HiFi Real-time audio with Teensy 4.1

[raviduino]

Hello,
I am trying to accomplish the following for a field project. All suggestions are welcome.

I have a Teesny 4.1 board and the Audio Shield 4

Aim: Record at least 192kHz via analogue microphones and store data on the SD card.

Additionally, to playback, with low latency, real-time. Signals pass a convolution process.

Objective 1: To record bat calls.
Objective 2: To perform playback experiments in the field.

I encountered some discussions in the forum, but they dated several years ago.

Cheers!
Ravi

 

[BriComp]

Have you seen this and this?

 

[MarkT]

Additionally, to playback, with low latency, real-time. Signals pass a convolution process.

Like uniform partitioned convolution? For instance my attempt: https://forum.pjrc.com/threads/68939-Low-latency-two-level-partitioned-convolution-for-the-T4?highlight=fft+convolution

Others: https://forum.pjrc.com/threads/43847-FFT-Convolution-object-for-Teensy-Audio-library-(guitar-cabinet-simulation-)?highlight=fft+convolution and https://forum.pjrc.com/threads/38011-Real-time-Convolution-Reverb-(large-impulse-file)?highlight=fft+convolution

And if you don't need 10,000's of taps you can just use standard FIR filtering - its a fast processor.