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DB..1
Associate II
Apr 12, 2021 12:14 PM UTC
Question

WAV/MP3 player with STM32746G-Discovery.

Hello, I downloaded STM32CubeExpansion_Audio_V1.1.1 and I tested the MP3 player project (Audio_MP3_player) with an STM32746G-Discovery.

It works very well.

But now, I would like to add 2 or 3 additional functions but I have big gaps in development.

I would like to add a speed or pitch function (+/- 10%) and a reverse play function.

When playing a WAV or MP3 file, the audio file is buffered before being played.

I think it's in the fwkmempool.c file or player.c file to add these functions but I can't seem to.

If anyone can help me it would be welcome.

Thanks for your help.

Regards.

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7 replies

DB..1
DB..1Author
Associate II
Jul 20, 2021 4:21 PM UTC

Nobody ?

Tesla DeLorean
Guru
Jul 20, 2021 5:30 PM UTC

It's a forum, most people are occupied with their own projects and problems.

Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
DB..1
DB..1Author
Associate II
Jul 26, 2021 3:22 PM UTC

Update: I found out how to play an MP3/Wave sound while changing the playback speed.

Now I have to figure out how to play an MP3/Wave sound backwards.

RMuru.1
Associate
Aug 19, 2021 11:10 AM UTC

Can you share your project here?

DB..1
DB..1Author
Associate II
Aug 19, 2021 2:14 PM UTC

I'll send it to you later.

Thank you.

DB..1
DB..1Author
Associate II
Aug 19, 2021 4:43 PM UTC

Here is the link to download my project written with keil for the STM32F7.

In the meantime I have managed to get the music speed to work at +/- 100%.

https://dedibout.fr/index.php/s/4ef22Rr43pATnpp

Thanks for your help.

Associate II
Feb 25, 2025 5:46 PM UTC

Hi

Can you please reshare this project? It play music from USB Drive/SD card or transmited via USB from computer?