A friend came across some software for changing playback speed without distorting pitch. I know I've seen a FAQ that covers the application. Where should I refer him. He's a musician with a BSEE.
Pitch shifting and playyback speed changes FAQ
Started by ●April 19, 2007
Reply by ●April 19, 20072007-04-19
Richard Owlett <rowlett@atlascomm.net> writes:> A friend came across some software for changing playback speed without > distorting pitch. I know I've seen a FAQ that covers the > application. Where should I refer him. He's a musician with a BSEE.Hi Richard, The main FAQ for the group is http://www.bdti.com/faq/dsp_faq.htm. -- % Randy Yates % "...the answer lies within your soul %% Fuquay-Varina, NC % 'cause no one knows which side %%% 919-577-9882 % the coin will fall." %%%% <yates@ieee.org> % 'Big Wheels', *Out of the Blue*, ELO http://home.earthlink.net/~yatescr
Reply by ●April 19, 20072007-04-19
You are joking, right ? Have you read the FAQ yourself before suggesting it to somebody else ? This is utter bilge creating nothing but confusion.> The main FAQ for the group ishttp://www.bdti.com/faq/dsp_faq.htm. > -- > % Randy Yates % "...the answer lies within your soul > %% Fuquay-Varina, NC % 'cause no one knows which side > %%% 919-577-9882 % the coin will fall." > %%%% <y...@ieee.org> % 'Big Wheels', *Out of the Blue*, ELOhttp://home.earthlink.net/~yatescr
Reply by ●April 19, 20072007-04-19
Randy Yates wrote:> Richard Owlett <rowlett@atlascomm.net> writes: > >> A friend came across some software for changing playback speed without >> distorting pitch. I know I've seen a FAQ that covers the >> application. Where should I refer him. He's a musician with a BSEE. > > Hi Richard, > > The main FAQ for the group is http://www.bdti.com/faq/dsp_faq.htm.There's some discussion of theory at http://www.dspdimension.com/ Jerry -- Engineering is the art of making what you want from things you can get. ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Reply by ●April 19, 20072007-04-19
fizteh89 wrote:> You are joking, right ? > > Have you read the FAQ yourself before suggesting it to somebody else ? > > This is utter bilge creating nothing but confusion. > > > >>The main FAQ for the group ishttp://www.bdti.com/faq/dsp_faq.htm. >>-- >>% Randy Yates % "...the answer lies within your soul >>%% Fuquay-Varina, NC % 'cause no one knows which side >>%%% 919-577-9882 % the coin will fall." >>%%%% <y...@ieee.org> % 'Big Wheels', *Out of the Blue*, ELOhttp://home.earthlink.net/~yatescr > > >Didn't seem like a joke to me. Seems like a perfectly fine general FAQ to me. I even had it bookmarked even though it was the one I was thinking of. CHILL ;]
Reply by ●April 19, 20072007-04-19
Jerry Avins wrote:> Randy Yates wrote: > >> Richard Owlett <rowlett@atlascomm.net> writes: >> >>> A friend came across some software for changing playback speed without >>> distorting pitch. I know I've seen a FAQ that covers the >>> application. Where should I refer him. He's a musician with a BSEE. >> >> >> Hi Richard, >> >> The main FAQ for the group is http://www.bdti.com/faq/dsp_faq.htm. > > > There's some discussion of theory at http://www.dspdimension.com/ > > JerryThat's the one. Especially http://www.dspdimension.com/index.html?timepitch.html .
Reply by ●April 19, 20072007-04-19
On Apr 19, 11:18 am, Richard Owlett <rowl...@atlascomm.net> wrote:> fizteh89 wrote: > > You are joking, right ? > > > Have you read the FAQ yourself before suggesting it to somebody else ? > > > This is utter bilge creating nothing but confusion. > > >>The main FAQ for the group ishttp://www.bdti.com/faq/dsp_faq.htm. > >>-- > >>% Randy Yates % "...the answer lies within your soul > >>%% Fuquay-Varina, NC % 'cause no one knows which side > >>%%% 919-577-9882 % the coin will fall." > >>%%%% <y...@ieee.org> % 'Big Wheels', *Out of the Blue*, ELOhttp://home.earthlink.net/~yatescr > > Didn't seem like a joke to me. Seems like a perfectly fine general FAQ > to me. I even had it bookmarked even though it was the one I was > thinking of. CHILL ;]- Hide quoted text - > > - Show quoted text -"Q2.5: How does pitch perception work, and how do I implement it on my DSP chip?" Considering the fact that nobody knows exactly how human pitch perception works how can you possibly implement it on a DSP chip ? Aren't you supposed to know exactly what you are doing before you even touch the damn chip ? I don't even want to discuss the references they suggest - utter bilge like I said...
Reply by ●April 19, 20072007-04-19
fizteh89 wrote:> "Q2.5: How does pitch perception work, and how do I implement it on my > DSP chip?" > > Considering the fact that nobody knows exactly how human pitch > perception works how can you possibly implement it on a DSP chip ?Perhaps a better title would be "pitch detection" (taking into account known perceptual aspects). Fortunately, for this basic task (identifying the pitch of a (pitched) source relative to the Western scale), we don't need to know how "exactly". Had we waited until this exact knowledge was obtained, the whole highly-successful pitch/MIDI conversion industry would simply not exist. To say nothing of query-by-humming services, voice-tracking karaoke, etc. Exactitude is not always possible. Sometimes a little fuzziness works pretty well (e.g. time/frequency tradeoff, which applies to the human ear just as much as to a pitch detector).> Aren't you supposed to know exactly what you are doing before you even > touch the damn chip ? > I don't even want to discuss the references they suggest - utter bilge > like I said... > >Unfortunately "utter bilge" is not, as far as I am aware, a technical term. Perhaps you could elaborate. And suggest some non-bilge references ("ballast"?) instead. Easy to make unsupported judgements (and always useless to the reader) - but on this list it is preferred that some supportive evidence be proffered! if you have better references, I am sure the FAQ writers will be happy to consider them. Richard Dobson
