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Signal Modifiers: Sample Level Operators

fold

  ar      fold      asig, kincr

Description

Adds artificial foldover to an audio signal.

Performance

asig – input signal

kincr – amount of foldover expressed in multiple of sampling rate. Must be >= 1

fold is an opcode which creates artificial foldover. For example, when kincr is equal to 1 with sr=44100, no foldover is added. When kincr is set to 2, the foldover is equivalent to a downsampling to 22050, when it is set to 4, to 11025 etc. Fractional values of kincr are possible, allowing a continuous variation of foldover amount. This can be used for a wide range of special effects.

Example

instr	1
  kfreq   line      1,p3,200
  a1      oscili    10000, 100, 1
  k1      init      8.5
  a1      fold      a1, kfreq	
          out       a1		
endin

Author

Gabriel Maldonado
Italy
1999
New in Csound version 3.56


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Signal Modifiers: Sample Level Operators