Playback control with Adafruit Audio FX Mini Sound Board

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jtlechem
 
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Joined: Mon May 09, 2022 7:46 pm

Playback control with Adafruit Audio FX Mini Sound Board

Post by jtlechem »

I have audio files playing on my Audio FX Mini Sound Board and I would like to control the playback speed, specifically the tempo, without changing the pitch/frequency. What I need is a physical knob that will act as playback tempo controller.
On the product page for this sound board (https://www.adafruit.com/product/2341) it says, "Control over UART (9600 Baud) via any microcontroller, we have an Arduino Library for basic control over playback and volume."

Does that statement indicate capability to do what I need? And where can I find the mentioned Arduino library?

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adafruit_support_bill
 
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Re: Playback control with Adafruit Audio FX Mini Sound Board

Post by adafruit_support_bill »

Our library for the Fx board does not support changes to the playback speed. I'm not sure if that is possible with the VS1000 chip.
https://cdn-shop.adafruit.com/datasheets/vs1000.pdf

The VS1053 used on the MusicMaker boards is a more powerful and programmable chip.
http://www.adafruit.com/datasheets/vs1053.pdf

The MusicMaker library exposes only a subset of its functionality. The VLSI forums would be the best source of information about more advanced signal processing capabilities.
http://www.vsdsp-forum.com/phpbb/index.php

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