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Forum Index : Microcontroller and PC projects : Picomite MP3

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mibinho

Newbie

Joined: 06/03/2023
Location: Germany
Posts: 7
Posted: 06:31pm 29 Mar 2023
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Hello,
Is it possible playback a mp3-file with mmbasic like here:

https://learn.adafruit.com/mp3-playback-rp2040/pico-mp3


?
--
the vermin have inherited the earth.
 
Amnesie
Guru

Joined: 30/06/2020
Location: Germany
Posts: 396
Posted: 06:35pm 29 Mar 2023
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The links seems to be down... But the only benefit for mp3 is that it is much smaller. I am happy with wav playback because 32GB of SD Card is huge.. Okay if you want to build some music player it will be hard with wav I guess...

Edit: + give Peter a break! I don't know how he even doing all this magic in such a short time.      

Greetings
Daniel
Edited 2023-03-30 04:38 by Amnesie
 
mibinho

Newbie

Joined: 06/03/2023
Location: Germany
Posts: 7
Posted: 06:38pm 29 Mar 2023
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https://learn.adafruit.com/mp3-playback-rp2040/pico-mp3
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the vermin have inherited the earth.
 
mibinho

Newbie

Joined: 06/03/2023
Location: Germany
Posts: 7
Posted: 06:38pm 29 Mar 2023
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Wav is also fine for me. I want a short 5 seconds "Startup Sound"
Edited 2023-03-30 04:47 by mibinho
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matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 9139
Posted: 06:46pm 29 Mar 2023
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  Quote  Mono and stereo files less than 64kbit/s work, with sample rates from 8kHz to 24kHz.


That isn't decent quality mp3 and is incompatible with the mp3 files you have stored. The processor isn't powerful enough to do 44100Hz MP3 let alone anything faster
 
Volhout
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Joined: 05/03/2018
Location: Netherlands
Posts: 4256
Posted: 12:53pm 30 Mar 2023
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Addtional complication is the sample rate conversion. MP3 can be 8kHz....48kHz. That is find for direct writing to a DAC. Picomite has a PWMat 44.1kHz. Conversion of rates is definitely a nasty task...
PicomiteVGA PETSCII ROBOTS
 
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