Sound frequency division by a fixed number
Just asking before buying parts: is there a way to make a frequency division(by 10, for example) in sigma studio for the Adau1701? It seems to be doable by cutting out 9/10th of the signal by a counter, and maybe joining the parts with keeping the level, but i'm quite amateur in sounds, so it would be better to hear it from a pro! Thanks!
Audio Signal Processors
SigmaDSP Audio Processors
adau1701
Hello freeone,
Well, I think you are asking about shifting the pitch of an audio signal? The dividing method you mention would only work for clock-like signals and since you mentioned "audio" I am assuming you mean music or voice?
So wew do have a pitch shift algorithm in the library. It will have audible artifacts that get worse the more you shift the pitch. certainly a shift of dividing by 10 would not sound very good.
I did some searching of the forum and found these threads. There are more. This should give you an idea of what it is and what it is capable of.
https://ez.analog.com/thread/95684
https://ez.analog.com/thread/48134
https://ez.analog.com/thread/15508
https://ez.analog.com/thread/17204
Dave T
Hello!
Thanks for Your reply, i've read those topics already. I just guessed that it could be done with some tricks, because what i want to convert, is animal sound, so not music etc. but i was looking for a better device, to avoid using digital frequency dividers, to get some quality. So i guess there is no easy way:) Thanks anyway!
Maybe old fashioned recording tape with a speed controller work better than a digital method. turn up the speed for the recording.
Slowing down later is easy with audio sw, what i want to do, is on-the-fly division, for listening on site.
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