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ffmpeg.wasm-core
Commit 7ea9c4a9 authored by Michael Niedermayer's avatar Michael Niedermayer
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Merge commit '149438cf' 

* commit '149438cf':
  dca: improve default stereo downmix coefficients.
Merged-by: 's avatarMichael Niedermayer <michaelni@gmx.at>
parents 12235a3e 149438cf
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libavcodec/dcadata.h
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...@@ -7552,16 +7552,16 @@ static const float dca_dmixtable[241] = { ...@@ -7552,16 +7552,16 @@ static const float dca_dmixtable[241] = {
}; };
static const float dca_default_coeffs[10][5][2] = { static const float dca_default_coeffs[10][5][2] = {
{ { 0.707946, 0.707946 }, }, // A { { 0.707107, 0.707107 }, }, // A
{ { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // A + B (dual mono) { { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // A + B (dual mono)
{ { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // L + R (stereo) { { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // L + R (stereo)
{ { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // (L+R) + (L-R) (sum-difference) { { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // (L+R) + (L-R) (sum-difference)
{ { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // LT + RT (left and right total) { { 1.000000, 0.000000 }, { 0.000000, 1.000000 }, }, // LT + RT (left and right total)
{ { 0.865964, 0.865964 }, { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, }, // C + L + R { { 0.501187, 0.501187 }, { 0.707107, 0.000000 }, { 0.000000, 0.707107 }, }, // C + L + R
{ { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 0.707946, 0.707946 }, }, // L + R + S { { 0.707107, 0.000000 }, { 0.000000, 0.707107 }, { 0.501187, 0.501187 }, }, // L + R + S
{ { 0.865964, 0.865964 }, { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 0.707946, 0.707946 }, }, // C + L + R + S { { 0.501187, 0.501187 }, { 0.707107, 0.000000 }, { 0.000000, 0.707107 }, { 0.501187, 0.501187 }, }, // C + L + R + S
{ { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 1.000000, 0.707946 }, { 0.707946, 1.000000 }, }, // L + R + SL + SR { { 0.707107, 0.000000 }, { 0.000000, 0.707107 }, { 0.501187, 0.000000 }, { 0.000000, 0.501187 }, }, // L + R + SL + SR
{ { 0.865964, 0.865964 }, { 1.000000, 0.501187 }, { 0.501187, 1.000000 }, { 1.000000, 0.707946 }, { 0.707946, 1.000000 }, }, // C + L + R + SL + SR { { 0.501187, 0.501187 }, { 0.707107, 0.000000 }, { 0.000000, 0.707107 }, { 0.501187, 0.000000 }, { 0.000000, 0.501187 }, }, // C + L + R + SL + SR
}; };
/* downmix coeffs /* downmix coeffs
......
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