Slowing playspeed without changing pitch

Writing software for systems that use VLSI Solution's devices as slave codecs to a host microcontroller.
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sidaro
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Joined: Mon 2021-10-25 12:32

Slowing playspeed without changing pitch

Post by sidaro »

Hi,

Setting an higher playSpeed works fine for me but now I would like to set a lower playspeed (without changing audio pitch).
According to datasheet this is not implemented on the chip (only x2, x3,...) but any idea how to do that on the software side?
(I'm using an adafruit music maker feather wing & arduino IDE).

thanks for your help!
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pasi
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Joined: Thu 2010-07-15 16:04

Re: Slowing playspeed without changing pitch

Post by pasi »

You would need a "tempo changer", which is the reverse part of a pitch-shifter.

Which vs10xx chip are you using?

There are pitch shifter plugins for some of the IC's, see http://www.vlsi.fi/en/support/software/ ... ugins.html .
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sidaro
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Posts: 2
Joined: Mon 2021-10-25 12:32

Re: Slowing playspeed without changing pitch

Post by sidaro »

Thanks for your answer, looks exactly what I need.
I'm using the VS1053B included in an adafruit feather wing:
https://cdn-learn.adafruit.com/assets/a ... 1481755871
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