Is there a way to load and cache a WAV from SD? Or play from WAV stored in PROGMEM?

[UnexpectedMaker]

Hi folks - I want to load a few WAVS from SD and store them in memory, and play the from there, so I don't have to take the loading hit them every time to play them.

Think small SFX that get called at specific times to be played. The delay in loading them every time from SD is too much for what I am doing, and I can't seem to find a way to play a WAV from data stored in PROGMEM, or that gets loaded at runtime, if I load the data myself.

Am I missing something obvious here?

Thanks :)
Seon - Unexpected Maker

[codegrue]

I too am looking for a way to play from PROGMEM

[Marcus4242]

Did you ever figure out a solution to play a small sound file with minimum delay?

[codegrue]

I was never able to get this library to work. I ended up using this one instead:

https://github.com/pschatzmann/arduino-audio-tools

And this post has my exact code to achieve the PROGMEM playback:

pschatzmann/arduino-audio-tools#1337 (reply in thread)

[Marcus4242]

Thanks for the update. I'll check it out 🙏

[schreibfaul1]

@Marcus4242
This library is far too large and far too slow for your intended use due to the processes to be initiated.
@UnexpectedMaker
A file is always expected. And the methods open(), available(), read(), position(), seek().... are used for this purpose. PROGMEM cannot do that. But you can use FFat, LittleFS, SPIFFS with a previously created partition.