diff options
Diffstat (limited to 'celt')
| -rw-r--r-- | celt/celt_decoder.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/celt/celt_decoder.c b/celt/celt_decoder.c index bda317e4..b688f2a4 100644 --- a/celt/celt_decoder.c +++ b/celt/celt_decoder.c @@ -1030,10 +1030,18 @@ int celt_decode_with_ec(CELTDecoder * OPUS_RESTRICT st, const unsigned char *dat /* In case start or end were to change */ if (!isTransient) { + opus_val16 max_background_increase; OPUS_COPY(oldLogE2, oldLogE, 2*nbEBands); OPUS_COPY(oldLogE, oldBandE, 2*nbEBands); + /* In normal circumstances, we only allow the noise floor to increase by + up to 2.4 dB/second, but when we're in DTX, we allow up to 6 dB + increase for each update.*/ + if (st->loss_count < 10) + max_background_increase = M*QCONST16(0.001f,DB_SHIFT); + else + max_background_increase = QCONST16(1.f,DB_SHIFT); for (i=0;i<2*nbEBands;i++) - backgroundLogE[i] = MIN16(backgroundLogE[i] + M*QCONST16(0.001f,DB_SHIFT), oldBandE[i]); + backgroundLogE[i] = MIN16(backgroundLogE[i] + max_background_increase, oldBandE[i]); } else { for (i=0;i<2*nbEBands;i++) oldLogE[i] = MIN16(oldLogE[i], oldBandE[i]); |