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Use a 16-sample base delay for the B-Format decoder IRs

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This commit is contained in:
Chris Robinson 2019-06-04 20:27:32 -07:00
parent 9d861406c0
commit b2735331c0
1 changed files with 5 additions and 5 deletions
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10
Alc/hrtf.cpp
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@ -332,10 +332,10 @@ void BuildBFormatHrtf(const HrtfEntry *Hrtf, DirectHrtfState *state, const ALsiz
}; };
std::transform(AmbiPoints, AmbiPoints+AmbiCount, idx.begin(), calc_idxs); std::transform(AmbiPoints, AmbiPoints+AmbiCount, idx.begin(), calc_idxs);
/* For dual-band processing, add a 12-sample delay to compensate for the HF /* For dual-band processing, add a 16-sample delay to compensate for the HF
* scale on the minimum-phase response. * scale on the minimum-phase response.
*/ */
static constexpr ALsizei base_delay{DualBand ? 12 : 0}; static constexpr ALsizei base_delay{DualBand ? 16 : 0};
const ALdouble xover_norm{400.0 / Hrtf->sampleRate}; const ALdouble xover_norm{400.0 / Hrtf->sampleRate};
BandSplitterR<double> splitter{xover_norm}; BandSplitterR<double> splitter{xover_norm};
@ -435,10 +435,10 @@ void BuildBFormatHrtf(const HrtfEntry *Hrtf, DirectHrtfState *state, const ALsiz
tmpres.clear(); tmpres.clear();
ALsizei max_length{HRIR_LENGTH}; ALsizei max_length{HRIR_LENGTH};
/* Increase the IR size by 24 samples with dual-band processing to account /* Increase the IR size by double the base delay with dual-band processing
* for the head and tail from the HF response scale. * to account for the head and tail from the HF response scale.
*/ */
const ALsizei irsize{DualBand ? mini(Hrtf->irSize + base_delay*2, max_length) : Hrtf->irSize}; const ALsizei irsize{mini(Hrtf->irSize + base_delay*2, max_length)};
max_length = mini(max_delay-min_delay + irsize, max_length); max_length = mini(max_delay-min_delay + irsize, max_length);
/* Round up to the next IR size multiple. */ /* Round up to the next IR size multiple. */