[gmpi] Re: Topic 6: Time representation
- From: "Angus F. Hewlett" <amulet@xxxxxxxxxxxxx>
- To: gmpi@xxxxxxxxxxxxx
- Date: Wed, 30 Apr 2003 09:12:12 -0400 (EDT)
On Wed, 30 Apr 2003 RonKuper@xxxxxxxxxxxx wrote:
> I think there seems to be a consensus that times should be represented in
> absolute units, with the host providing a mechanism to convert to other
> units as needed.
(or as it is able to)
> That said, what absolute format should we use:
> - Samples (64 bit)?
> - Seconds (double precision float)?
> - Something akin to "reference times" (64 bit, each unit = 100 nsec)
> - Other?
I don't like the idea of floats for this. In some ways a "reference time"
seems nice as it has a meaning independent of audio sample rate, but can
we guarantee enough precision at current and future sample rates? 1/44100
for example does not divide neatly in to nanoseconds.
Regards,
Angus.
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