[App_rpt-users] Beagleboard and USB URI dongle

[James Nessen]

Why not run ntpd and keep your clock in sync all the time instead of
once an hour :)

Jim, K6JWN

On Thu, Feb 17, 2011 at 01:09:17AM -0600, Chuck Henderson <rpt2 at chuck.midlandsnetworking.com> said:

> When I started using this software I noticed the audio issues in my test
> environment.  I tried a dozen different mothertboard/CPU combinations and 3
> different USB fobs.  I found that the faster the system the
> less noticeable the issues but even a 3.4 GHZ quad core still had the
> issues.  I experimented with a lot of variables and several things made some
> difference but the single most significant thing that reduced the issue
> was stopping ntpd.  I now run ntpdate 40 seconds after the hour, every hour.
>  This keeps the date and time close enough and greatly reduces the audio
> glitch like sounds that I was noticing.  Also I found that when the system
> is not under test and is using real hand held and mobile stations working
> through the repeater that the remaining audio glitch like sounds
> are indistinguishable from typical normal radio noise hits.  By the way, my
> final choice for a system board is the D510MO.
> While I do not know for sure, I suspect that when ntpd makes tiny
> adjustments to the system time, this results in tiny glitches in the
> processing in the USB sound system.  I am clueless how to track it down any
> further, and do not see any need.
> Chuck