Description

Allows a floating-point 14-bit MIDI signal scaled with a minimum and a maximum range.

Syntax

idest ctrl14 ichan, ictlno1, ictlno2, imin, imax [, ifn]

kdest ctrl14 ichan, ictlno1, ictlno2, kmin, kmax [, ifn]

Initialization

idest -- output signal

ichan -- MIDI channel number (1-16)

ictln1o -- most-significant byte controller number (0-127)

ictlno2 -- least-significant byte 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.

Performance

kdest -- output signal

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

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

ctrl14 (i- and k-rate 14 bit MIDI control) allows a floating-point 14-bit MIDI signal scaled with a minimum and a maximum range. The minimum and maximum values can be varied at k-rate. It can use optional interpolated table indexing. It requires two MIDI controllers as input.

ctrl14 differs from midic14 because it can be included in score-oriented instruments without Csound crashes. It needs the additional parameter ichan containing the MIDI channel of the controller. MIDI channel is the same for all the controllers used in a single ctrl14 opcode.

Examples

Here is an example of the ctrl14 opcode. It uses the file ctrl14.csd.

<CsoundSynthesizer>
<CsOptions>
; Select audio/midi flags here according to platform
-odac   -M0  ;;;RT audio I/O with MIDI in
;-iadc    ;;;uncomment -iadc if RT audio input is needed too
</CsOptions>
<CsInstruments>

sr = 44100
ksmps = 32
nchnls = 2
0dbfs = 1

instr 1	; expects MIDI controller input on channel 1
; run and move your midi controller to see result

imax = 1
imin = 0
ichan = 1 
ictlno = 7
 
	initc14	1, ictlno, ictlno+1, 1			; start at max. volume
kamp	ctrl14	ichan, ictlno, ictlno+1, imin, imax	; controller 7
	printk2	kamp
asig	oscil	kamp, 220, 1
	outs	asig, asig

endin

</CsInstruments>
<CsScore>
f 1 0 4096 10 1

i1 0 20

e
</CsScore>
</CsoundSynthesizer>

See Also

ctrl7, ctrl21, initc7, initc14, initc21, midic7, midic14, midic21

Credits

New in Csound version 3.47

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