musicdsp.org source code archive - WSInf

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Waveshaper :: Gloubi-boulga Filters 1-RC and C filter 18dB/oct resonant 3 pole LPF with tanh() dist 1st and 2nd order pink noise filters 3 Band Equaliser 303 type filter with saturation All-Pass Filters, a good explanation Another 4-pole lowpass... Bass Booster Biquad C code C++ class implementation of RBJ Filters C-Weighed Filter Cascaded resonant lp/hp filter Cool Sounding Lowpass With Decibel Measured Resonance DC filter Delphi Class implementation of the RBJ filters Digital RIAA equalization filter coefficients Direct form II Fast Downsampling With Antialiasing Formant filter frequency warped FIR lattice Hilbert Filter Coefficient Calculation Hiqh quality /2 decimators Karlsen Lowpass filter for parameter edge filtering LP and HP filter LPF 24dB/Oct Moog Filter Moog VCF Moog VCF, variation 1 Moog VCF, variation 2 Notch filter One pole LP and HP One pole, one zero LP/HP One zero, LP/HP Peak/Notch filter Phase equalization Pink noise filter Plotting R B-J Equalisers in Excel Polyphase Filters Polyphase Filters (Delphi) Prewarping RBJ Audio-EQ-Cookbook RBJ Audio-EQ-Cookbook Remez Exchange Algorithm (Parks/McClellan) Remez Remez (Parks/McClellan) Resonant filter Resonant IIR lowpass (12dB/oct) Resonant low pass filter Reverb Filter Generator State variable State Variable Filter (Chamberlin version) State Variable Filter (Double Sampled, Stable) Stilson's Moog filter code Time domain convolution with O(n^log2(3)) Time domain convolution with O(n^log2(3)) Type : LPF 24dB/Oct Various Biquad filters Windowed Sinc FIR Generator Zoelzer biquad filters Other
VST SDK GUI Switch without 16-Point Fast Integer Sinc Interpolator. 16-to-8-bit first-order dither 3rd order Spline interpollation 5-point spline interpollation Allocating aligned memory Antialiased Lines Automatic PDC system Base-2 exp Bit-Reversed Counting Block/Loop Benchmarking Branchless Clipping Calculate notes (java) Center separation in a stereo mixdown Center separation in a stereo mixdown Cheap pseudo-sinusoidal lfo Clipping without branching Constant-time exponent of 2 detector Conversions on a PowerPC Copy-protection schemes Cubic interpollation Cure for malicious samples Denormal DOUBLE variables, macro Denormal numbers Denormal numbers, the meta-text Denormalization preventer Denormalization preventer Dither code Dithering Double to Int Envelope Follower Exponential parameter mapping fast abs/neg/sign for 32bit floats Fast binary log approximations Fast cube root, square root, and reciprocal for x86/SSE CPUs. fast exp() approximations Fast exp2 approximation Fast log2 fast power and root estimates for 32bit floats Float to int Float to int (more intel asm) Float-to-int, coverting an array of floats Gaussian dithering Gaussian random numbers Hermite Interpolator (x86 ASM) Hermite interpollation Lock free fifo Matlab Time Domain Impulse Response Inverter/Divider MATLAB-Tools for SNDAN MIDI note/frequency conversion Millimeter to DB (faders...) Motorola 56300 Disassembler Noise Shaping Class Nonblocking multiprocessor/multithread algorithms in C++ please add it as a comment to the Denormalization preventer entry (no comments are allowed now) thanks pow(x,4) approximation Reading the compressed WA! parts in gigasampler files Real basic DSP with Matlab (+ GUI) ... real value vs display value Really fast x86 floating point sin/cos Reasonably accurate/fastish tanh approximation resampling Saturation Sin(x) Aproximation (with SSE code) Sin, Cos, Tan approximation Synthesis
Page 1: musicdsp.org source code archive Th
Page 5 and 6: (Allmost) Ready-to-use oscillators
Page 7 and 8: Alias-free waveform generation with
Page 9 and 10: AM Formantic Synthesis (click this
Page 11 and 12: Another cheap sinusoidal LFO (click
Page 13 and 14: property Rate:Single read FRate wri
Page 15 and 16: procedure SetSampleRate(const Value
Page 17 and 18: antialiased square generator (click
Page 19 and 20: Audiable alias free waveform gen us
Page 21 and 22: Bandlimited sawtooth synthesis (cli
Page 23 and 24: } Nbeta = b->N * beta; cosbeta = co
Page 25 and 26: } lastnumpartials=partials; a=int(2
Page 27 and 28: Bandlimited waveform generation wit
Page 29 and 30: Approximation through processing of
Page 31 and 32: Bandlimited waveforms... (click thi
Page 33 and 34: I've already nearly done all the di
Page 35 and 36: C++ gaussian noise generation (clic
Page 37 and 38: Cubic polynomial envelopes (click t
Page 39 and 40: Drift generator (click this to go b
Page 41 and 42: Easy noise generation (click this t
Page 43 and 44: Fast Exponential Envelope Generator
Page 45 and 46: } coeff = 1.0f + (log(levelEnd) - l
Page 47 and 48: inc our 32bit integer LFO pos & let
Page 49 and 50: egin fSpeed:=v; iSpeed:=Round($1000
Page 51 and 52: Fast sine wave calculation (click t
Page 53 and 54:
Fast Whitenoise Generator (click th
Page 55 and 56:
Gaussian White Noise (click this to
Page 57 and 58:
Inverted parabolic envelope (click
Page 59 and 60:
if (nargin < 2 ) thresh = -100; end
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Phase modulation Vs. Frequency modu
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Phase modulation Vs. Frequency modu
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Pulsewidth modulation (click this t
Page 67 and 68:
RBJ Wavetable 101 (click this to go
Page 69 and 70:
SawSin (click this to go back to th
Page 71 and 72:
Square Waves (click this to go back
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Waveform generator using MinBLEPS (
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Weird synthesis (click this to go b
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} } // Step 4 : rising edge detecto
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Coefficients for Daubechies wavelet
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-3.22448695846383746484797550621349
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9.323261308672633862226517802548514
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2.135815619103406884039052814341926
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-7.70690988123119623288037272295551
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1.509692082823910867903367712096001
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-8.36549047125880079934928979439790
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1.089584350416766882738651833752634
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4.784787462793710621468610706120519
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-5.65781324505881838042401697351671
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-4.17514164854039779729632506577571
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Envelope detector (click this to go
Page 103 and 104:
Envelope follower with different at
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from : (1< - ??????????????????????
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while(1){ if(i!=0) { while((i&1)==0
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l=size-1; m=size>>1; for (i=0,j=0;
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//Source: see the routines it calls
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long dl, dl2, i, j; double d0,d1,d2
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i3+=n8; i4+=n8; t1=(data[i3]+data[i
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i4=i3+n4; i5=i+n4-j+1; i6=i5+n4; i7
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free(data2); }
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Frequency response from biquad coef
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c = ((c * i) + Math.abs(a[i])) / (i
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LPC analysis (autocorrelation + Lev
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egin for j:=0 to P do begin A[0]:=0
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} (b0*b0 + b1*b1 + b2*b2 + b3*b3 +
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{ return (MulVect::calc(v, 0)); } }
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Measuring interpollation noise (cli
Page 135 and 136:
Simple peak follower (click this to
Page 137 and 138:
else tone[i] = 2*cos(A)*cos(A) - co
Page 139 and 140:
Tone detection with Goertzel (x86 A
Page 141 and 142:
1-RC and C filter (click this to go
Page 143 and 144:
1st and 2nd order pink noise filter
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double f2p3; // Sample history buff
Page 147 and 148:
303 type filter with saturation (cl
Page 149 and 150:
All-Pass Filters, a good explanatio
Page 151 and 152:
Another 4-pole lowpass... (click th
Page 153 and 154:
fCoeffs[0]:=p; fCoeffs[1]:=4.0*p*s;
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Biquad C code (click this to go bac
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a1 = 2 * ((A - 1) - (A + 1) * cs);
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} // hishelf if(type==8) { b0=float
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C-Weighed Filter (click this to go
Page 163 and 164:
Cool Sounding Lowpass With Decibel
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Delphi Class implementation of the
Page 167 and 168:
0:=alpha; b1:=0.0; b2:=-alpha; a0:=
Page 169 and 170:
Direct form II (click this to go ba
Page 171 and 172:
Formant filter (click this to go ba
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frequency warped FIR lattice (click
Page 175 and 176:
Hiqh quality /2 decimators (click t
Page 177 and 178:
Karlsen (click this to go back to t
Page 179 and 180:
end; procedure TKarlsen.SetQ(v:Sing
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float b_cut = ((fvar1 * fvar1) + ((
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Lowpass filter for parameter edge f
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} public float Process(float input)
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LPF 24dB/Oct (click this to go back
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float v2; v2 = 40000; // twice the
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..but it won't be much faster than
Page 194 and 195:
Moog VCF (click this to go back to
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Moog VCF, variation 2 (click this t
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Notch filter (click this to go back
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One pole, one zero LP/HP (click thi
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Peak/Notch filter (click this to go
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Pink noise filter (click this to go
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Polyphase Filters (click this to go
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{0.2659685265210946 ,0.665104153263
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delete filter_b; }; double CHalfBan
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------------ AllPass Filter Cascade
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end; end.
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RBJ Audio-EQ-Cookbook (click this t
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1 = -(1 + cos(w0)) b2 = (1 + cos(w0
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RBJ Audio-EQ-Cookbook (click this t
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Remez Remez (Parks/McClellan) (clic
Page 224 and 225:
Resonant IIR lowpass (12dB/oct) (cl
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{ unsigned int i; float *hist1_ptr,
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* For n=4, or two second order sect
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{ } /* Calculate a1 and a2 and over
Page 232:
Reverb Filter Generator (click this
Page 235 and 236:
State Variable Filter (Chamberlin v
Page 237 and 238:
State Variable Filter (Double Sampl
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} lowpass = output; highpass = inpu
Page 241 and 242:
} if (size == 1) { out[0] = in1[0]
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Time domain convolution with O(n^lo
Page 245 and 246:
Various Biquad filters (click this
Page 247 and 248:
void setfilter_shelvelowpass(f,freq
Page 249 and 250:
Windowed Sinc FIR Generator (click
Page 251 and 252:
do W[i]:=W[i]*(0.35875-0.48829*cos(
Page 253 and 254:
int i; double *h1 = new double[N];
Page 255 and 256:
Zoelzer biquad filters (click this
Page 257 and 258:
So tan(x) would be x - x^3/6 + x^5/
Page 259 and 260:
2 Wave shaping things (click this t
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#define infile "a.raw" //input file
Page 263 and 264:
Band Limited PWM Generator (click t
Page 265 and 266:
Bit quantization/reduction effect (
Page 267 and 268:
Compressor (click this to go back t
Page 269 and 270:
Decimator (click this to go back to
Page 271 and 272:
Delay time calculation for reverber
Page 273 and 274:
dynamic convolution (click this to
Page 275 and 276:
Early echo's with image-mirror tech
Page 277 and 278:
for (y=-ceil(dist_max/(2*breite));y
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} } j=0; for(i=0;i
Page 281 and 282:
Raummodell: H - Hoererposition L -
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} } } angle=atan(y_pos/x_pos); if (
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ECE320 project: Reverberation w/ pa
Page 287 and 288:
move#ser_data,r6; incoming data buf
Page 289 and 290:
movex:(r0)+,a; er delay asr#20,a,a
Page 291 and 292:
fold back distortion (click this to
Page 293 and 294:
Lo-Fi Crusher (click this to go bac
Page 295 and 296:
Most simple static delay (click thi
Page 297 and 298:
Parallel combs delay calculation (c
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inherited; fA1:=0; fZM1:=0; end; de
Page 301 and 302:
implementation { TPhaser } function
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end; a[1]:=b-fY[5]; b:=a[1]*fA1; fY
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Polynominal Waveshaper (click this
Page 307 and 308:
Reverberation techniques (click thi
Page 309 and 310:
smsPitchScale Source Code (click th
Page 311 and 312:
Stereo Enhancer (click this to go b
Page 313 and 314:
Time compression-expansion using st
Page 315 and 316:
transistor differential amplifier s
Page 317 and 318:
WaveShaper (click this to go back t
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Waveshaper (click this to go back t
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Waveshaper :: Gloubi-boulga (click
Page 323 and 324:
VST SDK GUI Switch without (click t
Page 325 and 326:
private final int POINTS = 1 15; a
Page 327 and 328:
3rd order Spline interpollation (cl
Page 329 and 330:
5-point spline interpollation (clic
Page 331 and 332:
Antialiased Lines (click this to go
Page 333 and 334:
Automatic PDC system (click this to
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} return ret; }
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Block/Loop Benchmarking (click this
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END; {$ELSE} BEGIN RESULT:=(Value S
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} } throw new IllegalArgumentExcept
Page 343 and 344:
Center separation in a stereo mixdo
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Center separation in a stereo mixdo
Page 347 and 348:
Clipping without branching (click t
Page 349 and 350:
Conversions on a PowerPC (click thi
Page 351 and 352:
Cubic interpollation (click this to
Page 353 and 354:
Denormal DOUBLE variables, macro (c
Page 355 and 356:
Use this eq. to calculate the appro
Page 357 and 358:
Denormalization preventer (click th
Page 359 and 360:
Anyway this version gives more expl
Page 361 and 362:
Dithering (click this to go back to
Page 363 and 364:
Envelope Follower (click this to go
Page 365:
fast abs/neg/sign for 32bit floats
Page 368 and 369:
Fast cube root, square root, and re
Page 370 and 371:
float z; _asm { rsqrtss xmm0, x rcp
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1 - 1.5 (using fastexp6, the maximu
Page 374 and 375:
Fast log2 (click this to go back to
Page 376 and 377:
fast power and root estimates for 3
Page 378 and 379:
Float to int (more intel asm) (clic
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Float-to-int, coverting an array of
Page 382 and 383:
Gaussian random numbers (click this
Page 384 and 385:
Pentium 4 and above, but not using
Page 386 and 387:
HTH DSP from : antiprosynthesis@hot
Page 388 and 389:
Matlab Time Domain Impulse Response
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MATLAB-Tools for SNDAN (click this
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end; // converts from MIDI note to
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Motorola 56300 Disassembler (click
Page 397 and 398:
} __inline int round(float f) { int
Page 399 and 400:
Nonblocking multiprocessor/multithr
Page 401 and 402:
pow(x,4) approximation (click this
Page 403 and 404:
Real basic DSP with Matlab (+ GUI)
Page 405 and 406:
Really fast x86 floating point sin/
Page 407 and 408:
from : Christian@savioursofsoul.de
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pfmul mm1, mm0 //mm1=a movq mm2, mm
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esampling (click this to go back to
Page 413 and 414:
depending on whether you're looking
Page 415 and 416:
Sin, Cos, Tan approximation (click
Page 417:
fResult += 0.180141f; fResult *= fV
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