dbamp
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dbamp

dbamp — Returns the decibel equivalent of the raw amplitude x.

Description

Returns the decibel equivalent of the raw amplitude x.

Syntax

dbamp(x)  (init-rate or control-rate args only)

Examples

Here is an example of the dbamp opcode. It uses the file dbamp.csd.

Example 100. 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
; Audio out   Audio in
-odac           -iadc    ;;;RT audio I/O
; For Non-realtime ouput leave only the line below:
; -o dbamp.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

; Initialize the global variables.
sr = 44100
kr = 4410
ksmps = 10
nchnls = 1

; Instrument #1.
instr 1
  iamp = 30000
  idb = dbamp(iamp)

  print idb
endin


</CsInstruments>
<CsScore>

; Play Instrument #1 for one second.
i 1 0 1
e


</CsScore>
</CsoundSynthesizer>


Its output should include lines like this: 

instr 1:  idb = 89.542

See Also

ampdb, ampdbfs, dbfsamp

Credits

Example written by Kevin Conder.

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