dbamp — Returns the decibel equivalent of the raw amplitude x.
Here is an example of the dbamp opcode. Play dbamp.csd
Example 207. Example of the dbamp opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;RT audio out ;-iadc ;;;uncomment -iadc if RT audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o dbamp.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 instr 1 iamp = p4 idb = dbamp(iamp) print idb asig vco2 iamp, 110 ;sawtooth outs asig, asig endin </CsInstruments> <CsScore> i 1 0 1 100 i 1 + 1 1000 i 1 + 1 10000 i 1 + 1 20000 e </CsScore> </CsoundSynthesizer>
Its output should include lines like this:
instr 1: idb = 40.000 instr 1: idb = 60 instr 1: idb = 80 instr 1: idb = 86.021