From b8ed40f8c8bb856e4e2b1a5e314bd42ec7f1f9f6 Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Tue, 26 Apr 2005 05:34:40 +0000 Subject: made an object, [pddp_open] which opens a giving patch on the fly. This way, it is no longer necessary to instantiate an object in a help patch in order for it to be linked. For example, the [hid] help patch doesn't need an instance of [all_about_hid]. [all_about_hid] is opened upon request via [pddp_open]. This eliminates bugs and makes the help system load fast, since its loading much less. svn path=/trunk/; revision=2824 --- doc/pddp/help-acoustics.pd | 583 --------------------------------------------- 1 file changed, 583 deletions(-) delete mode 100644 doc/pddp/help-acoustics.pd (limited to 'doc/pddp/help-acoustics.pd') diff --git a/doc/pddp/help-acoustics.pd b/doc/pddp/help-acoustics.pd deleted file mode 100644 index a983f848..00000000 --- a/doc/pddp/help-acoustics.pd +++ /dev/null @@ -1,583 +0,0 @@ -#N canvas 22 16 828 633 10; -#X obj 12 58 mtof; -#X floatatom 12 81 0 0 0; -#X obj 12 105 ftom; -#X floatatom 12 126 0 0 0; -#X text 46 11 ACOUSTIC CONVERSIONS; -#X text 47 58 -- MIDI note number to frequency converter.; -#N canvas 37 -4 899 659 understanding_mtof 0; -#X text 20 13 [mtof] will convert MIDI note numbers to Wave Freqeuency. -This object exists in PD for the sake of convenience and speed of processing. -; -#X obj 37 165 mtof; -#X floatatom 37 143 5 0 0; -#X text 77 142 Select a MIDI note: (Middle C is 60).; -#X floatatom 37 188 5 0 0; -#X obj 37 207 osc~; -#X floatatom 99 203 0 0 0; -#N canvas 397 146 628 393 output 0; -#X obj 393 156 t b; -#X obj 393 106 f; -#X obj 393 56 inlet; -#X text 399 25 mute; -#X obj 393 181 f; -#X msg 480 174 0; -#X msg 393 81 bang; -#X obj 393 131 moses 1; -#X obj 480 149 t b f; -#X obj 452 113 moses 1; -#X obj 138 144 dbtorms; -#X obj 452 88 r master-lvl; -#X obj 138 38 r master-lvl; -#X obj 393 206 s master-lvl; -#X obj 22 181 inlet~; -#X obj 254 37 inlet; -#X text 254 14 level; -#X obj 254 152 s master-lvl; -#X msg 151 61 set \$1; -#X obj 151 85 outlet; -#X obj 138 190 line~; -#X obj 22 212 *~; -#X obj 138 167 pack 0 50; -#X text 34 159 audio; -#X text 148 106 show level; -#X obj 73 182 inlet~; -#X obj 73 213 *~; -#X obj 22 241 dac~ 1; -#X obj 73 241 dac~ 2; -#X msg 290 82 1; -#X obj 265 59 sel 0; -#X msg 265 119 \; pd dsp \$1; -#X msg 265 82 0; -#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 5 0 31 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 22 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 21 0; -#X connect 15 0 17 0; -#X connect 15 0 30 0; -#X connect 18 0 19 0; -#X connect 20 0 21 1; -#X connect 20 0 26 1; -#X connect 21 0 27 0; -#X connect 22 0 20 0; -#X connect 25 0 26 0; -#X connect 26 0 28 0; -#X connect 29 0 31 0; -#X connect 30 0 32 0; -#X connect 30 1 29 0; -#X connect 32 0 31 0; -#X restore 37 232 pd output; -#X msg 128 204 MUTE; -#X text 164 203 <-- Turn up your volume here.; -#X text 15 260 HERE IS THE ALTERNATIVE; -#X obj 36 321 mtof; -#X floatatom 36 281 5 0 0; -#X floatatom 15 345 0 0 0; -#X floatatom 123 461 0 0 0; -#X obj 138 312 <= -1500; -#X obj 138 332 expr 1-$f1; -#X obj 95 352 spigot; -#X obj 95 295 t f f; -#X obj 95 372 min 1499; -#X obj 95 419 expr (8.17579891564*exp(0.0577622650*$f1)); -#X obj 151 352 s zero; -#X obj 123 440 r zero; -#X obj 96 485 bang; -#X obj 36 482 bang; -#X obj 36 502 realtime; -#X floatatom 161 576 0 0 0; -#X obj 204 499 bang; -#X obj 161 499 bang; -#X obj 161 519 realtime; -#X floatatom 161 540 0 0 0; -#X obj 365 389 *; -#X obj 408 342 loadbang; -#X obj 365 408 exp; -#X obj 365 428 *; -#X floatatom 365 448 0 0 0; -#X obj 397 431 r zero; -#X text 79 277 Select a MIDI note here.; -#X obj 477 572 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 --1; -#X obj 477 12 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 --1; -#X text 496 123 The examples at the botton left are PD structures which -emulate the source code of the [mtof] object. In one case \, I have -used the [expr] object to perform the necessary calculation. In the -other case \, I used PD's Arithmetic objects to perform the calculation. -; -#X text 498 291 Secondly \, the incoming MIDI note number is translated -into a frequency value by the simple equation:; -#X text 494 330 (8.17579891564 * exp(0.0577622650 * MIDI_note)) = frequency -; -#X text 498 355 For curiosity's sake \, I included a timer to show -how much faster the [mtof] object is compared to the two alternative -methods.; -#X text 162 556 Arithmetic is __?__ milliseconds slower than [mtof]. -; -#X text 159 592 [expr] is __?__ milliseconds slower than [mtof].; -#X text 12 363 RESULT A; -#X text 123 476 RESULT B; -#X text 364 465 RESULT C; -#X msg 408 363 0.0577623; -#X msg 408 403 8.1758; -#X text 504 12 THE ALTERNATIVE EXPLAINED; -#X text 499 33 The [mtof] object is really just a function defined -in PD's source code - which is programmed in "C".; -#X text 497 67 As such \, it operates very quickly. If a similar function -were to be created using PD's arithmetic objects \, the process would -be quite a bit slower. How much slower?; -#X text 498 409 As well \, notice that RESULT C (the output from PD's -basic arithmetic objects) is not as accurate as the other two methods: -[mtof] and/or [expr]. This is because the message boxes and the [*] -object round off the operands because they cannot handle enough decimal -places.; -#X text 498 200 The first order of business performed by these examples -is the filtering out of all numbers less than -1500 and greater than -1499 (Just like the [mtof] source code). In other words \, "overflows -and underflows are clipped" as Miller Puckette stated in the original -documentation for this object.; -#X text 22 62 MIDI notes usually range between 0 and 127 from an incoming -MIDI controller. However \, in PD negative numbers to -1500 and positive -numbers to 1499 are also supported and decimal places can be used to -achive microtonal pitches.; -#X text 11 125 CONVENIENT? YES!; -#X connect 1 0 4 0; -#X connect 2 0 1 0; -#X connect 4 0 5 0; -#X connect 5 0 7 0; -#X connect 6 0 7 2; -#X connect 7 0 6 0; -#X connect 8 0 7 3; -#X connect 11 0 13 0; -#X connect 11 0 24 0; -#X connect 12 0 11 0; -#X connect 12 0 18 0; -#X connect 15 0 16 0; -#X connect 16 0 17 1; -#X connect 16 0 21 0; -#X connect 17 0 19 0; -#X connect 18 0 17 0; -#X connect 18 1 15 0; -#X connect 19 0 20 0; -#X connect 19 0 23 0; -#X connect 19 0 31 0; -#X connect 20 0 14 0; -#X connect 22 0 14 0; -#X connect 23 0 25 1; -#X connect 24 0 25 0; -#X connect 24 0 28 0; -#X connect 25 0 26 0; -#X connect 27 0 29 1; -#X connect 28 0 29 0; -#X connect 29 0 30 0; -#X connect 31 0 33 0; -#X connect 32 0 49 0; -#X connect 32 0 50 0; -#X connect 33 0 34 0; -#X connect 34 0 35 0; -#X connect 34 0 27 0; -#X connect 36 0 35 0; -#X connect 39 0 38 0; -#X connect 49 0 31 1; -#X connect 50 0 34 1; -#X restore 175 75 pd understanding_mtof; -#X text 47 105 -- Frequency to MIDI note number converter.; -#N canvas 118 -18 919 630 understanding_ftom 0; -#X floatatom 38 86 5 0 0; -#X floatatom 38 131 5 0 0; -#X text 12 215 HERE IS THE ALTERNATIVE; -#X floatatom 33 236 5 0 0; -#X floatatom 12 300 0 0 0; -#X obj 507 572 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 --1; -#X obj 507 12 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 --1; -#X text 9 318 RESULT A; -#X text 534 12 THE ALTERNATIVE EXPLAINED; -#X text 527 67 As such \, it operates very quickly. If a similar function -were to be created using PD's arithmetic objects \, the process would -be quite a bit slower. How much slower?; -#X text 12 68 CONVENIENT? YES!; -#X text 22 14 [ftom] will convert Wave/Signal Frequency to MIDI note -numbers. This object exists in PD for the sake of convenience and speed -of processing.; -#X text 78 85 Select a Frequency: (i.e. 440 hz is an "A" above middle -C); -#X obj 38 108 ftom; -#X obj 38 158 makenote 100 500; -#X obj 38 181 noteout; -#X text 76 232 Select a FREQUENCY here.; -#X obj 33 276 ftom; -#X text 529 33 The [ftom] object is really just a function defined -in PD's source code - which is programmed in "C".; -#X text 526 123 The examples at the botton left are PD structures which -emulate the source code of the [ftom] object. In one case \, I have -used the [expr] object to perform the necessary calculation. In the -other case \, I used PD's Arithmetic objects to perform the calculation. -; -#X obj 64 256 moses 0; -#X msg 64 277 -1500; -#X floatatom 64 408 0 0 0; -#X floatatom 114 346 0 0 0; -#X obj 114 313 * 17.3123; -#X obj 114 273 * 0.122312; -#X obj 114 293 log; -#X obj 101 385 expr (17.3123405046*log(.12231220585*$f1)); -#X text 64 423 RESULT B; -#X text 113 359 RESULT C; -#X obj 93 449 bang; -#X obj 33 446 bang; -#X obj 33 466 realtime; -#X floatatom 158 540 0 0 0; -#X obj 201 463 bang; -#X obj 158 463 bang; -#X obj 158 483 realtime; -#X floatatom 158 504 0 0 0; -#X text 189 520 Arithmetic is __?__ milliseconds slower than [mtof]. -; -#X text 156 556 [expr] is __?__ milliseconds slower than [mtof].; -#X text 528 200 Firstly \, the PD source code "clips" overflows and -underflows. This means simply that frequencies LESS THAN zero cannot -be tranlated into a MIDI note value - so they're ignored completely -and the object responds with "-1500".; -#X text 528 291 Secondly \, the incoming frequency is translated into -a MIDI note value by the simple equation:; -#X text 524 330 (17.3123405046 * log(0.12231220585 * Frequency)) = -MIDI_note; -#X text 528 355 For curiosity's sake \, I included a timer to show -how much faster the [ftom] object is compared to the two alternative -methods.; -#X text 528 409 As well \, notice that RESULT C (the output from PD's -basic arithmetic objects) is not as accurate as the other two methods: -[ftom] and/or [expr]. This is because the message boxes and the [*] -object round off the operands because they cannot handle enough decimal -places.; -#X text 145 119 Note that fractional values have no effect. MIDI controllers -only accept integers. Perhaps a subroutine could be designed to parse -the decimal places and manipulate the pitch bend controller to achieve -microtonal control?; -#X connect 0 0 13 0; -#X connect 1 0 14 0; -#X connect 3 0 17 0; -#X connect 3 0 20 0; -#X connect 4 0 31 0; -#X connect 6 0 5 0; -#X connect 13 0 1 0; -#X connect 14 0 15 0; -#X connect 14 1 15 1; -#X connect 17 0 4 0; -#X connect 20 0 21 0; -#X connect 20 1 25 0; -#X connect 20 1 27 0; -#X connect 21 0 22 0; -#X connect 21 0 23 0; -#X connect 22 0 30 0; -#X connect 23 0 34 0; -#X connect 24 0 23 0; -#X connect 25 0 26 0; -#X connect 26 0 24 0; -#X connect 27 0 22 0; -#X connect 30 0 32 1; -#X connect 31 0 32 0; -#X connect 31 0 35 0; -#X connect 32 0 33 0; -#X connect 34 0 36 1; -#X connect 35 0 36 0; -#X connect 36 0 37 0; -#X restore 174 121 pd understanding_ftom; -#X floatatom 12 37 0 0 0; -#X floatatom 12 207 0 0 0; -#X floatatom 12 252 0 0 0; -#X floatatom 12 163 0 0 0; -#X obj 12 184 dbtorms; -#X obj 12 231 rmstodb; -#N canvas 65 78 423 452 understanding_dbtorms 0; -#N canvas 0 0 452 302 What_is_a_decibel? 0; -#X text 24 94 The difficulty in measuring the volume of an instrument -however is caused by 'distance'. For example \, at one metre away from -a door bell \, the amplitude might be 70 Decibels \, while at 50 metres -away the same door bell is just a fraction of that amplitude.; -#X text 25 33 DECIBELS are units by which we measure amplitude. A human -voice is approximately 70 Decibels - a snare drum is approximately -120 Decibels - the threshold of pain for the human ear is approximately -110 Decibels (poor drummers!); -#X text 23 174 Literally \, a Decibel is one-tenth of a Bel. A Bel -\, according to a medical dictionary is approximately the threshold -of the human ear at 1000 hz. I know that this seems a little vague -\, and perhaps this isn't the best way to explain it - we might as -well be measuring "fortnights" and "bunches" and "Alens"! Anyways...I'm -not an acoustician.; -#X restore 39 24 pd What_is_a_decibel?; -#N canvas 0 0 440 242 What_does_RMS_mean? 0; -#X text 24 21 RMS is an acronym meaning "Root Mean Square".; -#X text 23 43 In the analog realm \, RMS is the result of an equation -performed on electrical flow. It is used to measure voltage or current. -It is important to note however \, that it does NOT measure "power". -It's also important to recognize that our ears perceive changes in -amplitude (decibels) more than we perceive changes in RMS levels.; -#X text 23 133 In the digital realm \, i.e. PD! \, RMS is better defined -as "a measurement of a signal taken by squaring data points along the -curve \, finding the mean \, and then determining the square root of -that mean value.; -#X restore 39 47 pd What_does_RMS_mean?; -#X text 19 80 [dbtorms] in PD performs the following equation to convert -the data: Note that incoming values less than 0 or greater than 485 -are considered overflow or underflow and are clipped/ignored.; -#X text 22 241 Example:; -#X floatatom 24 293 0 0 0; -#X obj 24 313 moses 0; -#X msg 24 333 0; -#X obj 86 352 min 485; -#X text 17 149 (exp((2.302585092994 * 0.05) * (db_value - 100)) = RMS -; -#X floatatom 24 397 0 0 0; -#X obj 151 310 dbtorms; -#X floatatom 151 330 0 0 0; -#X obj 86 372 expr (exp((2.302585092994*0.05)*($f1-100))); -#X text 18 178 On a scale of zero to 100 decibels \, the [dbtorms] -produces exponential values between 0 and 1; -#X msg 24 264 0; -#X msg 57 264 100; -#X obj 61 332 sel 0; -#X connect 4 0 5 0; -#X connect 4 0 10 0; -#X connect 5 0 6 0; -#X connect 5 1 16 0; -#X connect 6 0 9 0; -#X connect 7 0 12 0; -#X connect 10 0 11 0; -#X connect 12 0 9 0; -#X connect 14 0 4 0; -#X connect 15 0 4 0; -#X connect 16 0 6 0; -#X connect 16 1 7 0; -#X restore 155 203 pd understanding_dbtorms; -#X text 66 185 -- Decibels to RMS converter.; -#X text 66 232 -- RMS to Decibels converter.; -#X floatatom 12 333 0 0 0; -#X floatatom 12 378 0 0 0; -#X floatatom 12 289 0 0 0; -#X obj 12 310 dbtopow; -#X obj 12 357 powtodb; -#N canvas 349 60 423 452 understanding_rmstodb 0; -#N canvas 0 0 452 302 What_is_a_decibel? 0; -#X text 24 94 The difficulty in measuring the volume of an instrument -however is caused by 'distance'. For example \, at one metre away from -a door bell \, the amplitude might be 70 Decibels \, while at 50 metres -away the same door bell is just a fraction of that amplitude.; -#X text 25 33 DECIBELS are units by which we measure amplitude. A human -voice is approximately 70 Decibels - a snare drum is approximately -120 Decibels - the threshold of pain for the human ear is approximately -110 Decibels (poor drummers!); -#X text 23 174 Literally \, a Decibel is one-tenth of a Bel. A Bel -\, according to a medical dictionary is approximately the threshold -of the human ear at 1000 hz. I know that this seems a little vague -\, and perhaps this isn't the best way to explain it - we might as -well be measuring "fortnights" and "bunches" and "Alens"! Anyways...I'm -not an acoustician.; -#X restore 39 24 pd What_is_a_decibel?; -#N canvas 0 0 440 242 What_does_RMS_mean? 0; -#X text 24 21 RMS is an acronym meaning "Root Mean Square".; -#X text 23 43 In the analog realm \, RMS is the result of an equation -performed on electrical flow. It is used to measure voltage or current. -It is important to note however \, that it does NOT measure "power". -It's also important to recognize that our ears perceive changes in -amplitude (decibels) more than we perceive changes in RMS levels.; -#X text 23 133 In the digital realm \, i.e. PD! \, RMS is better defined -as "a measurement of a signal taken by squaring data points along the -curve \, finding the mean \, and then determining the square root of -that mean value.; -#X restore 39 47 pd What_does_RMS_mean?; -#X text 22 219 Example:; -#X floatatom 24 259 0 0 0; -#X floatatom 24 422 0 0 0; -#X floatatom 151 354 0 0 0; -#X msg 68 278 0; -#X text 19 80 [rmstodb] in PD performs the following equation to convert -the data: Note that incoming values less than 0 is consider underflow -and is clipped/ignored.; -#X text 18 178 On a scale of zero to 1 decibels \, the [rmstodb] produces -logarithmic values between 0 and 100 \, although higher values can -also be produced.; -#X obj 151 334 rmstodb; -#X obj 24 358 max 0; -#X obj 24 401 max 0; -#X obj 24 379 expr (100+((20/2.302585092994)*log($f1))); -#X text 18 136 (100 + ((20/2.302585092994) * log(RMS_value))); -#X obj 24 278 / 1000; -#X floatatom 24 310 0 0 0; -#X msg 101 278 1; -#X connect 3 0 14 0; -#X connect 6 0 15 0; -#X connect 9 0 5 0; -#X connect 10 0 12 0; -#X connect 11 0 4 0; -#X connect 12 0 11 0; -#X connect 14 0 15 0; -#X connect 15 0 9 0; -#X connect 15 0 10 0; -#X connect 16 0 15 0; -#X restore 153 249 pd understanding_rmstodb; -#X text 66 311 -- Decibels to power converter.; -#X text 66 358 -- power to Decibels converter.; -#X text 439 17 Please note: I have no idea why it's necessary for PD -to measure decibels \, rms \, or power. It seems to me that RMS and -Power are extremely important in the analog world (so that an engineer -doesn't blow up a transistor)...but in PD \, these things are just -numbers which have been abstracted from their original analog counterparts. -I would really appreciate if somebody could help me understand these -concepts and finish this document. Why are these objects present in -PD? WHY should they be used and what benefits to they produce in a -digital process?; -#N canvas 460 106 429 458 understanding_dbtopow 0; -#N canvas 0 0 452 302 What_is_a_decibel? 0; -#X text 24 94 The difficulty in measuring the volume of an instrument -however is caused by 'distance'. For example \, at one metre away from -a door bell \, the amplitude might be 70 Decibels \, while at 50 metres -away the same door bell is just a fraction of that amplitude.; -#X text 25 33 DECIBELS are units by which we measure amplitude. A human -voice is approximately 70 Decibels - a snare drum is approximately -120 Decibels - the threshold of pain for the human ear is approximately -110 Decibels (poor drummers!); -#X text 23 174 Literally \, a Decibel is one-tenth of a Bel. A Bel -\, according to a medical dictionary is approximately the threshold -of the human ear at 1000 hz. I know that this seems a little vague -\, and perhaps this isn't the best way to explain it - we might as -well be measuring "fortnights" and "bunches" and "Alens"! Anyways...I'm -not an acoustician.; -#X restore 39 24 pd What_is_a_decibel?; -#X floatatom 21 205 0 0 0; -#X floatatom 21 309 0 0 0; -#X floatatom 148 242 0 0 0; -#N canvas 0 0 442 244 What_does_power_mean? 0; -#X text 30 25 What does power mean? I really don't know? I can't determine -from my own research or from PD's documentation why or how this data -is used. All that I do know \, is that PD provides these objects for -a good reason -- I just don't know the reason.; -#X text 27 103 Having said that \, I would enjoy learning from somebody -who DOES know more about these objects and their usage. All that I -can offer is an explanation of the equation used to perform these conversions. -; -#X restore 39 47 pd What_does_power_mean?; -#X text 18 80 [dbtopow] in PD performs the following equation to convert -the data: Note that incoming values less than 0 or greater than 870 -are considered overflow or underflow and are clipped/ignored.; -#X obj 148 222 dbtopow; -#X obj 21 226 max 0; -#X obj 21 246 min 870; -#X text 17 149 exp((2.302585092994 * 0.1) * (db_value - 100)) = Power -; -#X obj 21 269 expr exp((2.302585092994*0.1)*($f1-100)); -#X connect 1 0 6 0; -#X connect 1 0 7 0; -#X connect 6 0 3 0; -#X connect 7 0 8 0; -#X connect 8 0 10 0; -#X connect 10 0 2 0; -#X restore 154 330 pd understanding_dbtopow; -#N canvas 348 60 429 458 understanding_powtodb 0; -#N canvas 0 0 452 302 What_is_a_decibel? 0; -#X text 24 94 The difficulty in measuring the volume of an instrument -however is caused by 'distance'. For example \, at one metre away from -a door bell \, the amplitude might be 70 Decibels \, while at 50 metres -away the same door bell is just a fraction of that amplitude.; -#X text 25 33 DECIBELS are units by which we measure amplitude. A human -voice is approximately 70 Decibels - a snare drum is approximately -120 Decibels - the threshold of pain for the human ear is approximately -110 Decibels (poor drummers!); -#X text 23 174 Literally \, a Decibel is one-tenth of a Bel. A Bel -\, according to a medical dictionary is approximately the threshold -of the human ear at 1000 hz. I know that this seems a little vague -\, and perhaps this isn't the best way to explain it - we might as -well be measuring "fortnights" and "bunches" and "Alens"! Anyways...I'm -not an acoustician.; -#X restore 39 24 pd What_is_a_decibel?; -#X text 22 241 Example:; -#X floatatom 22 261 0 0 0; -#X floatatom 22 363 0 0 0; -#X floatatom 149 298 0 0 0; -#N canvas 0 0 442 244 What_does_power_mean? 0; -#X text 30 25 What does power mean? I really don't know? I can't determine -from my own research or from PD's documentation why or how this data -is used. All that I do know \, is that PD provides these objects for -a good reason -- I just don't know the reason.; -#X text 27 103 Having said that \, I would enjoy learning from somebody -who DOES know more about these objects and their usage. All that I -can offer is an explanation of the equation used to perform these conversions. -; -#X restore 39 47 pd What_does_power_mean?; -#X text 17 81 [powtodb] in PD performs the following equation to convert -the data: Note that incoming values less than 0 are considered underflow -and are clipped/ignored.; -#X text 17 149 (100 + ((10/2.302585092994) * log(POWER_value))) = Debibels -; -#X obj 149 278 powtodb; -#X obj 22 281 max 0; -#X obj 22 321 expr (100 + ((10/2.302585092994)*log($f1))); -#X obj 22 342 max 0; -#X connect 2 0 8 0; -#X connect 2 0 9 0; -#X connect 8 0 4 0; -#X connect 9 0 10 0; -#X connect 10 0 11 0; -#X connect 11 0 3 0; -#X restore 154 377 pd understanding_powtodb; -#X text 13 415 RELATED OBJECTS; -#X obj 14 434 dbtopow~; -#X obj 68 434 dbtorms~; -#X obj 123 434 rmstodb~; -#X obj 178 434 powtodb~; -#X obj 233 434 mtof~; -#X obj 270 434 ftom~; -#X obj 14 459 expr; -#X obj 46 459 expr~; -#N canvas 0 0 452 302 other_objects_from_related_libraries 0; -#X obj 26 39 db2v; -#X obj 65 38 f2note; -#X obj 115 39 b2db; -#X obj 150 40 t3_sig~; -#X obj 205 40 m2f~; -#X obj 249 41 tmtof; -#X text 18 96 These objects are offered in PD only if you have downloaded -and properly installed the appropriate library. These objects may or -may not exist in a single library.; -#X text 17 145 The best places to find information about PD's libraries -is:; -#X text 14 167 www.puredata.org and click on "Downloads" then "Software" -; -#X text 15 183 or; -#X text 16 197 iem.kug.ac.at/pdb/; -#X restore 14 494 pd other_objects_from_related_libraries; -#X obj 90 459 rmstopow~; -#X obj 154 461 powtorms~; -#X obj 220 461 sig~; -#X obj 254 461 snapshot~; -#X text 14 550 This document was updated for PD version 0.35 test 29 -by Dave Sabine as part of a project called pddp proposed to build comprehensive -documentation for PD.; -#X connect 0 0 1 0; -#X connect 1 0 2 0; -#X connect 2 0 3 0; -#X connect 9 0 0 0; -#X connect 10 0 14 0; -#X connect 12 0 13 0; -#X connect 13 0 10 0; -#X connect 14 0 11 0; -#X connect 18 0 22 0; -#X connect 20 0 21 0; -#X connect 21 0 18 0; -#X connect 22 0 19 0; -- cgit v1.2.1