Thank you Roman! How do I generate a buffer from the GetLatency function? I have it declared in my default template and it is default to zero. Fortunately the DSP isn't my issue, I just can't figure out how to get the buffer to do the actual FFT on :(
Sent from my iPhone. > On Nov 30, 2015, at 2:00 PM, [email protected] wrote: > > Send Coreaudio-api mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.apple.com/mailman/listinfo/coreaudio-api > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Coreaudio-api digest..." > > > Today's Topics: > > 1. Frame Size for Audio Unit Rendering (ex. FFT/IFFT) (Daniel Wilson) > 2. Re: Frame Size for Audio Unit Rendering (ex. FFT/IFFT) (Roman) > 3. Re: Frame Size for Audio Unit Rendering (ex. FFT/IFFT) > (Paul Davis) > 4. Re: Frame Size for Audio Unit Rendering (ex. FFT/IFFT) > (Daniel Wilson) > 5. Re: Frame Size for Audio Unit Rendering (ex. FFT/IFFT) > (Paul Davis) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 29 Nov 2015 23:08:01 -0600 > From: Daniel Wilson <[email protected]> > To: [email protected] > Subject: Frame Size for Audio Unit Rendering (ex. FFT/IFFT) > Message-ID: <[email protected]> > Content-Type: text/plain; charset=windows-1252 > > Does anyone know how to change the frame size when doing the digital signal > processing on an audio unit? Currently my audio unit is set up so that it > receives a single sample, does the signal processing, outputs the sample, and > repeats the process for each sample of the audio signal. I have created quite > a few audio units with this set up but now I want to process multiple samples > at the same time to do the FFT/IFFT, etc. Does anyone know how to do this? It > seems like most people are using audio units for iiOS, but my audio units are > for OS X to be used in programs like Logic Pro. Don’t know if that makes a > difference. > > -Daniel > > > ------------------------------ > > Message: 2 > Date: Mon, 30 Nov 2015 13:54:04 +0300 > From: Roman <[email protected]> > To: Daniel Wilson <[email protected]>, > [email protected] > Subject: Re: Frame Size for Audio Unit Rendering (ex. FFT/IFFT) > Message-ID: <[email protected]> > Content-Type: text/plain; charset=utf-8; format=flowed > > Hi Daniel, > > You need to implement buffering and output silence while you don't have > enough audio samples for your FFT/IFFT transformation. It is necessary > to output the correct value for GetLatency/GetTail functions. > > 30.11.2015 08:08, Daniel Wilson пишет: >> Does anyone know how to change the frame size when doing the digital signal >> processing on an audio unit? Currently my audio unit is set up so that it >> receives a single sample, does the signal processing, outputs the sample, >> and repeats the process for each sample of the audio signal. I have created >> quite a few audio units with this set up but now I want to process multiple >> samples at the same time to do the FFT/IFFT, etc. Does anyone know how to do >> this? It seems like most people are using audio units for iiOS, but my audio >> units are for OS X to be used in programs like Logic Pro. Don’t know if that >> makes a difference. >> >> -Daniel >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Coreaudio-api mailing list ([email protected]) >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/coreaudio-api/krandv%40rbcmail.ru >> >> This email sent to [email protected] > > -- > С уважением, > Роман > > > > ------------------------------ > > Message: 3 > Date: Mon, 30 Nov 2015 08:43:48 -0500 > From: Paul Davis <[email protected]> > To: Daniel Wilson <[email protected]> > Cc: CoreAudio API <[email protected]> > Subject: Re: Frame Size for Audio Unit Rendering (ex. FFT/IFFT) > Message-ID: > <CAFa_cKk0PEaVFzw3Uv2jFAJ=z4yfyvg0rxlc2uyg4pwxq+k...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > AudioUnits do not get to control the buffer size delivered via a render > call. The host decides this. > > On Mon, Nov 30, 2015 at 12:08 AM, Daniel Wilson <[email protected]> > wrote: > >> Does anyone know how to change the frame size when doing the digital >> signal processing on an audio unit? Currently my audio unit is set up so >> that it receives a single sample, does the signal processing, outputs the >> sample, and repeats the process for each sample of the audio signal. I have >> created quite a few audio units with this set up but now I want to process >> multiple samples at the same time to do the FFT/IFFT, etc. Does anyone know >> how to do this? It seems like most people are using audio units for iiOS, >> but my audio units are for OS X to be used in programs like Logic Pro. >> Don’t know if that makes a difference. >> >> -Daniel >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Coreaudio-api mailing list ([email protected]) >> Help/Unsubscribe/Update your Subscription: >> >> https://lists.apple.com/mailman/options/coreaudio-api/paul%40linuxaudiosystems.com >> >> This email sent to [email protected] > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <https://lists.apple.com/mailman/private/coreaudio-api/attachments/20151130/a79c93c2/attachment.html> > > ------------------------------ > > Message: 4 > Date: Mon, 30 Nov 2015 07:52:26 -0600 > From: Daniel Wilson <[email protected]> > To: Paul Davis <[email protected]> > Cc: CoreAudio API <[email protected]> > Subject: Re: Frame Size for Audio Unit Rendering (ex. FFT/IFFT) > Message-ID: <[email protected]> > Content-Type: text/plain; charset="utf-8" > > Paul thank you. That makes perfect sense. How do I switch my processing to > process the entire buffer at once and not just one sample at a time? > > Sent from my iPhone. > >> On Nov 30, 2015, at 7:43 AM, Paul Davis <[email protected]> wrote: >> >> AudioUnits do not get to control the buffer size delivered via a render >> call. The host decides this. >> >>> On Mon, Nov 30, 2015 at 12:08 AM, Daniel Wilson <[email protected]> >>> wrote: >>> Does anyone know how to change the frame size when doing the digital signal >>> processing on an audio unit? Currently my audio unit is set up so that it >>> receives a single sample, does the signal processing, outputs the sample, >>> and repeats the process for each sample of the audio signal. I have created >>> quite a few audio units with this set up but now I want to process multiple >>> samples at the same time to do the FFT/IFFT, etc. Does anyone know how to >>> do this? It seems like most people are using audio units for iiOS, but my >>> audio units are for OS X to be used in programs like Logic Pro. Don’t know >>> if that makes a difference. >>> >>> -Daniel >>> _______________________________________________ >>> Do not post admin requests to the list. They will be ignored. >>> Coreaudio-api mailing list ([email protected]) >>> Help/Unsubscribe/Update your Subscription: >>> https://lists.apple.com/mailman/options/coreaudio-api/paul%40linuxaudiosystems.com >>> >>> This email sent to [email protected] > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <https://lists.apple.com/mailman/private/coreaudio-api/attachments/20151130/b2bf093b/attachment.html> > > ------------------------------ > > Message: 5 > Date: Mon, 30 Nov 2015 09:07:14 -0500 > From: Paul Davis <[email protected]> > To: Daniel Wilson <[email protected]> > Cc: CoreAudio API <[email protected]> > Subject: Re: Frame Size for Audio Unit Rendering (ex. FFT/IFFT) > Message-ID: > <cafa_ckn7dd3hzscfrxwhp7g9gbj-nt+zbjg4urcmjirfdud...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Sorry, no idea. I'm a host author (Ardour / Mixbus / Tracks Live), not a > plugin writer. A host just gives you a block of samples, with the size of > its own choosing. What you do with them is up to you. As Roman mentioned, > you need to plan on buffering them and running your FFT periodically. > > On Mon, Nov 30, 2015 at 8:52 AM, Daniel Wilson <[email protected]> > wrote: > >> Paul thank you. That makes perfect sense. How do I switch my processing to >> process the entire buffer at once and not just one sample at a time? >> >> Sent from my iPhone. >> >> On Nov 30, 2015, at 7:43 AM, Paul Davis <[email protected]> >> wrote: >> >> AudioUnits do not get to control the buffer size delivered via a render >> call. The host decides this. >> >> On Mon, Nov 30, 2015 at 12:08 AM, Daniel Wilson <[email protected] >>> wrote: >> >>> Does anyone know how to change the frame size when doing the digital >>> signal processing on an audio unit? Currently my audio unit is set up so >>> that it receives a single sample, does the signal processing, outputs the >>> sample, and repeats the process for each sample of the audio signal. I have >>> created quite a few audio units with this set up but now I want to process >>> multiple samples at the same time to do the FFT/IFFT, etc. Does anyone know >>> how to do this? It seems like most people are using audio units for iiOS, >>> but my audio units are for OS X to be used in programs like Logic Pro. >>> Don’t know if that makes a difference. >>> >>> -Daniel >>> _______________________________________________ >>> Do not post admin requests to the list. They will be ignored. >>> Coreaudio-api mailing list ([email protected]) >>> Help/Unsubscribe/Update your Subscription: >>> >>> https://lists.apple.com/mailman/options/coreaudio-api/paul%40linuxaudiosystems.com >>> >>> This email sent to [email protected] > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <https://lists.apple.com/mailman/private/coreaudio-api/attachments/20151130/afb37ab9/attachment.html> > > ------------------------------ > > _______________________________________________ > Coreaudio-api mailing list > [email protected] > https://lists.apple.com/mailman/listinfo/coreaudio-api > > End of Coreaudio-api Digest, Vol 12, Issue 198 > ********************************************** _______________________________________________ Do not post admin requests to the list. They will be ignored. Coreaudio-api mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/coreaudio-api/archive%40mail-archive.com This email sent to [email protected]
