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Use a flat sqrt(2) scale for non-directional ambient gains

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Chris Robinson
2017-01-21 11:54:22 -08:00
parent 371fda1803
commit 7025660e8b
1 changed files with 3 additions and 8 deletions
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Alc/panning.c
+3 -8
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@@ -214,12 +214,7 @@ void ComputeAmbientGainsMC(const ChannelConfig *chancoeffs, ALsizei numchans, AL
ALsizei i;
for(i = 0;i < numchans;i++)
{
// The W coefficients are based on a mathematical average of the
// output. The square root of the base average provides for a more
// perceptual average volume, better suited to non-directional gains.
gains[i] = sqrtf(chancoeffs[i][0]) * ingain;
}
gains[i] = chancoeffs[i][0] * 1.414213562f * ingain;
for(;i < MAX_OUTPUT_CHANNELS;i++)
gains[i] = 0.0f;
}
@@ -465,8 +460,8 @@ static bool MakeSpeakerMap(ALCdevice *device, const AmbDecConf *conf, ALuint spe
static const ChannelMap MonoCfg[1] = {
{ FrontCenter, { 1.0f } },
}, StereoCfg[2] = {
{ FrontLeft, { 5.00000000e-1f, 2.88675135e-1f, 0.0f, 0.0f } },
{ FrontRight, { 5.00000000e-1f, -2.88675135e-1f, 0.0f, 0.0f } },
{ FrontLeft, { 5.00000000e-1f, 2.88675135e-1f, 0.0f, 0.00000000e+0f } },
{ FrontRight, { 5.00000000e-1f, -2.88675135e-1f, 0.0f, 0.00000000e+0f } },
}, QuadCfg[4] = {
{ BackLeft, { 3.53553391e-1f, 2.04124145e-1f, 0.0f, -2.04124145e-1f } },
{ FrontLeft, { 3.53553391e-1f, 2.04124145e-1f, 0.0f, 2.04124145e-1f } },