diff options
Diffstat (limited to 'Alc/effects/reverb.c')
| -rw-r--r-- | Alc/effects/reverb.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/Alc/effects/reverb.c b/Alc/effects/reverb.c index 95a5a3ac..1b8a08fe 100644 --- a/Alc/effects/reverb.c +++ b/Alc/effects/reverb.c @@ -229,9 +229,9 @@ typedef struct VecAllpass { typedef struct T60Filter { /* Two filters are used to adjust the signal. One to control the low - * frequencies, and one to control the high frequencies. The HF filter also - * adjusts the overall output gain, affecting the remaining mid-band. + * frequencies, and one to control the high frequencies. */ + ALfloat MidGain[2]; BiquadFilter HFFilter, LFFilter; } T60Filter; @@ -395,6 +395,8 @@ static void ALreverbState_Construct(ALreverbState *state) state->Late.VecAp.Offset[i][0] = 0; state->Late.VecAp.Offset[i][1] = 0; + state->Late.T60[i].MidGain[0] = 0.0f; + state->Late.T60[i].MidGain[1] = 0.0f; BiquadFilter_clear(&state->Late.T60[i].HFFilter); BiquadFilter_clear(&state->Late.T60[i].LFFilter); } @@ -652,13 +654,11 @@ static void CalcT60DampingCoeffs(const ALfloat length, const ALfloat lfDecayTime ALfloat mfGain = CalcDecayCoeff(length, mfDecayTime); ALfloat hfGain = CalcDecayCoeff(length, hfDecayTime); + filter->MidGain[1] = mfGain; BiquadFilter_setParams(&filter->LFFilter, BiquadType_LowShelf, lfGain/mfGain, lf0norm, calc_rcpQ_from_slope(lfGain/mfGain, 1.0f)); BiquadFilter_setParams(&filter->HFFilter, BiquadType_HighShelf, hfGain/mfGain, hf0norm, calc_rcpQ_from_slope(hfGain/mfGain, 1.0f)); - filter->HFFilter.b0 *= mfGain; - filter->HFFilter.b1 *= mfGain; - filter->HFFilter.b2 *= mfGain; } /* Update the offsets for the main effect delay line. */ @@ -965,7 +965,8 @@ static ALvoid ALreverbState_update(ALreverbState *State, const ALCcontext *Conte State->Early.Coeff[i][1] != State->Early.Coeff[i][0] || State->LateDelayTap[i][1] != State->LateDelayTap[i][0] || State->Late.VecAp.Offset[i][1] != State->Late.VecAp.Offset[i][0] || - State->Late.Offset[i][1] != State->Late.Offset[i][0]) + State->Late.Offset[i][1] != State->Late.Offset[i][0] || + State->Late.T60[i].MidGain[1] != State->Late.T60[i].MidGain[0]) { State->FadeCount = 0; break; @@ -1348,9 +1349,10 @@ static void LateReverb_Unfaded(ALreverbState *State, ALsizei offset, const ALsiz { ALsizei late_delay_tap = offset - State->LateDelayTap[j][0]; ALsizei late_feedb_tap = offset - State->Late.Offset[j][0]; + ALfloat mid_gain = State->Late.T60[j].MidGain[0]; for(i = 0;i < todo;i++) temps[j][i] = DelayLineOut(&main_delay, late_delay_tap++, j)*densityGain + - DelayLineOut(&late_delay, late_feedb_tap++, j); + DelayLineOut(&late_delay, late_feedb_tap++, j)*mid_gain; LateT60Filter(temps[j], todo, &State->Late.T60[j]); } @@ -1393,22 +1395,26 @@ static void LateReverb_Faded(ALreverbState *State, ALsizei offset, const ALsizei for(j = 0;j < NUM_LINES;j++) { + const ALfloat oldMidGain = State->Late.T60[j].MidGain[0]; + const ALfloat midGain = State->Late.T60[j].MidGain[1]; + const ALfloat oldMidStep = -oldMidGain / FADE_SAMPLES; + const ALfloat midStep = midGain / FADE_SAMPLES; ALsizei late_delay_tap0 = offset - State->LateDelayTap[j][0]; ALsizei late_delay_tap1 = offset - State->LateDelayTap[j][1]; ALsizei late_feedb_tap0 = offset - State->Late.Offset[j][0]; ALsizei late_feedb_tap1 = offset - State->Late.Offset[j][1]; ALfloat fadeCount = fade * FADE_SAMPLES; - ALfloat fader = fade; for(i = 0;i < todo;i++) { const ALfloat fade0 = oldDensityGain + oldDensityStep*fadeCount; const ALfloat fade1 = densityStep*fadeCount; + const ALfloat gfade0 = oldMidGain + oldMidStep*fadeCount; + const ALfloat gfade1 = midStep*fadeCount; temps[j][i] = FadedDelayLineOut(&main_delay, late_delay_tap0++, late_delay_tap1++, j, fade0, fade1) + FadedDelayLineOut(&late_delay, late_feedb_tap0++, late_feedb_tap1++, j, - 1.0f-fader, fader); - fader += FadeStep; + gfade0, gfade1); fadeCount += 1.0f; } LateT60Filter(temps[j], todo, &State->Late.T60[j]); @@ -1503,6 +1509,7 @@ static ALvoid ALreverbState_process(ALreverbState *State, ALsizei SamplesToDo, c State->LateDelayTap[c][0] = State->LateDelayTap[c][1]; State->Late.VecAp.Offset[c][0] = State->Late.VecAp.Offset[c][1]; State->Late.Offset[c][0] = State->Late.Offset[c][1]; + State->Late.T60[c].MidGain[0] = State->Late.T60[c].MidGain[1]; } State->Late.DensityGain[0] = State->Late.DensityGain[1]; } |