Can teensy do this?

[Crashy]

I'm using LF RF LS RS as inputs. I would like to get L R F B outputs. Also would like to deduct the matrixed sound from the input channels, eg if LF has 50hz and 123hz, and LS has 83hz and 123hz 180deg out of phase with LF, can I isolate the 123hz, then deduct the 123hz from the LF and LS channels?

I also would like to detect certain sounds without using FFT because it needs to be real-time and FFT is too slow. I would like to detect pink noise, 6-14hz, and 2k-3k sine wave

 

[MarkT]

This could simply be done by a few mixers, the most general way would have a mixer for each of the L, R, F, B outputs, each getting the 4 inputs - then you just play with the gains to combine them (gains can be negative, so you can subtract)

 

[Crashy]

So that answers the first question I guess.

How can I connect the toslink from TV to the teensy? Stupid question: will it give teensy 5.1 or is it still not decoded? I heard it was decoded by the TV?

 

[PaulStoffregen]

How can I connect the toslink from TV to the teensy?

You'll need an optical receiver part. Just feed its output to the SPDIF input pin. Here are a few conversations that might help.

https://forum.pjrc.com/index.php?threads/spdif-and-optical-toslink-pinout-schematic.69799/

https://forum.pjrc.com/index.php?threads/queued-toslink-spdif-delayer-to-sync-audio.73160/

GitHub - drandyhaas/AudioLinkSync: Code and design files etc for a small device that delays digital audio etc

Code and design files etc for a small device that delays digital audio etc - drandyhaas/AudioLinkSync

github.com

Stupid question: will it give teensy 5.1 or is it still not decoded? I heard it was decoded by the TV?

Today we only have software to receive ordinary stereo data by SPDIF.