[Csnd] High pitch when using wah wah effect (aliasing perhaps)?

Date	2018-11-21 11:03
From	fauveboy
Subject	[Csnd] High pitch when using wah wah effect (aliasing perhaps)?
	I've link a wetransfer which holds the code as the fie is quite big ( i hope thats okay). https://we.tl/t-3GazLWZD9K in side CHMA/ theres a directory called CHMACsd and its when I run the programme: $CHMABass1a.csd there a high pitch occurs. im not sure how to avoid it ? I was hoping someone called to trial the programme and make any necessary suggestions. Many thanks! J -- Sent from: http://csound.1045644.n5.nabble.com/Csound-General-f1093014.html 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

Date	2018-11-21 11:42
From	Oeyvind Brandtsegg
Subject	Re: [Csnd] High pitch when using wah wah effect (aliasing perhaps)?
	Hi, The code is quite complex, so the cuase of the artifact is not immediately apparent (for me at least). One approach in such cases is to try to minimize the example, to include only components that are needed to provoke the error to appear. The process of "boiling down" and reducing the code in this manner also often will reveal the error to you. An alternative approach is to make an audio recording of the artifact, perhaps some of us will be able to identify the sound of it, and in this manner narrow down the search. best Oeyvind Den ons. 21. nov. 2018 kl. 12:03 skrev fauveboy <joel.ramsbottom@hotmail.co.uk>: I've link a wetransfer which holds the code as the fie is quite big ( i hope thats okay). https://we.tl/t-3GazLWZD9K in side CHMA/ theres a directory called CHMACsd and its when I run the programme: $CHMABass1a.csd there a high pitch occurs. im not sure how to avoid it ? I was hoping someone called to trial the programme and make any necessary suggestions. Many thanks! J -- Sent from: http://csound.1045644.n5.nabble.com/Csound-General-f1093014.html 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 -- Oeyvind Brandtsegg Professor of Music Technology NTNU 7491 Trondheim Norway Cell: +47 92 203 205 http://www.partikkelaudio.com/ http://crossadaptive.hf.ntnu.no http://gdsp.hf.ntnu.no/ http://soundcloud.com/brandtsegg http://flyndresang.no/ http://soundcloud.com/t-emp 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

Date	2018-11-21 12:40
From	fauveboy
Subject	Re: [Csnd] High pitch when using wah wah effect (aliasing perhaps)?
	thanks Ill try reduce the problem and load it again in the mean time this is the audio with the artifact: bass.wav -- Sent from: http://csound.1045644.n5.nabble.com/Csound-General-f1093014.html 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

Date	2018-11-21 19:29
From	Oeyvind Brandtsegg
Subject	Re: [Csnd] High pitch when using wah wah effect (aliasing perhaps)?
	I took a look at the file, and see that there is a significant DC offset building up, together with the ringing sound. My best guess is that perhaps your parameter setting for a filter i outside the expected range so that it creates these odd artifacts. If the artifact is only happening when you are using a specific filter, then try to make a csd with only that part of the code and see if it has the same artifact. Den ons. 21. nov. 2018 kl. 13:40 skrev fauveboy <joel.ramsbottom@hotmail.co.uk>: thanks Ill try reduce the problem and load it again in the mean time this is the audio with the artifact: bass.wav <http://csound.1045644.n5.nabble.com/file/t339654/bass.wav> -- Sent from: http://csound.1045644.n5.nabble.com/Csound-General-f1093014.html 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 -- Oeyvind Brandtsegg Professor of Music Technology NTNU 7491 Trondheim Norway Cell: +47 92 203 205 http://www.partikkelaudio.com/ http://crossadaptive.hf.ntnu.no http://gdsp.hf.ntnu.no/ http://soundcloud.com/brandtsegg http://flyndresang.no/ http://soundcloud.com/t-emp 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