Hi!

I am using JACK on Linux with Renoise (tracker) as an audio source.  My immediate goal was to use reverbsc in csound to add stereo reverb to tracks in Renoise, but I simplified my use case when I noticed some extra noise.  I'm following an example by Iain McCurdy:

http://iainmccurdy.org/CsoundRealtimeExamples/LiveAudioIn/ins.csd

It sounds like perhaps the kind of noise you'd get treating interlaced two-channel audio as mono, but I either am too new to csound to notice my mistake, or else I'm using the opcodes correctly.  Earlier I was experiencing the same problem when I was using *ins* instead of *inch*.  Here's a table of what happens in different circumstances:

; into csound from renoise out to audio - unwanted noise
; into csound from wav out to audio     - unwanted noise
; into csound from wav out to wav       - joy
; into csound from renoise out to wav   - unwanted noise
; synthesis in csound to wav  - joy
; synthesis in csound to audio - joy

Here is what I'm trying to do:



--0dbfs=1 -+rtaudio=jack -r 96000 -k 24000 -3 -iadc -odac -b32 -dm0



nchnls	= 	2

instr	1
	ainL, ainR	inch 1, 2
;	ainL, ainR	diskin2 "neutron.wav", 0.5, 0, 1
	outch	1, ainL, 2, ainR
;	fout "ins-min.wav", 8, ainL, ainR
endin




i 1 0 3600




Here's what it sounds like when noisy:
http://noserose.net/ins-min.wav

Here's what it sounds like when rendered from Renoise:
http://noserose.net/ins-ref.wav

(The two are slightly different parts of the same track but reflect the difference in sound between what I'm expecting and what I'm hearing.)

Thanks much!

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Try reducing your kr from 24000. It may be too high. It's easier not to set it at all and
ser ksmps instead. So try removing -k 24000 and -r 96000 and then adding this
to the Csound code

sr=96000
ksmps=32
nchnls=2

...

Victor Lazzarini
Dean of Arts, Celtic Studies, and Philosophy
Maynooth University
Ireland

> On 23 Dec 2018, at 03:26, Ed Cashin  wrote:
> 
> Hi!
> 
> I am using JACK on Linux with Renoise (tracker) as an audio source.  My immediate goal was to use reverbsc in csound to add stereo reverb to tracks in Renoise, but I simplified my use case when I noticed some extra noise.  I'm following an example by Iain McCurdy:
> 
> http://iainmccurdy.org/CsoundRealtimeExamples/LiveAudioIn/ins.csd
> 
> It sounds like perhaps the kind of noise you'd get treating interlaced two-channel audio as mono, but I either am too new to csound to notice my mistake, or else I'm using the opcodes correctly.  Earlier I was experiencing the same problem when I was using *ins* instead of *inch*.  Here's a table of what happens in different circumstances:
> 
> ; into csound from renoise out to audio - unwanted noise
> ; into csound from wav out to audio     - unwanted noise
> ; into csound from wav out to wav       - joy
> ; into csound from renoise out to wav   - unwanted noise
> ; synthesis in csound to wav  - joy
> ; synthesis in csound to audio - joy
> 
> Here is what I'm trying to do:
> 
> 
> 
> --0dbfs=1 -+rtaudio=jack -r 96000 -k 24000 -3 -iadc -odac -b32 -dm0
> 
> 
> 
> nchnls    =    2
> 
> instr    1
>    ainL, ainR    inch 1, 2
> ;    ainL, ainR    diskin2 "neutron.wav", 0.5, 0, 1
>    outch    1, ainL, 2, ainR
> ;    fout "ins-min.wav", 8, ainL, ainR
> endin
> 
> 
> 
> 
> i 1 0 3600
> 
> 
> 
> 
> Here's what it sounds like when noisy:
> http://noserose.net/ins-min.wav
> 
> Here's what it sounds like when rendered from Renoise:
> http://noserose.net/ins-ref.wav
> 
> (The two are slightly different parts of the same track but reflect the difference in sound between what I'm expecting and what I'm hearing.)
> 
> Thanks much!
> 
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>        https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here

Csound mailing list
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Send bugs reports to
        https://github.com/csound/csound/issues
Discussions of bugs and features can be posted here