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			SYNTHLAB LIBRARY (beta 2)
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// --- MIXERS AND SHAPERS ---//
ramp0(in1, linc);	         // ramps to new val, incr = 1/#samples
smoother1(val);		         // smoothing over ~46 clock cycles
mixer3(x);			 // 3-way linear mixer, returns gain for 3channels
pan3db(x);			 // pan with -3dB center
parabol(in1, shape);             // parabolic shaper
hyperbol(in1, shape);            // hyperbolic shaper
a2db(a);			 // quick amp to deciBel conversion
db2a(db);			 // quick deciBel to amp conversion
qsin(x);			 // quick sine calc
qcos(x);			 // quick cosine emulation
qtan(x);		 	 // simple tan emulation
qtanh2(x); 			 // Good-quality tanh emulation
powerfade(L1, L2, R1, R2, x);	 // ganged fader with exp crossfade
stereomix(L1, L2, R1, R2, x);	 // stereo ganged mix
quadAutoMix(in1, in2, in3, in4); // scale 4 inputs to add up to unity gain

// --- RESAMPLING ---//
spline2xUp(in1); 		// 2x upsampling,   Catmulli Rom spline
spline2xDn(in1, in2); 		// 2x downsampling, Catmulli Rom spline
spline4xUp(in1); 		// 4x upsampling,   Catmulli Rom spline
spline4xDn(in1, in2, in3, in4); // 4x downsampling, Catmulli Rom spline
upsample(input); 		// 3x upsampling,   sinc coefficients
downsample(val1, val2, val3);	// 3x downsampling, sinc coefficients
// --- EQUALIZERS AND DYNAMICS ---//
lo1pole(left, right, p);	    // 1-pole low pass filter
loshelf12(in1, in2, pitch, db);	    // 1-pole stereo low-shelving EQ filter
hishelf12(in1, in2, pitch, db);     // 1-pole stereo low-shelving EQ filter
shelf2corelo(in1, a0, a1, b1, w);   // 2-pole low shelving EQ core
loshelf22(in1, in2, p, db);         // 2-pole stereo low-shelving EQ filter
shelf2corehi(in1, a0, a1, b1);      // 2-pole high shelving EQ core
hishelf22(in1, in2, p, db);         // 2-pole stereo low-shelving EQ filter		
peakeq1(in1, p, db, bw);            // 1-pole peak EQ core 
peakeq1core(in1, w, d2, a0, a1, a2);// 2-pole peak EQ core
peakeq12(in1, in2, p, db, bw);      // 2-pole stereo peak EQ filter 
// utility function for demoing EQs:
eqsel(in1, in2, lop, midp, hip, log, midg, hig, bw, mode);  
limit1(in1, lclk); 		    // zero-crossOver limiter to unity gain
limit2(in1,in2,lvl,window,att,rel); // stereo limiter with settable window
// combined compressor and limiter
compander1(in1, type, amp, thresh, ratio, att, rel, lclk);
// --- FILTERS ---//
// 2-pole Butterworth svf core:
svfCore1(in1, wa, d1, ft1, ft1n, ft2, zlp, zbp); 
// Fully 3x-oversampled 2p/4p type -mixing SVF
filt3x(input,f0, q0, s0, lx, bx, hx, f2x, l4x, b4x, h4x, f4x, rsrx2pi){
svfCoeffs3x(f0, q0, s0, f4x, rsrx2pi); // coefficents for filt3x()
// 5D saturating filter with table-based gain limiting
filt5d3x(input, pitch, poles, res, sat, type, srflt);
svfCore5(in1, w, d, d2, g1, g2);       // Better 2-pole Butterworth core
saturator5(in1, sat, lclk, linc);      // 2x-oversampling tanh-based saturator
// 5d oversaturating filter with 2x tanh-based saturation
filt5d2x(in1, pitch, poles, res, sat, type, drive, lclk, linc);