jmiles at pop.net
Mon Jun 20 22:04:20 UTC 2011
Not even remotely. Try it.
-- john, KE5FX
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-
> bounces at febo.com] On Behalf Of Poul-Henning Kamp
> Sent: Monday, June 20, 2011 8:04 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] DDS'ery
> In message <4DFF5F2F.7050003 at hvsistemas.es>, Javier Herrero writes:
> >No, it is not the same. If you just use the MSB of the accumulator, it =
> >has a lot of period jitter. It can be unnoticeable if the ration between
> >reference frequency and output frequency is very high.
> In practice, this jitter is a lot lower than you get from
> squaring the sinewave.
> Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG | TCP/IP since RFC 956
> FreeBSD committer | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by
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