1// this code is copied from faust effect.lib and 2// some parameter texts and defaults changed 3 4declare id "zita_rev1"; 5declare name "Zita Rev1"; 6declare category "Reverb"; 7 8import("stdfaust.lib"); 9 10process(x,y) = re.zita_rev1_stereo(rdel,f1,f2,t60dc,t60m,fsmax,x,y) 11 : out_eq : dry_wet(x,y) : out_level 12with { 13 14 fsmax = 48000.0; // highest sampling rate that will be used 15 16 fdn_group(x) = hgroup( 17 "zita_rev1[name:Zita_Rev1] [tooltip: ~ ZITA REV1 FEEDBACK DELAY NETWORK (FDN) & SCHROEDER ALLPASS-COMB REVERBERATOR (8x8). See Faust's effect.lib for documentation and references]", x); 18 19 in_group(x) = fdn_group(hgroup("input[name:Input]", x)); 20 21 rdel = in_group(vslider("in_delay[name:Pre Delay] [unit:ms] [style:knob] 22 [tooltip: Delay in ms before reverberation begins]", 23 60,20,100,1)); 24 25 freq_group(x) = fdn_group(hgroup("decay_times[name:Decay Times in Bands]", x)); 26 27 f1 = freq_group(vslider("lf_x[name:Freq X] [unit:Hz] [style:knob] [log] 28 [tooltip: Crossover frequency (Hz) separating low and middle frequencies]", 29 200, 50, 1000, 1.08)); 30 31 t60dc = freq_group(vslider("low_rt60[name:Low] [unit:s] [style:knob] [log] 32 [style:knob] [tooltip: T60 = time (in seconds) to decay 60dB in low-frequency band]", 33 3, 1, 8, 1.08)); 34 35 t60m = freq_group(vslider("mid_rt60[name:Mid] [unit:s] [style:knob] [log] 36 [tooltip: T60 = time (in seconds) to decay 60dB in middle band]", 37 2, 1, 8, 1.08)); 38 39 f2 = freq_group(vslider("hf_damping[name:HF Damp] [unit:Hz] [style:knob] [log] 40 [tooltip: Frequency (Hz) at which the high-frequency T60 is half the middle-band's T60]", 41 6000, 1500, 0.49*fsmax, 1.08)); 42 43 out_eq = pareq_stereo(eq1f,eq1l,eq1q) : pareq_stereo(eq2f,eq2l,eq2q); 44// Zolzer style peaking eq (not used in zita-fi.rev1) (filter.lib): 45// pareq_stereo(eqf,eql,Q) = fi.peak_eq(eql,eqf,eqf/Q), fi.peak_eq(eql,eqf,eqf/Q); 46// Regalia-Mitra peaking eq with "Q" hard-wired near sqrt(g)/2 (filter.lib): 47 pareq_stereo(eqf,eql,Q) = fi.peak_eq_rm(eql,eqf,tpbt), fi.peak_eq_rm(eql,eqf,tpbt) 48 with { 49 tpbt = wcT/sqrt(g); // tan(ma.PI*B/ma.SR) where B bandwidth in Hz (Q^2 ~ g/4) 50 wcT = 2*ma.PI*eqf/ma.SR; // peak frequency in rad/sample 51 g = ba.db2linear(eql); // peak gain 52 }; 53 54 eq1_group(x) = fdn_group(hgroup("equalizer1[name:RM Peaking Equalizer 1]", x)); 55 56 eq1f = eq1_group(vslider("eq1_freq[name:Freq] [unit:Hz] [style:knob] [log] 57 [tooltip: Center-frequency of second-order Regalia-Mitra peaking equalizer section 1]", 58 315, 40, 2500, 1.08)); 59 60 eq1l = eq1_group(vslider("eq1_level[name:Level] [unit:dB] [style:knob] 61 [tooltip: Peak level in dB of second-order Regalia-Mitra peaking equalizer section 1]", 62 0, -15, 15, 0.1)); 63 64 eq1q = eq1_group(vslider("eq1_q[name:Q] [style:knob] 65 [tooltip: Q = centerFrequency/bandwidth of second-order peaking equalizer section 1]", 66 3, 0.1, 10, 0.1)); 67 68 eq2_group(x) = fdn_group(hgroup("equalizer2[name:RM Peaking Equalizer 2]", x)); 69 70 eq2f = eq2_group(vslider("eq2_freq[name:Freq] [unit:Hz] [style:knob] [log] 71 [tooltip: Center-frequency of second-order Regalia-Mitra peaking equalizer section 2]", 72 1500, 160, 10000, 1.08)); 73 74 eq2l = eq2_group(vslider("eq2_level[name:Level] [unit:dB] [style:knob] 75 [tooltip: Peak level in dB of second-order Regalia-Mitra peaking equalizer section 2]", 76 0, -15, 15, 0.1)); 77 78 eq2q = eq2_group(vslider("eq2_q[name:Q] [style:knob] 79 [tooltip: Q = centerFrequency/bandwidth of second-order peaking equalizer section 2]", 80 3, 0.1, 10, 0.1)); 81 82 out_group(x) = fdn_group(hgroup("output[name:Output]", x)); 83 84 dry_wet(x,y) = *(wet) + dry*x, *(wet) + dry*y with { 85 wet = 0.5*(drywet+1.0); 86 dry = 1.0-wet; 87 }; 88 89 drywet = out_group(vslider("dry_wet_mix[name:Dry/Wet] [style:knob] 90 [tooltip: -1 = dry, 1 = wet]", 91 0, -1.0, 1.0, 0.01)) : si.smooth(0.999); 92 93 out_level = *(gain),*(gain); 94 95 gain = out_group(vslider("level[name:Level] [unit:dB] [style:knob] 96 [tooltip: Output scale factor]", 0, -70, 40, 0.1)) 97 : si.smooth(0.999) : ba.db2linear; 98 99}; 100