On Mon, Feb 18, 2002 at 02:08:12 +0000, Steve Harris wrote:
> I'm a little dubious about that. It's possible to write a Free pro-logic
> compatible encoder (I have), as most of the technology predates dobly, but
> it can't, legally be 100% compatible for licencing reasons. AC3 is much
> more complicated, and you couldn't feasibly reproduce the encoded output
> without having followed the spec (unless I'm missing something).

Sorry, I was wrong. The situation is very simmilar. It could be entirly
legal to produce a stream that is ATSC52 compliant, and therefore AC3
compatible, you just can't call it Dolby Digital, etc.

The standards document is not very clear on the patent situation.

PC's should just about be able to do AC3 encoding in realtime too, last
time I tried it was way off, but that was on a 400MHz PII or similar.

- Steve

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