Hello All,
i am building a personal looper that should record some audio samples 
in real time, using a MIDI pedal controller. The csd is posted bottom.
My idea is: build some table with max duration for loop, then
when asked by MIDI start to record audio for entire duration 
unless another MIDI message (same as previous) that should stop recording 
and start to play the recorded loop with proper duration.
But seems to work only for entire duration of table. When i stop 
the recording in middle time i have the loop starting only at the end 
of entire duration, and the first loop play right but only the first time,
then it play 
as long as the entire table. I guess because the parameter gkDur used 
for set the end of loop to play it will be overwritten.
If someone please could take a look or give me some hits 
i will be really grateful although not economically.

Thanks,
ciao,
francesco.




-Wfd -+rtaudio=alsa -i adc -o dac -Ma


sr = 48000
ksmps = 32
nchnls = 2
0dbfs = 1

gaudio init 0
gaL init 0
gaR init 0

massign 0,0

giMaxDurataLoop init 10
gkDur init giMaxDurataLoop

; 10 tables each one for 10 seconds mono audio
gift01 ftgen 1, 0, -(giMaxDurataLoop*sr), 2, 0
gift02 ftgen 2, 0, -(giMaxDurataLoop*sr), 2, 0
gift03 ftgen 3, 0, -(giMaxDurataLoop*sr), 2, 0
gift04 ftgen 4, 0, -(giMaxDurataLoop*sr), 2, 0
gift05 ftgen 5, 0, -(giMaxDurataLoop*sr), 2, 0
gift06 ftgen 6, 0, -(giMaxDurataLoop*sr), 2, 0
gift07 ftgen 7, 0, -(giMaxDurataLoop*sr), 2, 0
gift08 ftgen 8, 0, -(giMaxDurataLoop*sr), 2, 0
gift09 ftgen 9, 0, -(giMaxDurataLoop*sr), 2, 0
gift10 ftgen 10, 0, -(giMaxDurataLoop*sr), 2, 0


; PEDALIERA MIDI
instr 2, Controller

gkVol ctrl7 1, 7, 0, 127
gkVol = gkVol/127

kstatus, kchan, kdata1, kdata2 midiin
ktrigger changed kstatus, kchan, kdata1, kdata2

if (ktrigger==1) && (kdata1!=7) then

    ; Start time of instr recording
    gkTime0 timeinsts

    kAct active 12+kdata1/100
    printk2 kAct

    if kAct>1 then
        ; Stop recording the loop before end of table
        ; End time of instr recording, and starting of loop player
        gkTimeEnd timeinsts
        gkDur = gkTimeEnd - gkTimeEnd

        prints "\nINSTR CONTROL\n"
        printk2 gkDur

        turnoff2 12+kdata1/100, 4, 0
        schedkwhen ktrigger, 0, 0, 20+kdata1/100, 0, -1, kdata1+1
    else
        ; Start recording a loop 
        schedkwhen ktrigger, 0, 1, 12+kdata1/100, 0, giMaxDurataLoop,
kdata1+1
        schedkwhen ktrigger, 0, 0, 20+kdata1/100, giMaxDurataLoop, -1,
kdata1+1
    endif
endif
endin

;  GUITAR INS
instr 10, Guitar
aL, aR ins
ilev = p4
outs aL * ilev, aR * ilev
gaudio = gaudio + (aL+aR)*0.7
endin

instr 12, LoopRecorder

kEnv linseg 0, 0.01, 1, p3-0.02, 1, 0.01, 0
audio = gaudio * kEnv
gaudio = 0
andx line 0, p3, sr*p3
tablew audio, andx, p4
endin

instr 20, LoopPlayer

ift = p4
;aout poscil 1, sr/ftlen(ift), ift
;ares table andx, ifn

kamp = 1
kpitch = 1
istart = 0

prints "\nINSTR PLAYER\n"
idur = i(gkDur)
print idur
ifade = 0

aout flooper kamp, kpitch, istart, idur, ifade, ift

;aout flooper2 kamp, kpitch, kstart, idur, kfade, ift
;      [, istart, imode, ifenv, iskip]

iPan = 0.5
aL, aR pan2, aout, iPan
gaL = gaL + aL
gaR = gaR + aR
endin

instr 100
outs gaL, gaR
gaL = 0
gaR = 0
endin



f 0 360

; CONTROLLER
i 2 0 -1

; INS
; p4 vol
i 10 0 -1 1

; OUTS
i 100 0 -1








--
View this message in context: http://csound.1045644.n5.nabble.com/Audio-looper-some-help-tp5720743.html
Sent from the Csound - General mailing list archive at Nabble.com.

Try that attached file. It uses key strokes to start recording a loop,
and another key stroke to start playback. It also has a spectral
freeze that I was using too, but doesn't need to be there. It could
easily be changed so that it works via midi. In fact, the last time it
was used in performance the double bass player was controlling the
loops with a midi pedal board.

Another aiea would be to use phasor as a pointer into the table.

P

On 5 March 2013 11:03, Rory Walsh  wrote:
> Try that attached file. It uses key strokes to start recording a loop,
> and another key stroke to start playback. It also has a spectral
> freeze that I was using too, but doesn't need to be there. It could
> easily be changed so that it works via midi. In fact, the last time it
> was used in performance the double bass player was controlling the
> loops with a midi pedal board.
>
> Send bugs reports to the Sourceforge bug tracker
>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>