Re: Can I use sox to glitch images?

On Sun, May 6, 2018 at 4:03 PM, James Trammell <[email protected]>
wrote:

> 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]
<https://www.instagram.com/p/BgGp6DNgw0J/?taken-by=ziscore> and [2
<https://www.instagram.com/p/BgWONx3AFoA/?taken-by=ziscore>]) . 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 <[email protected]> wrote:
>
>> Shailendra Paliwal <[email protected]> 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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>

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