On Sun, May 6, 2018 at 4:03 PM, James Trammell <james.trammell@xxxxxxxxx> wrote:
I don't have a use for it and so far it is only for recreation. Some of the artists I follow use this technique sometimes to play with images. Some of the music I like reminds me of the way Audacity bends images(I made short clips with Ryoji Ikeda's soundtracks, [1] and [2]) . I want to explore analog video synthesizers but don't have the money to invest in a setup right now so I thought I can explore digital ways for the idea.
Shailendra,Glitching images seems like a cool idea and has me curious: what do you use this for? Are you hiding audio messages in images, as in steganography?
Hello James,
I don't have a use for it and so far it is only for recreation. Some of the artists I follow use this technique sometimes to play with images. Some of the music I like reminds me of the way Audacity bends images(I made short clips with Ryoji Ikeda's soundtracks, [1] and [2]) . I want to explore analog video synthesizers but don't have the money to invest in a setup right now so I thought I can explore digital ways for the idea.
Although steganography like that is also an inviting idea. I think an esoteric mix of cryptography + machine learning + digital signal processing tools would make for some really interesting work.
Best,
Shailendra
Thanks.On Sat, May 5, 2018 at 7:13 AM, Måns Rullgård <mans@xxxxxxxxx> wrote:Shailendra Paliwal <beingshailendra@xxxxxxxxx> writes:
> Hello,
>
> I found sox as a command-line equivalent of Audacity. I was wondering how
> can I glitch images like the way I can using Audacity.
>
> On audacity the usual modus operandi is,
>
> 1. Use Audacity > File > Import > Raw Data, to import a BMP image file.
> 2. Set the encoding to U-Law or A-Law.
> 3. Apply audio effects to the track.
> 4. Export Audio, set Save As Type > Other Uncompressed Files
> 5. Header > RAW (header-less) and Encoding > whichever selected in (2)
> 6. Rename to BMP
>
> I was wondering if the same method can be used with sox. That way I can
> make shell scripts to glitch images or even thousands of frames in a video.
Yes, this can be done. Try something like this:
$ sox -t ul -c 1 -r 48k input -t ul output effects...
--
Måns Rullgård
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