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* [TUHS] PAC (Perceptual audio coder)
@ 2019-06-05 16:02 aksr
  2019-06-05 16:29 ` aksr
  0 siblings, 1 reply; 6+ messages in thread
From: aksr @ 2019-06-05 16:02 UTC (permalink / raw)
  To: TUHS

Hi,

Have anyone tried to get this open-sourced:

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


Regards,
Alexander

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [TUHS] PAC (Perceptual audio coder)
  2019-06-05 16:02 [TUHS] PAC (Perceptual audio coder) aksr
@ 2019-06-05 16:29 ` aksr
  2019-06-05 18:47   ` Dan Cross
  0 siblings, 1 reply; 6+ messages in thread
From: aksr @ 2019-06-05 16:29 UTC (permalink / raw)
  To: TUHS

On Wed, Jun 05, 2019 at 06:02:16PM +0200, aksr wrote:
> Have anyone tried to get this open-sourced:

*Has anyone...

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [TUHS] PAC (Perceptual audio coder)
  2019-06-05 16:29 ` aksr
@ 2019-06-05 18:47   ` Dan Cross
  2019-06-05 22:14     ` Rob Pike
  0 siblings, 1 reply; 6+ messages in thread
From: Dan Cross @ 2019-06-05 18:47 UTC (permalink / raw)
  To: aksr; +Cc: TUHS

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On Wed, Jun 5, 2019 at 12:29 PM aksr <aksr@t-com.me> wrote:

> On Wed, Jun 05, 2019 at 06:02:16PM +0200, aksr wrote:
> > Have anyone tried to get this open-sourced:
>
> *Has anyone...
>

Not that I'm aware of, not that anyone would tell me, though I knew some
people who used it. My understanding was that the most useful/interesting
parts got wrapped up into MPEG-4.

        - Dan C.

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^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [TUHS] PAC (Perceptual audio coder)
  2019-06-05 18:47   ` Dan Cross
@ 2019-06-05 22:14     ` Rob Pike
  2019-06-07 20:14       ` Lyndon Nerenberg
  0 siblings, 1 reply; 6+ messages in thread
From: Rob Pike @ 2019-06-05 22:14 UTC (permalink / raw)
  To: Dan Cross; +Cc: TUHS

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Ken Thompson and Sean Dorward worked hard on PAC to get it ready for
release. Our plan was to fill up the rest of the Plan 9 release CD with
several hundred meg of PAC audio. I gathered together music from a number
of famous musicians (I won't name drop here but you'd recognize them all),
much of it recorded just for us. We were going to release the source code
for the decoder and, in a compromise for the business people trying to sell
to the broadcasting industry (they eventually succeeded; digital FM
broadcasting is derived from PAC), only 386 binaries for the encoder, at
least for the initial release. At the time the encoder only ran about 1/4
real time on a PC.

Then an AT&T lawyer stepped in at the last minute, was deeply offensive and
rude to us, and shut down the effort for completely stupid and invalid
reasons. I still bristle at the memory. What an asshole.

PAC was so much clearer sounding that MP3. The world would have been a
happier place. If only.

-rob


On Thu, Jun 6, 2019 at 4:57 AM Dan Cross <crossd@gmail.com> wrote:

> On Wed, Jun 5, 2019 at 12:29 PM aksr <aksr@t-com.me> wrote:
>
>> On Wed, Jun 05, 2019 at 06:02:16PM +0200, aksr wrote:
>> > Have anyone tried to get this open-sourced:
>>
>> *Has anyone...
>>
>
> Not that I'm aware of, not that anyone would tell me, though I knew some
> people who used it. My understanding was that the most useful/interesting
> parts got wrapped up into MPEG-4.
>
>         - Dan C.
>
>

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^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [TUHS] PAC (Perceptual audio coder)
  2019-06-05 22:14     ` Rob Pike
@ 2019-06-07 20:14       ` Lyndon Nerenberg
  2019-06-07 20:38         ` Jon Steinhart
  0 siblings, 1 reply; 6+ messages in thread
From: Lyndon Nerenberg @ 2019-06-07 20:14 UTC (permalink / raw)
  To: Rob Pike; +Cc: TUHS

> Then an AT&T lawyer stepped in at the last minute, was deeply offensive and
> rude to us, and shut down the effort for completely stupid and invalid
> reasons. I still bristle at the memory. What an asshole.

Be brave. Name names. Let him try to sue himself out of history.

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [TUHS] PAC (Perceptual audio coder)
  2019-06-07 20:14       ` Lyndon Nerenberg
@ 2019-06-07 20:38         ` Jon Steinhart
  0 siblings, 0 replies; 6+ messages in thread
From: Jon Steinhart @ 2019-06-07 20:38 UTC (permalink / raw)
  To: TUHS

Lyndon Nerenberg writes:
> > Then an AT&T lawyer stepped in at the last minute, was deeply offensive and
> > rude to us, and shut down the effort for completely stupid and invalid
> > reasons. I still bristle at the memory. What an asshole.
>
> Be brave. Name names. Let him try to sue himself out of history.

Ken talked about this at a conference that I attended a couple of decades ago.
He had brought a whole pile of discs that he had made to give out before the
idea was nixed by the attorney.  Somehow audience members filched these discs
while Ken was fiddling with his slides.  No, I didn't end up getting one.  So
I don't know whether or not these included source code.

Jon

^ permalink raw reply	[flat|nested] 6+ messages in thread

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Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-06-05 16:02 [TUHS] PAC (Perceptual audio coder) aksr
2019-06-05 16:29 ` aksr
2019-06-05 18:47   ` Dan Cross
2019-06-05 22:14     ` Rob Pike
2019-06-07 20:14       ` Lyndon Nerenberg
2019-06-07 20:38         ` Jon Steinhart

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