[Csnd] Gammatone filter?

[Csnd] Gammatone filter?

Date	2019-03-04 19:06
From	"Jeanette C."
Subject	[Csnd] Gammatone filter?
	Hey hey, does Csound directly implement a gammatone filter or is there a UDO implementing such a filter by calculating proper coefficients to an existing filter opcode? I'm currently delving into auditory filters. I don't know which slope would be preferred, haven't found anything on that yet on Wikipedia. Still searching... Best wishes and thanks for any info, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * GitHub: https://github.com/jeanette-c * Twitter: https://twitter.com/jeanette_c_s But tell me what happens when it stops? <3 (Britney Spears) 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	2019-03-05 16:00
From	john
Subject	Re: [Csnd] Gammatone filter?
	I think the smpleanswer is no to the first question. I do not know the answer to the second. I found some equations that suggest it _might_ be possible to force biquad to do it with ksms = 1 but I am ignorant about this area (as so many others). On Mon, 4 Mar 2019, Jeanette C. wrote: > Hey hey, > does Csound directly implement a gammatone filter or is there a UDO > implementing such a filter by calculating proper coefficients to an existing > filter opcode? > > I'm currently delving into auditory filters. I don't know which slope would > be preferred, haven't found anything on that yet on Wikipedia. Still > searching... > > Best wishes and thanks for any info, > > Jeanette > > -- > * Website: http://juliencoder.de - for summer is a state of sound > * SoundCloud: https://soundcloud.com/jeanette_c > * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g > * GitHub: https://github.com/jeanette-c > * Twitter: https://twitter.com/jeanette_c_s > > But tell me what happens when it stops? <3 > (Britney Spears) > > 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 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	2019-03-05 17:30
From	"Jeanette C."
Subject	Re: [Csnd] Gammatone filter?
	Mar 5 2019, john has written: > I think the smpleanswer is no to the first question. I do not know the > answer to the second. I found some equations that suggest it _might_ be > possible to force biquad to do it with ksms = 1 but I am ignorant about this > area (as so many others). Thanks John. At least you can rest easy in the knowledge that I can trump you in ignorance on that. :) Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * GitHub: https://github.com/jeanette-c * Twitter: https://twitter.com/jeanette_c_s Where are you now, what have you found Where is your heart, when I'm not around <3 (Britney Spears) 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	2019-03-05 17:51
From	Victor Lazzarini
Subject	Re: [Csnd] Gammatone filter?
	Once we have the filter equation, it should be easy enough to implement as an UDO or as an opcode. ======================== Prof. Victor Lazzarini Dean of Arts, Celtic Studies, and Philosophy, Maynooth University, Maynooth, Co Kildare, Ireland Tel: 00 353 7086936 Fax: 00 353 1 7086952 > On 5 Mar 2019, at 17:30, Jeanette C. wrote: > > Mar 5 2019, john has written: > >> I think the smpleanswer is no to the first question. I do not know the answer to the second. I found some equations that suggest it _might_ be possible to force biquad to do it with ksms = 1 but I am ignorant about this area (as so many others). > Thanks John. At least you can rest easy in the knowledge that I can > trump you in ignorance on that. :) > > Best wishes, > > Jeanette > > -- > * Website: http://juliencoder.de - for summer is a state of sound > * SoundCloud: https://soundcloud.com/jeanette_c > * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g > * GitHub: https://github.com/jeanette-c > * Twitter: https://twitter.com/jeanette_c_s > > Where are you now, what have you found > Where is your heart, when I'm not around <3 > (Britney Spears) > > 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 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	2019-03-05 17:58
From	John ff
Subject	Re: [Csnd] Gammatone filter?
	I have an algorithm but rather complex literally and looks slow. We will see..... ⁣Sent from TypeApp On Mar 5, 2019, 17:52, at 17:52, Victor Lazzarini wrote: >Once we have the filter equation, it should be easy enough to implement >as an UDO or as an opcode. >======================== >Prof. Victor Lazzarini >Dean of Arts, Celtic Studies, and Philosophy, >Maynooth University, >Maynooth, Co Kildare, Ireland >Tel: 00 353 7086936 >Fax: 00 353 1 7086952 > >> On 5 Mar 2019, at 17:30, Jeanette C. wrote: >> >> Mar 5 2019, john has written: >> >>> I think the smpleanswer is no to the first question. I do not know >the answer to the second. I found some equations that suggest it >_might_ be possible to force biquad to do it with ksms = 1 but I am >ignorant about this area (as so many others). >> Thanks John. At least you can rest easy in the knowledge that I can >> trump you in ignorance on that. :) >> >> Best wishes, >> >> Jeanette >> >> -- >> * Website: http://juliencoder.de - for summer is a state of sound >> * SoundCloud: https://soundcloud.com/jeanette_c >> * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g >> * GitHub: https://github.com/jeanette-c >> * Twitter: https://twitter.com/jeanette_c_s >> >> Where are you now, what have you found >> Where is your heart, when I'm not around <3 >> (Britney Spears) >> >> 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 >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 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	2019-03-05 18:16
From	"Jeanette C."
Subject	Re: [Csnd] Gammatone filter?
	Mar 5 2019, Victor Lazzarini has written: > Once we have the filter equation, it should be easy enough to implement as an UDO or as an opcode. Just chiming in. I have found a couple of sites with equations and even a C/Matlab based implementation: staffwww.dcs.shef.ac.uk/people/N.Ma/resources/gammatone/ https://github.com/mmmaat/libgammatone This looks like a good source, but all equations are images and I'm lost with the math to work outwards from the filter response as found on Wikipedia. Best wishes and thanks, Jeanette > ======================== > Prof. Victor Lazzarini > Dean of Arts, Celtic Studies, and Philosophy, > Maynooth University, > Maynooth, Co Kildare, Ireland > Tel: 00 353 7086936 > Fax: 00 353 1 7086952 > >> On 5 Mar 2019, at 17:30, Jeanette C. wrote: >> >> Mar 5 2019, john has written: >> >>> I think the smpleanswer is no to the first question. I do not know the answer to the second. I found some equations that suggest it _might_ be possible to force biquad to do it with ksms = 1 but I am ignorant about this area (as so many others). >> Thanks John. At least you can rest easy in the knowledge that I can >> trump you in ignorance on that. :) >> >> Best wishes, >> >> Jeanette >> >> -- >> * Website: http://juliencoder.de - for summer is a state of sound >> * SoundCloud: https://soundcloud.com/jeanette_c >> * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g >> * GitHub: https://github.com/jeanette-c >> * Twitter: https://twitter.com/jeanette_c_s >> >> Where are you now, what have you found >> Where is your heart, when I'm not around <3 >> (Britney Spears) >> >> 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 > 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 > -- * Website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * GitHub: https://github.com/jeanette-c * Twitter: https://twitter.com/jeanette_c_s Where are you now, what have you found Where is your heart, when I'm not around <3 (Britney Spears) 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