tonex — Emulates a stack of filters using the tone opcode.
tonex is equivalent to a filter consisting of more layers of tone with the same arguments, serially connected. Using a stack of a larger number of filters allows a sharper cutoff. They are faster than using a larger number instances in a Csound orchestra of the old opcodes, because only one initialization and k- cycle are needed at time and the audio loop falls entirely inside the cache memory of processor.
inumlayer (optional) -- number of elements in the filter stack. Default value is 4.
iskip (optional, default=0) -- initial disposition of internal data space. Since filtering incorporates a feedback loop of previous output, the initial status of the storage space used is significant. A zero value will clear the space; a non-zero value will allow previous information to remain. The default value is 0.
asig -- input signal
khp/ahp -- the response curve's half-power point. Half power is defined as peak power / root 2.
Here is an example of the tonex opcode. It uses the file tonex.csd.
Example 1109. Example of the tonex 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 ;;;realtime audio out ;-iadc ;;;uncomment -iadc if realtime audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o tonex.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 0dbfs = 1 nchnls = 2 instr 1 asig diskin2 "beats.wav", 1 outs asig, asig endin instr 2 kton line 10000, p3, 0 ;all the way down to 0 Hz asig diskin2 "beats.wav", 1 asig tonex asig, kton, 8 ;8 filters outs asig, asig endin </CsInstruments> <CsScore> i 1 0 2 i 2 3 2 e </CsScore> </CsoundSynthesizer>