From Newsgroup: comp.os.linux.advocacy

On 2026-03-15 22:34, Lawrence D’Oliveiro wrote:

On Sun, 15 Mar 2026 17:07:51 +0800, Mr. Man-wai Chang wrote:

Discrete cosine transform - Wikipedia
<https://en.wikipedia.org/wiki/Discrete_cosine_transform>

Also see: <https://en.wikipedia.org/wiki/Wavelet_transform> and <https://en.wikipedia.org/wiki/JPEG2000>.

<https://en.wikipedia.org/wiki/DjVu>
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ES🇪🇸, EU🇪🇺;
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From Newsgroup: comp.os.linux.advocacy

On Wed, 18 Mar 2026 17:27:20 +0800, Mr. Man-wai Chang wrote:

On 3/18/2026 5:41 AM, Lawrence D’Oliveiro wrote:

On Tue, 17 Mar 2026 19:48:35 +0800, Mr. Man-wai Chang wrote:

No, but the algorithm aka method!

Can’t understand code?

It'll take a lot of time to comprehend codes in order to find out
the algorithms that become codes!

That’s how intelligent life forms do it.

As for the rest -- the secret is to bang the rocks together, guys!
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From Newsgroup: comp.os.linux.advocacy

On 3/19/2026 9:33 AM, Lawrence D’Oliveiro wrote:

On Wed, 18 Mar 2026 17:27:20 +0800, Mr. Man-wai Chang wrote:

It'll take a lot of time to comprehend codes in order to find out
the algorithms that become codes!

That’s how intelligent life forms do it.

As for the rest -- the secret is to bang the rocks together, guys!

An intent(algorithm, design) that causes a series of unfortunate crimes(codes)... :)

Lemony Snicket's A Series of Unfortunate Events | Official Trailer [HD]
| Netflix - YouTube
<https://www.youtube.com/watch?v=Tup-5yOcJuM>
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@~@ Simplicity is Beauty! Remain silent! Drink, Blink, Stretch!
/ v \ May the Force and farces be with you! Live long and prosper!!
/( _ )\ https://sites.google.com/site/changmw/
^ ^ https://github.com/changmw/changmw
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From Newsgroup: comp.os.linux.advocacy

On 2026/3/19 1:33:0, Lawrence D’Oliveiro wrote:

On Wed, 18 Mar 2026 17:27:20 +0800, Mr. Man-wai Chang wrote:

On 3/18/2026 5:41 AM, Lawrence D’Oliveiro wrote:

On Tue, 17 Mar 2026 19:48:35 +0800, Mr. Man-wai Chang wrote:

No, but the algorithm aka method!

Can’t understand code?

It'll take a lot of time to comprehend codes in order to find out
the algorithms that become codes!

That’s how intelligent life forms do it.

As for the rest -- the secret is to bang the rocks together, guys!

Ah, but I _am_ higher up the evolutionary ladder than a demented bee!
42
--
J. P. Gilliver. UMRA: 1960/<1985 MB++G()ALIS-Ch++(p)Ar++T+H+Sh0!:`)DNAf

From Newsgroup: comp.os.linux.advocacy

On 3/17/2026 1:20 AM, Mr. Man-wai Chang wrote:

On 3/17/2026 6:42 AM, Lawrence D’Oliveiro wrote:

On Tue, 17 Mar 2026 00:05:56 +0800, Mr. Man-wai Chang wrote:

On 3/16/2026 5:34 AM, Lawrence D’Oliveiro wrote:

<https://en.wikipedia.org/wiki/JPEG2000>.

A graphical comparison might make it easier to understand!

There was one right there!

How do you convert an image into waveforms?

Google for "How do you convert an image into waveforms?"

And away you go.

The algorithms used will be summarized in many places - to really
understand how they work you'll be balls deep in gnarly C code for
months and months, most of it undocumented.

That link to OpenJPEG Larry Duh gave you is a good example.

Another somewhat interesting transformation is how to turn video of
running lava lamps into random numbers.

https://en.wikipedia.org/wiki/Lavarand

The algorithm is: digitize "the chaotic patterns of warm wax blobs
oozing inside an array of lava lamps. This data is then processed with a cryptographic hash function to produce a high-quality seed for a cryptographically-secure pseudorandom number generator (CSPRNG)."


Today CloudFlare uses that system to secure Internet traffic.

https://blog.cloudflare.com/lavarand-in-production-the-nitty-gritty-technical-details/

https://www.youtube.com/watch?v=1cUUfMeOijg

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From Newsgroup: comp.os.linux.advocacy

On Thu, 19 Mar 2026 12:33:24 -0400, DFS wrote:

Google for "How do you convert an image into waveforms?"

Some of the wake word recognition algorithms convert a waveform into an
image (spectrogram). ML works really well for image classification while processing time domain data is hard.
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From Newsgroup: comp.os.linux.advocacy

DFS wrote this screed in ALL-CAPS:

On 3/17/2026 1:20 AM, Mr. Man-wai Chang wrote:

On 3/17/2026 6:42 AM, Lawrence D’Oliveiro wrote:

On Tue, 17 Mar 2026 00:05:56 +0800, Mr. Man-wai Chang wrote:

On 3/16/2026 5:34 AM, Lawrence D’Oliveiro wrote:

<https://en.wikipedia.org/wiki/JPEG2000>.

A graphical comparison might make it easier to understand!

There was one right there!

How do you convert an image into waveforms?

Google for "How do you convert an image into waveforms?"

And away you go.

The algorithms used will be summarized in many places - to really
understand how they work you'll be balls deep in gnarly C code for
months and months, most of it undocumented.

That link to OpenJPEG Larry Duh gave you is a good example.

Another somewhat interesting transformation is how to turn video of
running lava lamps into random numbers.

https://en.wikipedia.org/wiki/Lavarand

The algorithm is: digitize "the chaotic patterns of warm wax blobs
oozing inside an array of lava lamps. This data is then processed with a cryptographic hash function to produce a high-quality seed for a cryptographically-secure pseudorandom number generator (CSPRNG)."

Today CloudFlare uses that system to secure Internet traffic.

https://blog.cloudflare.com/lavarand-in-production-the-nitty-gritty-technical-details/

https://www.youtube.com/watch?v=1cUUfMeOijg

<https://youtu.be/5wIOBBodoic?t=137>

The Batsh*t Software Aphex Twin Used

Talks about the Metasynth app and "painting" sound.
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Fine day for friends.
So-so day for you.
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