various

Author: RickTaylor79

.gitignore

@@ -21,3 +21,4 @@ oi grandad/AudioFiles/AudioFiles/Loops/
 *.wav
 *.aif
 oi grandad/AudioFiles/Loops/
+.DS_Store

oi grandad/DspNetworks/CodeLibrary/faust/DelRev1.dsp

@@ -0,0 +1,11 @@
+import("stdfaust.lib");
+import("misceffects.lib");
+
+nChans = 2;
+
+process = dm.reverse_echo_demo(nChans);
+
+reverse_echo_demo(nChans) =  ef.reverseEchoN(nChans,delMax) : ef.reverseEchoN(nChans) 
+with {
+    delMax = 2^int(nentry("Log2(Delay)",15,12,16,1)); // delay line length
+};

oi grandad/DspNetworks/CodeLibrary/faust/DelRev2.dsp

@@ -0,0 +1,11 @@
+import("stdfaust.lib");
+import("misceffects.lib");
+
+
+
+process = dm.reverse_echo_demo(1);
+
+reverse_echo_demo(nChans) =  ef.reverseEchoN(nChans,delMax) : ef.uniformPanToStereo(nChans) 
+with {
+    delMax = 2^int(nentry("Log2(Delay)",15,12,16,1)); // delay line length
+};

oi grandad/DspNetworks/CodeLibrary/faust/RevDel.dsp

@@ -0,0 +1,97 @@
+import("stdfaust.lib");
+
+//Average filter
+filterLength = 500;
+movingAvg(x) = par(i, filterLength, x@(i)):>_/filterLength;
+
+//Delay handle delay
+delayAvg = delMs * (ma.SR/1000) : movingAvg;
+delSec = delMs / 1000;
+
+//Measured tape speed= 8ips = 0.203 m/s
+//headDist = 0.203 * delSec; //[m] Not used
+
+//creating an angular frequency
+pulse(freq) = os.lf_saw(freq) * (ma.PI);
+
+//phasenoise frequency is related to drift freq: i want smooth changes->freq has to be lower for 
+//low freq drift while noise amplitude has to be higher 
+delDrift1 = sin(sinArg) * ampliSec * ma.SR //Capstan: Observed amplitude = 0.15 ms
+with
+{
+    phaseNoise = (no.noise*5) : fi.lowpass6e(100); //adding noise to phase
+    freq = 26;
+    phase = ma.PI * 3/2 + phaseNoise;
+    sinArg = pulse(freq) + phase;
+    ampliSec = 0.00015;
+}; 
+delDrift2 = sin(sinArg) * ampliSec * ma.SR //Pinch wheel1: Observed amplitude = 0.15 ms
+with
+{
+    phaseNoise = (no.noise*7) : fi.lowpass6e(35); //adding noise to phase
+    freq = 5;
+    phase = 0 + phaseNoise; //not visible in paper
+    sinArg = pulse(freq) + phase;
+    ampliSec = 0.00010 * delSec;
+};   
+delDrift3 = sin(sinArg) * ampliSec * ma.SR //Pinch wheel2: Observed amplitude = 0.75 ms
+with
+{
+    phaseNoise = (no.noise*20) : fi.lowpass6e(20); //adding noise to phase
+    freq = 2.5;
+    phase = ma.PI * 3/4 + phaseNoise;
+    sinArg = pulse(freq) + phase;
+    ampliSec = 0.00075 * delSec;
+};  
+
+//Noise
+delNoise = (no.noise* noiseAmp * ma.SR) : LPfilter
+with
+{
+    //Noise is proportional to head separation.
+    noiseAmp = 0.00075 * delSec;
+    LPfilter = fi.lowpass3e(70);
+};
+
+//0.75 is a factor to make the overall variation level similar to the paper
+delayTotal = ((delDrift1 + delDrift2 + delDrift3 + delNoise)*0.75) + delayAvg;
+
+//Variable comb filter
+pole = 0.9999;
+filterDel = startFactor + ((endFactor-startFactor) * delSec) : int
+with
+{   //48000 hardcoded SR, for some reason it does not work with ma.SR
+    firstNotchFreqStart = 7.5; //[Hz]
+    firstNotchFreqEnd = 2;
+    startFactor = 48000/(2 * firstNotchFreqStart);
+    endFactor = 48000/(2 * firstNotchFreqEnd);
+};
+ffComb(delay, pole) = _<:_, _@delay*pole :> _/2; 
+
+delayProcessed = delayTotal : ffComb(filterDel, pole) : int;
+
+//Actual Delay + feedback
+delayFunction(n, d, x) = x @ min(n, max(0, d));
+feedback(x) = (x : tapeSat + x ~ (delay * repeats)) : filter
+with
+{
+    tapeSat = co.limiter_1176_R4_mono;
+    delay = delayFunction(50000, delayProcessed, x);
+   filter = fi.lowpass(2,7000);
+};
+
+//Nonlinear distortion
+//amplifier(g) = ef.cubicnl_nodc(g, 0.1); //Not used
+
+//User params
+delMs = hslider("delay(ms)", 300, 1, 1000, 1);
+repeats = vslider("feedback[style:knob]", 0.5, 0, 2, 0.01);
+//echoLevel = vslider("Echo Volume[style:knob]", 0.5, 0, 1, 0.01); //Not used
+
+delay_module(dtime,phase) = rwtable(MAX_DELAY,0.0,indexphasor(dtime,phase):int,_,indexphasor(dtime,phase+1):int):window with{
+  window =  *( sin(0.5*ma.PI* phasor_phase(dtime,phase)/dtime));
+};//init have to be 0.0 floating point
+reversedelay_mono(dtime) = _<:delay_module(dtime,0),delay_module(dtime,dtime/2):>_;
+
+/*Process*/
+process = feedback(_) <: _, _;

oi grandad/DspNetworks/CodeLibrary/faust/klp2.dsp

@@ -1,11 +1,11 @@
-declare name "korg35LPF";
-declare description "Demonstration of the Korg 35 LPF";
-declare author "Eric Tarr";
-
 import("stdfaust.lib");
+import("misceffects.lib");
 
-Q = hslider("Q",1,0.5,10,0.01);
-normFreq = hslider("freq",0.5,0,1,0.001):si.smoo;
+nChans = 2;
 
+process = dm.reverse_echo_demo(nChans);
 
-process = ve.korg35LPF(normFreq,Q), ve.korg35LPF(normFreq,Q);
+reverse_echo_demo(nChans) =  ef.reverseEchoN(nChans,delMax) : ef.reverseEchoN(nChans) 
+with {
+    delMax = 2^int(nentry("Log2(Delay)",15,12,16,1)); // delay line length
+};

oi grandad/DspNetworks/CodeLibrary/faust/smthdelay.dsp

@@ -1,13 +1,5 @@
-//-----------------------------------------------
-// 				A 1000 ms Stereo Echo
-//-----------------------------------------------
 
-echo(d,f) = + ~ (@(d) : *(f));
+import("stdfaust.lib");
 
-echo1s = echo(delay,fback) with {
-		delay = hslider("Delay[OWL:PARAMETER_A]", 0, 0, 1000, 0.10)*millisec;
-		fback = hslider("Feedback[OWL:PARAMETER_B]", 0, 0, 1, 0.01);
-		millisec = 48;
-	};
 
-process = vgroup("stereoecho", (echo1s, echo1s));
+process = dm.reverse_echo_demo(2);