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exhale
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near-mono tuning

This commit is contained in:
Christian R. Helmrich 2021-05-08 18:00:00 +02:00
parent aaf8b0aa5a
commit 08ac873cef
1 changed files with 3 additions and 4 deletions
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7
src/lib/exhaleEnc.cpp
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@ -773,7 +773,6 @@ unsigned ExhaleEncoder::psychBitAllocation () // perceptual bit-allocation via s
: scaleSr - eightTimesSqrt256Minus[256 - m_bitRateMode] - __min (3, (m_bitRateMode - 1) >> 1)) + scaleSBR;
uint32_t* sfbStepSizes = (uint32_t*) m_tempIntBuf;
uint8_t meanSpecFlat[USAC_MAX_NUM_CHANNELS];
//uint8_t meanTempFlat[USAC_MAX_NUM_CHANNELS];
unsigned ci = 0, s; // running index
unsigned errorValue = 0; // no error
@ -826,9 +825,9 @@ unsigned ExhaleEncoder::psychBitAllocation () // perceptual bit-allocation via s
{
const int16_t chanCorrSign = (coreConfig.stereoConfig & 2 ? -1 : 1);
const uint16_t nSamplesMax = (useMaxBandwidth ? nSamplesInFrame : swbOffsetsL[m_swbTableIdx][__min (m_numSwbLong, maxSfbLong + 1)]);
const uint8_t steppFadeLen = (eightShorts0 ? 4 : (coreConfig.tnsActive ? 32 : 64));
const uint8_t steppFadeLen = (eightShorts0 ? 4 : (coreConfig.tnsActive && (m_bitRateMode > 0) ? 32 : 64));
const uint8_t steppFadeOff = ((m_bitRateMode + 77000 / samplingRate) & 6) << (eightShorts0 ? 2 : 5);
const int64_t steppWeightI = __min (64, m_perCorrHCurr[el] - 128) >> (eightShorts0 || coreConfig.tnsActive ? 1 : 0);
const int64_t steppWeightI = __min (64, m_perCorrHCurr[el] - 128) >> (eightShorts0 || (coreConfig.tnsActive && (m_bitRateMode > 0)) ? 1 : 0);
const int64_t steppWeightD = 128 - steppWeightI; // decrement, (1 - crosstalk) * 128
for (uint16_t n = 0, gr = 0; gr < coreConfig.groupingData[0].numWindowGroups; gr++)
@ -1418,7 +1417,7 @@ unsigned ExhaleEncoder::spectralProcessing () // complete ics_info(), calc TNS
if ((int) s == steAnaStats * -1) coreConfig.stereoConfig = 2; // 2: S>M, pred_dir=1
if (s > (UCHAR_MAX * (6u + m_shiftValSBR)) / 8) coreConfig.stereoMode = 2; // 2: all
if (s >= UCHAR_MAX - 1) coreConfig.stereoConfig |= 8; // true: mono-in-stereo signal
if (s >= UCHAR_MAX - 2u + (meanSpecFlat >> 6)) coreConfig.stereoConfig |= 8; // mono
}
else if (nrChannels > 1) m_perCorrHCurr[el] = m_perCorrLCurr[el] = 128; // "mid" value