SpeexPreprocessState_
321 static void compute_gain_floor(int noise_suppress, int effective_echo_suppress, spx_word32_t *noise, spx_word32_t *echo, spx_word16_t *gain_floor, int len) argument
331 /* gain_floor = sqrt [ (noise*noise_floor + echo*echo_floor) / (noise+echo) ] */
333 gain_floor[i] = MULT16_16_Q15(noise_gain,
341 /* gain_floor = sqrt [ (noise*noise_floor + echo*echo_floor) / (noise+echo) ] */
343 gain_floor[i] = MULT16_16_Q15(echo_gain,
380 static void compute_gain_floor(int noise_suppress, int effective_echo_suppress, spx_word32_t *noise, spx_word32_t *echo, spx_word16_t *gain_floor, int len) argument
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]);
462 st->gain_floor = (spx_word16_t*)speex_alloc((N+M)*sizeof(spx_word16_t));
539 speex_free(st->gain_floor);
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