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Disable the LPC mode highpass filter when set to APPLICATION_AUDIO.

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This commit is contained in:
Gregory Maxwell 2011-08-26 15:01:10 -04:00
parent 073c4e1472
commit 6db1d526b4
2 changed files with 11 additions and 4 deletions
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8
silk/silk_enc_API.c
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@ -302,9 +302,11 @@ opus_int silk_Encode(
}
}
/* High-pass filter */
psEnc->state_Fxx[ 0 ].sCmn.HP_cutoff_Hz = encControl->HP_cutoff_Hz;
silk_HP_variable_cutoff( psEnc->state_Fxx, psEnc->nChannelsInternal );
/* High-pass filter, deactivated if less than zero */
if(encControl->HP_cutoff_Hz>=0) {
psEnc->state_Fxx[ 0 ].sCmn.HP_cutoff_Hz = encControl->HP_cutoff_Hz;
silk_HP_variable_cutoff( psEnc->state_Fxx, psEnc->nChannelsInternal );
}
/* Total target bits for packet */
nBits = SKP_DIV32_16( SKP_MUL( encControl->bitRate, encControl->payloadSize_ms ), 1000 );

7
src/opus_encoder.c
View file

@ -326,7 +326,10 @@ int opus_encode_float(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
/* Mode selection depending on application and signal type */
if (st->application==OPUS_APPLICATION_VOIP)
{
opus_int32 threshold = 20000;
opus_int32 threshold;
threshold = 20000;
/* OPUS_APPLICATION_VOIP default to auto high-pass */
st->silk_mode.HP_cutoff_Hz=0;
/* Hysteresis */
if (st->prev_mode == MODE_CELT_ONLY)
threshold -= 4000;
@ -342,6 +345,8 @@ int opus_encode_float(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
opus_int32 threshold;
/* SILK/CELT threshold is higher for voice than for music */
threshold = 36000;
/* OPUS_APPLICATION_AUDIO disables the high-pass */
st->silk_mode.HP_cutoff_Hz=-1;
if (st->signal_type == OPUS_SIGNAL_MUSIC)
threshold -= 20000;
else if (st->signal_type == OPUS_SIGNAL_VOICE)