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ampdb - convert from decibels (dB) to absolute amplitude


amp = ampdb(decibel)


ampdb returns a corresponding amplitude for a decibel value. 0-90 decibels approximately covers the 16-bit (0-32768) range.

NOTE: With the exception of boost, The RTcmix conversion functions follow a pattern. The command is divided into two halves, the one closest to the argument represent the format of the argument, and the one closest to the assignment represents the format to be returned. For example, "cpspch" is divided into "cps" and "pch". The argument is in oct.pc form ("pch") and the return value will be in cps ("cps").

The various format specifiers are:

   amp = absolute amplitude (16-bit, 0-32768)
   cps = cycles per second (Hz)
   db = decibels
   midi = midi note # (60 is middle C)
   oct = linear octaves (8.5 is halfway between octave 8.00 [middle C] and 9.00)
   pch = octave.pitch-class (oct.pc; 8.00 is middle C, 8.02 is D, 8.12 = 9.00 = C above middle C)
   let = note-letter specification ("C4" is middle C, "C#4" is C-sharp above middle C,
      "Gb5" is G-flat the octave above middle C octave. [see pitch-reps for more info])


Any number, floating point or integer, representing a decibel amplitude value


   amp = ampdb(decibel)

See Also

boost, dbamp, cpsmidi, cpslet, cpsoct, cpspch, midipch, octcps, octlet, octmidi, octpch, pchcps, pchlet, pchmidi, pchocti