99 lines
2.7 KiB
Text
99 lines
2.7 KiB
Text
|
class:: RecordBuf
|
||
|
|
summary:: Record or overdub into a Buffer.
|
||
|
|
related:: Classes/PlayBuf
|
||
|
|
categories:: UGens>Buffer
|
||
|
|
|
||
|
|
Description::
|
||
|
|
Records input into a link::Classes/Buffer::.
|
||
|
|
|
||
|
|
If recLevel is 1.0 and preLevel is 0.0 then the new input overwrites the
|
||
|
|
old data. If they are both 1.0 then the new data is added to the existing
|
||
|
|
data. (Any other settings are also valid.)
|
||
|
|
|
||
|
|
note:: The number of channels must be fixed for the SynthDef, it cannot vary depending on which buffer you use. ::
|
||
|
|
|
||
|
|
classmethods::
|
||
|
|
|
||
|
|
method::ar, kr
|
||
|
|
|
||
|
|
argument::inputArray
|
||
|
|
An Array of input channels.
|
||
|
|
|
||
|
|
argument::bufnum
|
||
|
|
The index of the buffer to use.
|
||
|
|
|
||
|
|
argument::offset
|
||
|
|
An offset into the buffer in samples.
|
||
|
|
|
||
|
|
argument::recLevel
|
||
|
|
Value to multiply by input before mixing with existing data.
|
||
|
|
|
||
|
|
argument::preLevel
|
||
|
|
Value to multiply to existing data in buffer before mixing with input.
|
||
|
|
|
||
|
|
argument::run
|
||
|
|
If zero, then recording stops, otherwise recording proceeds.
|
||
|
|
|
||
|
|
argument::loop
|
||
|
|
If zero then don't loop, otherwise do. This is modulatable.
|
||
|
|
|
||
|
|
argument::trigger
|
||
|
|
a trigger causes a jump to the start of the Buffer. A trigger
|
||
|
|
occurs when a signal changes from negative value to positive
|
||
|
|
value.
|
||
|
|
|
||
|
|
argument:: doneAction
|
||
|
|
an integer representing an action to be executed when the buffer is finished recording. This can be used to free the enclosing synth, etc. See link::Classes/Done:: for more detail. code::doneAction:: is only evaluated if loop is 0.
|
||
|
|
|
||
|
|
Examples::
|
||
|
|
|
||
|
|
code::
|
||
|
|
// Execute the following in order
|
||
|
|
(
|
||
|
|
// allocate a Buffer
|
||
|
|
s = Server.local;
|
||
|
|
b = Buffer.alloc(s, 44100 * 4.0, 1); // a four second 1 channel Buffer
|
||
|
|
)
|
||
|
|
|
||
|
|
// record for four seconds
|
||
|
|
(
|
||
|
|
SynthDef(\help_RecordBuf, { arg out = 0, bufnum = 0;
|
||
|
|
var formant;
|
||
|
|
formant = Formant.ar(XLine.kr(400,1000, 4), 2000, 800, 0.125);
|
||
|
|
RecordBuf.ar(formant, bufnum, doneAction: Done.freeSelf, loop: 0);
|
||
|
|
}).play(s,[\out, 0, \bufnum, b]);
|
||
|
|
)
|
||
|
|
|
||
|
|
// play it back
|
||
|
|
(
|
||
|
|
SynthDef(\help_RecordBuf_playback, { arg out = 0, bufnum = 0;
|
||
|
|
var playbuf;
|
||
|
|
playbuf = PlayBuf.ar(1,bufnum);
|
||
|
|
FreeSelfWhenDone.kr(playbuf); // frees the synth when the PlayBuf is finished
|
||
|
|
Out.ar(out, playbuf);
|
||
|
|
}).play(s, [\out, 0, \bufnum, b]);
|
||
|
|
)
|
||
|
|
|
||
|
|
// overdub
|
||
|
|
(
|
||
|
|
SynthDef(\help_RecordBuf_overdub, { arg out=0, bufnum=0;
|
||
|
|
var formant;
|
||
|
|
formant = Formant.ar(XLine.kr(200, 1000, 4), 2000, 800, 0.125);
|
||
|
|
// mixes equally with existing data
|
||
|
|
RecordBuf.ar(formant, bufnum, 0, 0.3, 0.5, doneAction: Done.freeSelf, loop: 0);
|
||
|
|
}).play(s, [\out, 0, \bufnum, b]);
|
||
|
|
)
|
||
|
|
|
||
|
|
// play back the overdubbed version
|
||
|
|
Synth.new(\help_RecordBuf_playback, [\out, 0, \bufnum, b], s);
|
||
|
|
|
||
|
|
// write the contents of the buffer to a file (see Buffer for more options)
|
||
|
|
(
|
||
|
|
b.write(sampleFormat: 'int16');
|
||
|
|
thisProcess.platform.recordingsDir +/+ "SC_" ++ Date.localtime.stamp ++ ".aiff"; // generated path
|
||
|
|
)
|
||
|
|
|
||
|
|
b.close; b.free; // cleanup
|
||
|
|
::
|
||
|
|
|