diff options
Diffstat (limited to 'pd/doc/3.audio.examples/20.pulse.spectrum.pd')
-rw-r--r-- | pd/doc/3.audio.examples/20.pulse.spectrum.pd | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/pd/doc/3.audio.examples/20.pulse.spectrum.pd b/pd/doc/3.audio.examples/20.pulse.spectrum.pd new file mode 100644 index 00000000..49d21cbd --- /dev/null +++ b/pd/doc/3.audio.examples/20.pulse.spectrum.pd @@ -0,0 +1,136 @@ +#N canvas 15 126 887 588 12; +#X obj 189 166 line~; +#X obj 42 187 cos~; +#X graph graph1 0 -1.02 882 1.02 633 508 833 378; +#X array pulse-output 882 float 0; +#X pop; +#X floatatom 71 317 0 0 0; +#N canvas 159 26 495 266 output 0; +#X obj 338 160 t b; +#X obj 338 110 f; +#X obj 338 60 inlet; +#X text 344 29 mute; +#X obj 338 185 f; +#X msg 425 178 0; +#X msg 338 85 bang; +#X obj 338 135 moses 1; +#X obj 425 153 t b f; +#X obj 397 117 moses 1; +#X obj 83 148 dbtorms; +#X obj 397 92 r master-lvl; +#X obj 83 42 r master-lvl; +#X obj 338 210 s master-lvl; +#X obj 22 181 inlet~; +#X obj 199 41 inlet; +#X text 199 18 level; +#X obj 199 100 s master-lvl; +#X msg 96 65 set \$1; +#X obj 96 89 outlet; +#X msg 214 64 \; pd dsp 1; +#X obj 83 194 line~; +#X obj 22 212 *~; +#X obj 22 241 dac~; +#X obj 83 171 pack 0 50; +#X text 20 158 audio; +#X text 93 110 show level; +#X connect 0 0 4 0; +#X connect 1 0 7 0; +#X connect 2 0 6 0; +#X connect 4 0 13 0; +#X connect 5 0 13 0; +#X connect 6 0 1 0; +#X connect 7 0 0 0; +#X connect 7 1 8 0; +#X connect 8 0 5 0; +#X connect 9 1 4 1; +#X connect 10 0 24 0; +#X connect 11 0 1 1; +#X connect 11 0 9 0; +#X connect 12 0 10 0; +#X connect 12 0 18 0; +#X connect 14 0 22 0; +#X connect 15 0 17 0; +#X connect 15 0 20 0; +#X connect 18 0 19 0; +#X connect 21 0 22 1; +#X connect 22 0 23 0; +#X connect 22 0 23 1; +#X connect 24 0 21 0; +#X restore 42 345 pd output; +#X msg 118 319 MUTE; +#X obj 189 142 pack 0 50; +#X floatatom 189 41 0 0 0; +#X text 598 545 updated for Pd version 0.26; +#X obj 43 114 -~ 0.5; +#X obj 43 140 *~; +#X obj 189 67 / 10; +#X obj 189 91 moses 0; +#X msg 189 115 0; +#X obj 42 163 clip~ -0.5 0.5; +#X obj 42 289 hip~ 5; +#X graph graph1 0 0 128 500 503 285 759 155; +#X array spectrum 128 float 0; +#X pop; +#X text 184 23 bandwidth; +#X obj 115 267 tabwrite~ pulse-output; +#X msg 105 229 bang; +#X text 143 226 <-- click to graph; +#X obj 189 191 +~ 1; +#N canvas 204 17 358 238 fft 0; +#X obj 46 48 inlet~; +#X obj 159 181 tabwrite~ spectrum; +#X obj 159 145 inlet; +#X obj 46 78 rfft~; +#X obj 46 111 *~; +#X obj 77 111 *~; +#X obj 46 141 sqrt~; +#X obj 191 45 block~ 1024 1; +#X connect 0 0 3 0; +#X connect 2 0 1 0; +#X connect 3 0 4 0; +#X connect 3 0 4 1; +#X connect 3 1 5 0; +#X connect 3 1 5 1; +#X connect 4 0 6 0; +#X connect 5 0 6 0; +#X connect 6 0 1 0; +#X restore 53 267 pd fft; +#X obj 43 90 phasor~ 172.266; +#X obj 42 211 +~ 1; +#X text 63 1 PULSE SPECTRUM MEASUREMENT; +#X text 16 377 Here is a measured amplitude spectrum for the pulse +train. Nutice that \, other than a smallish spillover \, the energy +sits in one "lobe" whose changing width justifies our calling the squeeze +factor the "bandwidth."; +#X text 16 442 The spectrum is in units of amplitude. THe sidelobes +\, although they look small \, are actually only about 34 dB down. +You can design more complicated pulse trains \, little Blackman window +functions \, which control the sidelobes much better.; +#X text 17 518 The spectrum measurement is done in the "pd fft" subwindow +\, but see the "FFT examples" for information about that.; +#X text 501 291 0; +#X text 749 288 5512; +#X text 633 511 ---- 0.02 seconds ----; +#X text 160 319 <-- output; +#X connect 0 0 21 0; +#X connect 1 0 24 0; +#X connect 3 0 4 1; +#X connect 4 0 3 0; +#X connect 5 0 4 2; +#X connect 6 0 0 0; +#X connect 7 0 11 0; +#X connect 9 0 10 0; +#X connect 10 0 14 0; +#X connect 11 0 12 0; +#X connect 12 0 13 0; +#X connect 12 1 6 0; +#X connect 13 0 6 0; +#X connect 14 0 1 0; +#X connect 15 0 4 0; +#X connect 19 0 18 0; +#X connect 19 0 22 1; +#X connect 21 0 10 1; +#X connect 23 0 9 0; +#X connect 24 0 22 0; +#X connect 24 0 15 0; +#X connect 24 0 18 0; |