Returns the amplitude equivalent of the decibel value x. Thus:
60 dB = 1000
66 dB = 1995.262
72 dB = 3891.07
78 dB = 7943.279
84 dB = 15848.926
90 dB = 31622.764
Here is an example of the ampdb opcode. It uses the files ampdb.orc and ampdb.sco.
Example 30. Example of the ampdb opcode.
/* ampdb.orc */ ; Initialize the global variables. sr = 44100 kr = 4410 ksmps = 10 nchnls = 1 ; Instrument #1. instr 1 idb = 90 iamp = ampdb(idb) print iamp endin /* ampdb.orc */
/* ampdb.sco */ ; Play Instrument #1 for one second. i 1 0 1 e /* ampdb.sco */
Its output should include lines like:
instr 1: iamp = 31622.764