Stereo Recording and Playback

[WA2MZG]

I am using a Teensy 4.0 and the Audio Shield with an SD Card for storage.
I would like to record, in stereo, from the line in and save the data to the SD card.
Also be able to play back the recorded data.
I would be using this to save all my LP's in a digital format - MP3.

It would be nice to save the data as MP3 but WAV or RAW will work for now.

It appears that the tools in the Audio System Design Tool are all mono.

Can someone point me in the right direction to get started, please.
Thank You,
Forest

 

[joepasquariello]

I typed "stereo recording" into the search bar and found a lot of links. This one looks helpful

https://forum.pjrc.com/index.php?threads/record-while-playing-a-stereo-wav-file.74866/post-342160

 

[WA2MZG]

Thank you for your quick response.
I did see this earlier but I assumed I was missing something because I cannot find
AudioPlayWAVstereo
AudioRecordWAVstereo

They are not in the Audio Design Tool nor in the Audio.h file.

Forest

 

[h4yn0nnym0u5e]

No, they're in https://github.com/h4yn0nnym0u5e/Audio/tree/feature/buffered-SD-audio-EvR (latest version). Discussion thread at https://forum.pjrc.com/index.php?threads/yet-another-file-player-and-recorder.70963/, which is the best place to post issues, too.

Paul keeps saying this will get rolled into Teensyduino at some point, but updates to TD 1.60 betas seem to have stalled...

 

[urbanspaceman]

I use the library from @h4yn0nnym0u5e for a looper and works great!
Hope to find his code in the official Audio library at some point
@Paul

 

[WA2MZG]

Thank You for all the helpful feedback.
I will put this all to good use this week and let you know if I am successful.
Have a great week,
Forest

 

[WA2MZG]

Thank you again - I was successful. I have recorded 30 albums so far with no issues.
I did add a DELETE button after the 1st 20 albums in case something went wrong with the recording making it easier to rerecord a specific album / side.
I am using the Teensy 4.0 and Audio Shield.

It records to a SD card and at the same time plays what is being recorded and after having been recorded, the wav file can be played.

I then take the SD card to my computer and rename the files to the proper vinyl album name and then convert to an mp3.

Works great - Thank You all again.

This is my development board with an ILI9341 display. The audio shield is mounted on the back.

Forest