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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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7
src/opus_encoder.c
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@ -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)