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-rw-r--r--Alc/ALu.c8
-rw-r--r--Alc/effects/echo.c2
-rw-r--r--Alc/effects/reverb.c2
-rw-r--r--OpenAL32/Include/alFilter.h2
-rw-r--r--OpenAL32/alFilter.c11
5 files changed, 6 insertions, 19 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);
}
}
diff --git a/Alc/effects/echo.c b/Alc/effects/echo.c
index a45f3398..9d17ead0 100644
--- a/Alc/effects/echo.c
+++ b/Alc/effects/echo.c
@@ -104,7 +104,7 @@ static ALvoid ALechoState_Update(ALechoState *state, ALCdevice *Device, const AL
state->FeedGain = Slot->EffectProps.Echo.Feedback;
- ALfilterState_setParams(&state->Filter, ALfilterType_LowPass,
+ ALfilterState_setParams(&state->Filter, ALfilterType_HighShelf,
1.0f - Slot->EffectProps.Echo.Damping,
(ALfloat)LOWPASSFREQREF/frequency, 0.0f);
diff --git a/Alc/effects/reverb.c b/Alc/effects/reverb.c
index 5d85ee7b..74f2368c 100644
--- a/Alc/effects/reverb.c
+++ b/Alc/effects/reverb.c
@@ -1095,7 +1095,7 @@ static ALvoid ALreverbState_Update(ALreverbState *State, ALCdevice *Device, cons
freq_scale = Slot->EffectProps.Reverb.HFReference / frequency;
else
freq_scale = (ALfloat)LOWPASSFREQREF / frequency;
- ALfilterState_setParams(&State->LpFilter, ALfilterType_LowPass,
+ ALfilterState_setParams(&State->LpFilter, ALfilterType_HighShelf,
Slot->EffectProps.Reverb.GainHF,
freq_scale, 0.0f);
diff --git a/OpenAL32/Include/alFilter.h b/OpenAL32/Include/alFilter.h
index dd5edbb9..f42747f2 100644
--- a/OpenAL32/Include/alFilter.h
+++ b/OpenAL32/Include/alFilter.h
@@ -16,8 +16,6 @@ ALfloat lpCoeffCalc(ALfloat g, ALfloat cw);
typedef enum ALfilterType {
- ALfilterType_LowPass,
-
ALfilterType_HighShelf,
ALfilterType_LowShelf,
ALfilterType_Peaking,
diff --git a/OpenAL32/alFilter.c b/OpenAL32/alFilter.c
index 550c99f5..5bef87fd 100644
--- a/OpenAL32/alFilter.c
+++ b/OpenAL32/alFilter.c
@@ -343,17 +343,6 @@ void ALfilterState_setParams(ALfilterState *filter, ALfilterType type, ALfloat g
/* Calculate filter coefficients depending on filter type */
switch(type)
{
- case ALfilterType_LowPass:
- alpha = sinf(w0) / 2.0f * sqrtf((gain + 1.0f/gain) *
- (1.0f/0.75f - 1.0f) + 2.0f);
- filter->b[0] = (1.0f - cosf(w0)) * 0.5f;
- filter->b[1] = 1.0f - cosf(w0);
- filter->b[2] = (1.0f - cosf(w0)) * 0.5f;
- filter->a[0] = 1.0f + alpha;
- filter->a[1] = -2.0f*cosf(w0);
- filter->a[2] = 1.0f - alpha;
- break;
-
case ALfilterType_HighShelf:
alpha = sinf(w0) / 2.0f * sqrtf((gain + 1.0f/gain) *
(1.0f/0.75f - 1.0f) + 2.0f);