diff options
Diffstat (limited to 'OpenAL32/alFilter.c')
| -rw-r--r-- | OpenAL32/alFilter.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/OpenAL32/alFilter.c b/OpenAL32/alFilter.c index 7fb6a5e9..fd10addc 100644 --- a/OpenAL32/alFilter.c +++ b/OpenAL32/alFilter.c @@ -405,6 +405,15 @@ void ALfilterState_setParams(ALfilterState *filter, ALfilterType type, ALfloat g filter->a[1] = -2.0f * cosf(w0); filter->a[2] = 1.0f - alpha; break; + case ALfilterType_HighPass: + alpha = sinf(w0) * sinhf(logf(2.0f) / 2.0f * bandwidth * w0 / sinf(w0)); + filter->b[0] = (1.0f + cosf(w0)) / 2.0f; + filter->b[1] = 1.0f + cosf(w0); + filter->b[2] = (1.0f + cosf(w0)) / 2.0f; + filter->a[0] = 1.0f + alpha; + filter->a[1] = -2.0f * cosf(w0); + filter->a[2] = 1.0f - alpha; + break; case ALfilterType_BandPass: alpha = sinf(w0) * sinhf(logf(2.0f) / 2.0f * bandwidth * w0 / sinf(w0)); filter->b[0] = alpha; |