Subject: Re: psychoacoustically driven temporal approximation From: Graham Coleman <ravelite@xxxxxxxx> Date: Wed, 5 Mar 2014 11:10:05 +0100 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>--001a113a5a9eb80c2a04f3d93a8b Content-Type: text/plain; charset=ISO-8859-1 Hello Alberto, This brings to mind a page of Dan Ellis, on imposing cepstral features on white noise: http://labrosa.ee.columbia.edu/matlab/rastamat/ Graham Coleman On Tue, Mar 4, 2014 at 12:05 PM, JesterN Alberto Novello <jestern77@xxxxxxxx > wrote: > Hi all, > i'm trying to find a way to approximate the sample values of an audio > waveform in time domain. > I want a method that takes care of approximating perceptually-relevant > audio bands better than others. > Basically a spectral-weighted temporal approximation method. > In my head it's not clear how to connect frequency components to specific > samples in the time domain. > Any DSP wizard out there with a good idea/papers ? > Best regards > Alberto > > || | | ||| | || || | ||||| || | || | ||| | ||||| | | ||| | |||| | || > |||| > > ALBERTO NOVELLO / JesterN > site: jestern.com > shop: jestern.bandcamp.com > audio: soundcloud.com/jestern > video: vimeo.com/jestern > > || | | ||| | || || | ||||| || | || | ||| | ||||| | | ||| | |||| | || > |||| > > If for any reason you wish not to receive any more messages from this > email, please send an email with REMOVE as subject. I'm sorry for the > inconvenience. > Se per qualsiasi ragione non desideri ricevere piu' messaggi da questo > indirizzo, mandami un messaggio con REMOVE nel soggetto. Mi scuso per il > disturbo. > --001a113a5a9eb80c2a04f3d93a8b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div><div>Hello Alberto,<br><br></div>This brings to mind = a page of Dan Ellis, on imposing cepstral features on white noise:<br><a hr= ef=3D"http://labrosa.ee.columbia.edu/matlab/rastamat/">http://labrosa.ee.co= lumbia.edu/matlab/rastamat/</a><br> <br></div>Graham Coleman<br><div class=3D"gmail_extra"><br><div class=3D"gm= ail_quote">On Tue, Mar 4, 2014 at 12:05 PM, JesterN Alberto Novello <span d= ir=3D"ltr"><<a href=3D"mailto:jestern77@xxxxxxxx" target=3D"_blank">jest= ern77@xxxxxxxx</a>></span> wrote:<br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"><div><div style=3D"font-size:10pt;font-famil= y:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif"><d= iv> <span>Hi all,</span></div><div style=3D"font-style:normal;font-size:13px;ba= ckground-color:transparent;font-family:HelveticaNeue,'Helvetica Neue= 9;,Helvetica,Arial,'Lucida Grande',sans-serif"><span>i'm trying= to find a way to approximate the sample values of an audio waveform in tim= e domain.</span></div> <div style=3D"font-style:normal;font-size:13px;background-color:transparent= ;font-family:HelveticaNeue,'Helvetica Neue',Helvetica,Arial,'Lu= cida Grande',sans-serif"><span>I want a method that takes care of appro= ximating perceptually-relevant audio bands better than others.</span></div> <div style=3D"font-style:normal;font-size:13px;background-color:transparent= ;font-family:HelveticaNeue,'Helvetica Neue',Helvetica,Arial,'Lu= cida Grande',sans-serif"><span>Basically a spectral-weighted temporal a= pproximation method.=A0</span></div> <div style=3D"font-style:normal;font-size:13px;background-color:transparent= ;font-family:HelveticaNeue,'Helvetica Neue',Helvetica,Arial,'Lu= cida Grande',sans-serif"><span>In my head it's not clear how to con= nect frequency components=A0</span><span style=3D"background-color:transpar= ent">to specific samples in the time domain.=A0</span></div> <div style=3D"font-style:normal;font-size:13px;background-color:transparent= ;font-family:HelveticaNeue,'Helvetica Neue',Helvetica,Arial,'Lu= cida Grande',sans-serif"><span>Any DSP wizard out there with a good ide= a/papers ?</span></div> <div></div><div>Best regards</div><div>Alberto=A0</div><div><br></div><div = style=3D"font-style:normal;background-color:transparent;font-family:arial,h= elvetica,clean,sans-serif"><span style=3D"text-indent:0px;letter-spacing:no= rmal;font-variant:normal;font-style:normal;font-weight:normal;line-height:n= ormal;border-collapse:separate;text-transform:none;font-size:16px;white-spa= ce:normal;font-family:Helvetica;word-spacing:0px"><font face=3D"Arial"><fon= t color=3D"#999999"><font>|| | | ||| |=A0 ||=A0 || | ||||| || | || | ||| | = ||||| | | ||| | |||| |=A0 || ||||</font></font></font></span><span style=3D= "text-indent:0px;letter-spacing:normal;font-variant:normal;font-style:norma= l;font-weight:normal;line-height:normal;border-collapse:separate;text-trans= form:none;font-size:16px;white-space:normal;font-family:Helvetica;word-spac= ing:0px"><font face=3D"Arial"><font color=3D"#999999"><font><font><br> <span style=3D"font-size:10px">=A0</span><br></font></font></font></font></= span><span style=3D"font-weight:bold">ALBERTO NOVELLO / JesterN</span><br>s= ite: <span style=3D"font-weight:bold"><a href=3D"http://jestern.com" target= =3D"_blank">jestern.com</a></span><br> shop: <span style=3D"font-weight:bold"><a href=3D"http://jestern.bandcamp.c= om" target=3D"_blank">jestern.bandcamp.com</a></span><br>audio: <span style= =3D"font-weight:bold"><a href=3D"http://soundcloud.com/jestern" target=3D"_= blank">soundcloud.com/jestern</a></span><br> video: <span style=3D"font-weight:bold"><a href=3D"http://vimeo.com/jestern= " target=3D"_blank">vimeo.com/jestern</a></span><span style=3D"text-indent:= 0px;letter-spacing:normal;font-variant:normal;font-style:normal;font-weight= :normal;line-height:normal;border-collapse:separate;text-transform:none;fon= t-size:16px;white-space:normal;font-family:Helvetica;word-spacing:0px"><fon= t face=3D"Arial"><font color=3D"#999999"><span style=3D"text-indent:0px;let= ter-spacing:normal;font-variant:normal;font-style:normal;font-weight:normal= ;line-height:normal;border-collapse:separate;text-transform:none;font-size:= 16px;white-space:normal;font-family:Helvetica;word-spacing:0px"><font face= =3D"Arial"><font color=3D"#999999"><font><font><font><span style=3D"text-in= dent:0px;letter-spacing:normal;font-variant:normal;font-style:normal;font-w= eight:normal;line-height:normal;border-collapse:separate;text-transform:non= e;font-size:16px;white-space:normal;font-family:Helvetica;word-spacing:0px"= ><font face=3D"Arial"><font color=3D"#999999"><font><br> <span style=3D"font-size:10px">=A0</span><br>|| | | ||| |=A0 ||=A0 || | |||= || || | || | ||| | ||||| | | ||| | |||| |=A0 || ||||</font></font></font></= span><span style=3D"text-indent:0px;letter-spacing:normal;font-variant:norm= al;font-style:normal;font-weight:normal;line-height:normal;border-collapse:= separate;text-transform:none;font-size:16px;white-space:normal;font-family:= Helvetica;word-spacing:0px"></span></font></font></font></font></font></spa= n></font></font></span><span style=3D"text-indent:0px;letter-spacing:normal= ;font-variant:normal;font-style:normal;font-weight:normal;line-height:norma= l;border-collapse:separate;text-transform:none;font-size:16px;white-space:n= ormal;font-family:Helvetica;word-spacing:0px"><font face=3D"Arial"><font co= lor=3D"#AAAAAA"><br> <br></font></font></span></div><div style=3D"font-style:normal;background-c= olor:transparent;font-family:arial,helvetica,clean,sans-serif"><span style= =3D"font-size:10px">If for any reason you wish not to receive any more mess= ages from this email, please send an email with REMOVE as subject. I'm = sorry for the inconvenience. <br> </span></div><div style=3D"font-style:normal;font-size:13px;background-colo= r:transparent;font-family:arial,helvetica,clean,sans-serif"><span style=3D"= font-size:x-small">Se per qualsiasi ragione non desideri ricevere piu' = messaggi da questo indirizzo, mandami un messaggio con REMOVE nel soggetto.= Mi scuso per il disturbo.</span><br> </div></div></div></blockquote></div><br></div></div> --001a113a5a9eb80c2a04f3d93a8b--