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  /external/webrtc/src/modules/audio_processing/ns/
ns_core.c 240 void WebRtcNs_NoiseEstimation(NSinst_t* inst, float* magn, float* noise) {
249 lmagn[i] = (float)log(magn[i]);
606 //magn is the input magnitude spectrum
737 float magn[HALF_ANAL_BLOCKL], noise[HALF_ANAL_BLOCKL]; local
869 magn[0] = (float)(fabs(real[0]) + 1.0f);
872 magn[inst->magnLen - 1] = (float)(fabs(real[inst->magnLen - 1]) + 1.0f)
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nsx_core.h 173 uint16_t* magn,
nsx_core_neon.c 96 uint16_t* magn,
118 // lmagn(i)=log(magn(i))=log(2)*log2(magn(i))
119 // magn is in Q(-stages), and the real lmagn values are:
120 // real_lmagn(i)=log(magn(i)*2^stages)=log(magn(i))+log(2^stages)
123 if (magn[i]) {
124 zeros = WebRtcSpl_NormU32((uint32_t)magn[i]);
125 frac = (int16_t)((((uint32_t)magn[i] << zeros)
128 // log2(magn(i)
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nsx_core.c 472 uint16_t* magn,
492 // lmagn(i)=log(magn(i))=log(2)*log2(magn(i))
493 // magn is in Q(-stages), and the real lmagn values are:
494 // real_lmagn(i)=log(magn(i)*2^stages)=log(magn(i))+log(2^stages)
497 if (magn[i]) {
498 zeros = WebRtcSpl_NormU32((WebRtc_UWord32)magn[i]);
499 frac = (WebRtc_Word16)((((WebRtc_UWord32)magn[i] << zeros)
501 // log2(magn(i)
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