ESP32 Forum

Nice! Are you using the Teensy libraries?I'm currently working on AAC support.

Nice! Are you using the Teensy libraries?I'm currently working on AAC support.

you mean this mike?
will come back to this theme too, but just in time "bare metal" audio
but now am audio infected since this theme works lightest from the hand .
jeroen and you have done nice work with this, AAC is good , i will come in the next steps same things on SBC/BT.
what you think about PCM1863 this for have a reserve play ( but limited 192KHz )

best wishes
rudi

you mean this mike?

Yes, theres lots of stuff you can adapt. They got everything.

what you think about PCM1863 this for have a reserve play ( but limited 192KHz )

Not sure I can parse that question.

what you think about PCM1863 this for have a reserve play ( but limited 192KHz )

Not sure I can parse that question.

mean using an "extern" ADC for "extra" stuff

best wishes
rudi

Sorry, I'm a little slow today, I still don't get it. Feel free to PM me in german if you like.

Just pushed an update with AAC support, its still a bit beta though. If someone knows about AAC (or even libfaad2), there is an issue with the ADTS parser I believe.

Just pushed an update with AAC support, its still a bit beta though. If someone knows about AAC (or even libfaad2), there is an issue with the ADTS parser I believe.

If you want to use libfaad2, you have to increase the task stack to more and more big. libfaad2 is not a good aac decoder, the stack size, the performance etc.

If you want to use libfaad2, you have to increase the task stack to more and more big. libfaad2 is not a good aac decoder, the stack size, the performance etc.

Yeah I noticed it uses a lot of memory, the only other free AAC decoder I'm aware of is Helix, but it doesn't support SBR which is important because web radio streams often use it. What would you recommend?

If you want to use libfaad2, you have to increase the task stack to more and more big. libfaad2 is not a good aac decoder, the stack size, the performance etc.

Yeah I noticed it uses a lot of memory, the only other free AAC decoder I'm aware of is Helix, but it doesn't support SBR which is important because web radio streams often use it. What would you recommend?

Yes, Helix decoder has big issue in some aac audio data in m4a format. Another open source decoder is FDK AAC:
https://en.wikipedia.org/wiki/Fraunhofer_FDK_AAC

I was under the impression the Fraunhofer implementation wasn't free, but apparently that affects only the xHE-AAC version. Will try that one out, thanks for the hint!

The sources are available at https://github.com/mstorsjo/fdk-aac, in case anyone else is interested.