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authorChris Robinson <[email protected]>2013-05-28 10:57:38 -0700
committerChris Robinson <[email protected]>2013-05-28 10:57:38 -0700
commit48aa1e10d64d7c62cab856a0c5d7f9e140efbd6b (patch)
tree737726d31ce2cee1b548108c41493c3b2451d57f /Alc/ALu.c
parent6556626055e9985251ebd782c8551839e6d67ac5 (diff)
Use the high-shelf filter in place of low-pass
They effectively both work to lower (or raise) high frequencies. However, the high-shelf performs better when gain=1.
Diffstat (limited to 'Alc/ALu.c')
-rw-r--r--Alc/ALu.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/Alc/ALu.c b/Alc/ALu.c
index 57dfa30f..c05fb48c 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -455,7 +455,7 @@ ALvoid CalcNonAttnSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
ALfloat gain = maxf(0.001f, sqrtf(DryGainHF));
for(c = 0;c < num_channels;c++)
ALfilterState_setParams(&ALSource->Params.Direct.Filter[c],
- ALfilterType_LowPass, gain,
+ ALfilterType_HighShelf, gain,
(ALfloat)LOWPASSFREQREF/Frequency, 0.0f);
}
for(i = 0;i < NumSends;i++)
@@ -463,7 +463,7 @@ ALvoid CalcNonAttnSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
ALfloat gain = maxf(0.001f, sqrtf(WetGainHF[i]));
for(c = 0;c < num_channels;c++)
ALfilterState_setParams(&ALSource->Params.Send[i].Filter[c],
- ALfilterType_LowPass, gain,
+ ALfilterType_HighShelf, gain,
(ALfloat)LOWPASSFREQREF/Frequency, 0.0f);
}
}
@@ -904,14 +904,14 @@ ALvoid CalcSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
{
ALfloat gain = maxf(0.001f, sqrtf(DryGainHF));
ALfilterState_setParams(&ALSource->Params.Direct.Filter[0],
- ALfilterType_LowPass, gain,
+ ALfilterType_HighShelf, gain,
(ALfloat)LOWPASSFREQREF/Frequency, 0.0f);
}
for(i = 0;i < NumSends;i++)
{
ALfloat gain = maxf(0.001f, sqrtf(WetGainHF[i]));
ALfilterState_setParams(&ALSource->Params.Send[i].Filter[0],
- ALfilterType_LowPass, gain,
+ ALfilterType_HighShelf, gain,
(ALfloat)LOWPASSFREQREF/Frequency, 0.0f);
}
}