ctrl7
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## ctrl7

ctrl7 — Allows a floating-point 7-bit MIDI signal scaled with a minimum and a maximum range.

## Description

Allows a floating-point 7-bit MIDI signal scaled with a minimum and a maximum range.

## Syntax

    idest ctrl7 ichan, ictlno, imin, imax [, ifn]

    kdest ctrl7 ichan, ictlno, kmin, kmax [, ifn]

    adest ctrl7 ichan, ictlno, kmin, kmax [, ifn] [, icutoff]

## Initialization

idest -- output signal

ichan -- MIDI channel (1-16)

ictlno -- MIDI controller number (0-127)

imin -- user-defined minimum floating-point value of output

imax -- user-defined maximum floating-point value of output

ifn (optional) -- table to be read when indexing is required. Table must be normalized. Output is scaled according to imax and imin val.

icutoff (optional) -- low pass filter cut-off frequency for smoothing a-rate output.

## Performance

kdest, adest -- output signal

kmin -- user-defined minimum floating-point value of output

kmax -- user-defined maximum floating-point value of output

ctrl7 (i- and k-rate 7 bit MIDI control) allows a floating-point 7-bit MIDI signal scaled with a minimum and a maximum range. It also allows optional non-interpolated table indexing. Minimum and maximum values can be varied at k-rate.

ctrl7 differs from midic7 because it can be included in score-oriented instruments without Csound crashes. It also needs the additional parameter ichan containing the MIDI channel of the controller.

The a-rate version of ctrl7 outputs an a-rate variable, which is low-pass filtered (smoothed). It contains an optional icutoff parameter, to set the cutoff frecuency for the low-pass filter. The default is 5.

## See Also

ctrl14, ctrl21, initc7, initc14, initc21, midic7, midic14, midic21

## Credits

Author: Gabriel Maldonado
Italy

New in Csound version 3.47

Thanks goes to Rasmus Ekman for pointing out the correct MIDI channel and controller number ranges.

The a-rate version of ctrl7 was added in version 5.06

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