lposcilsa — Read stereo sampled sound from a table with looping and high precision.


lposcilsa reads stereo sampled sound from a table with looping and high precision.


ar1, ar2 lposcilsa aamp, kfreqratio, kloop, kend, ift [,iphs] 


ift -- function table number

iphs -- initial phase (in samples)


ar1, ar2 -- output signal

aamp -- amplitude

kfreqratio -- multiply factor of table frequency (for example: 1 = original frequency, 1.5 = a fifth up , .5 = an octave down)

kloop -- start loop point (in samples)

kend -- end loop point (in samples)

lposcilsa is the same as lposcila, but works with stereo files loaded with GEN01.


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

Example 570. Example of the lposcilsa opcode.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

; Select audio/midi flags here according to platform
-odac      ;;;realtime audio out
;-iadc    ;;;uncomment -iadc if realtime audio input is needed too
; For Non-realtime ouput leave only the line below:
; -o lposcilsa.wav -W ;;; for file output any platform

; additions by Menno Knevel 2022

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

instr 1

kcps  = 1.3					;a 3th up
kloop = 0					;loop start time in samples
kend  = p4					;loop end time in samples

aenv expsega 0.01, 0.1, .8, 1, .3, 1.1, .42	;envelope with fast and short segment
aL, aR lposcilsa aenv, kcps, kloop, kend, 1	;use it for amplitude
     outs aL, aR

; table size of stereo file is deferred,
; and format taken from the soundfile header.
f 1 0 0 1 "drumsSlp.wav" 0 0 0

i 1 0 5 45000
i 1 6 3 15000

See also

Sample Playback


Author: Gabriel Maldonado

New in version 5.06