ftcps — Returns the base frequency of a stored function table in Hz.
Returns the base frequency of stored function table, number x. ftcps is designed for tables storing audio waveforms read from files (see GEN01).
ftcps returns -1 in case of an error (no base frequency set in table or non-existent table).
Here is an example of the ftcps opcode.
Example 330. Example of the ftcps 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 ftlen.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 ; Print out the base frequency of Table #1. ; if it has been set in the original file. icps = ftcps(1) print icps endin </CsInstruments> <CsScore> ; Table #1: Use an audio file, Csound will determine its base frequency, if set. f 1 0 0 1 "sample.wav" 0 0 0 ; Play Instrument #1 for 1 second. i 1 0 1 e </CsScore> </CsoundSynthesizer>