diff options
Diffstat (limited to 'pd/doc/5.reference')
| -rw-r--r-- | pd/doc/5.reference/acoustics-help.pd | 53 |
1 files changed, 30 insertions, 23 deletions
diff --git a/pd/doc/5.reference/acoustics-help.pd b/pd/doc/5.reference/acoustics-help.pd index 2a46f589..de3e6f22 100644 --- a/pd/doc/5.reference/acoustics-help.pd +++ b/pd/doc/5.reference/acoustics-help.pd @@ -1,40 +1,47 @@ -#N canvas 163 25 582 408 12; -#X obj 15 269 ftom; +#N canvas 0 466 571 483 12; +#X obj 32 393 ftom; #X obj 8 10 mtof; -#X obj 15 217 mtof; -#X floatatom 15 189 0 0 0; -#X floatatom 15 244 0 0 0; +#X obj 32 341 mtof; +#X floatatom 32 313 0 0 0 0 - - -; +#X floatatom 32 368 0 0 0 0 - - -; #X obj 64 10 ftom; -#X floatatom 15 293 0 0 0; +#X floatatom 32 417 0 0 0 0 - - -; #X obj 120 11 dbtorms; #X obj 196 11 rmstodb; #X obj 275 11 dbtopow; #X obj 352 11 powtodb; +#X floatatom 164 309 0 0 0 0 - - -; +#X floatatom 164 364 0 0 0 0 - - -; +#X floatatom 164 413 0 0 0 0 - - -; +#X obj 164 337 dbtorms; +#X obj 164 389 rmstodb; +#X floatatom 278 310 0 0 0 0 - - -; +#X floatatom 278 365 0 0 0 0 - - -; +#X floatatom 278 414 0 0 0 0 - - -; +#X obj 278 338 dbtopow; +#X obj 278 390 powtodb; +#X text 23 245 Finally \, dbtopow and powtodb convert decibels to and +from power units \, equal to the square of the "RMS" amplitude.; +#X text 304 448 updated for pd version 0.40.; #X text 21 53 The mtof object transposes a midi value into a frequency in Hertz \, so that "69" goes to "440". You can specify microtonal pitches as in "69.5" (a quarter tone higher than 69). Ftom does the -reverse.; -#X floatatom 147 185 0 0 0; -#X floatatom 147 240 0 0 0; -#X floatatom 147 289 0 0 0; -#X obj 147 213 dbtorms; -#X obj 147 265 rmstodb; -#X floatatom 261 186 0 0 0; -#X floatatom 261 241 0 0 0; -#X floatatom 261 290 0 0 0; -#X obj 261 214 dbtopow; -#X obj 261 266 powtodb; -#X text 27 336 Overflows and underflows are clipped.; -#X text 300 376 updated for pd version 0.33; +reverse. A frequency of zero Hertz is given a MIDI value of -1500 (strictly +speaking \, it is negative infinity.); +#X text 22 149 The dbtorms and rmstodb objects convert from decibels +to linear ("RMS") amplitude \, so that 100 dB corresponds to an "RMS" +of 1 Zero amplitude (strictly speaking \, minus infinity dB) is clipped +to zero dB \, and zero dB \, which should correspond to 1e-04 in "RMS" +\, is instead rounded down to zero.; #X connect 0 0 6 0; #X connect 2 0 4 0; #X connect 3 0 2 0; #X connect 4 0 0 0; +#X connect 11 0 14 0; #X connect 12 0 15 0; -#X connect 13 0 16 0; +#X connect 14 0 12 0; #X connect 15 0 13 0; -#X connect 16 0 14 0; +#X connect 16 0 19 0; #X connect 17 0 20 0; -#X connect 18 0 21 0; +#X connect 19 0 17 0; #X connect 20 0 18 0; -#X connect 21 0 19 0; |