PRINT

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print, display, dispfft

          print     iarg[, iarg,...]
          display   xsig, iprd[, iwtflg]
          dispfft   xsig, iprd, iwsiz[, iwtyp][, idbouti][, iwtflg]

DESCRIPTION

These units will print orchestra Init-values, or produce graphic display of orchestra control signals and audio signals. Uses X11 windows if enabled, else (or if -g flag is set) displays are approximated in ascii characters.

INITlALIZATION

iprd - the period of display in seconds.

iwsiz - size of the input window in samples. A window of iwsiz points will produce a Fourier transform of iwsiz/2 points, spread linearly in frequency from 0 to sr/2. iwsiz must be a power of 2, with a minimum of of 16 and a maximum of 4096. The windows are permitted to overlap.

iwtyp (optional) - window type. 0 = rectangular, 1 = hanning. The default value is 0 (rectangular).

idbout (optional) - units of output for the Fourier coefficients. 0 = magnitude, 1 = decibels. The default is 0 (magnitude).

iwtflg (optional) - wait flag. If non-zero, each display is held until released by the user. The default value is 0 (no wait).

PERFORMANCE

print - print the current value of the I-time arguments (or expressions) iarg at every I-pass through the instrument.

display - display the audio or control signal xsig every iprd seconds, as an amplitude vs. time graph.

dispfft - display the Fourier Transform of an audio or control signal (asig or ksig) every iprd seconds using the Fast Fourier Transform method.

EXAMPLE:

  k1 envlpx   l, .03, p3, .05, l, .5, .0l ; generate a note envelope 
     display  k1, p3 ; and display entire shape

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