nanog mailing list archives
Re: Operation Ghost Click
From: Joe Hamelin <joe () nethead com>
Date: Wed, 2 May 2012 17:40:51 -0700
On Wed, May 2, 2012 at 1:20 PM, <Valdis.Kletnieks () vt edu> wrote:
It may not be the codec that sucks...
Yeah, it is. Sit on hold with some music that is at a low volume and you'll hear part that turn into white noise at times. Mobile operators us codecs that are tuned for human voice. Get sounds away from voice and they turn to mush. Back in a past life when I was a broadcast engineer we would use dial-up lines for remotes. If the remote was in the same CO and it was an analog (mechanical) office we could get 8-10kHz audio through a pair, and flat if we used a bit of equalization. S/N was good enough to play records for an AM station. Of course, now in the day of cell phones the term "broadcast quality" has lost all meaning. Field reporters using cell phones for live broadcast! There is a reason that the FCC set aside 30kHz channels for electronic news gathering (ENG.) At least some stations still order up ISDN lines for remotes. -- Joe Hamelin, W7COM, Tulalip, WA, 360-474-7474
Current thread:
- Re: Operation Ghost Click, (continued)
- Re: Operation Ghost Click JC Dill (May 01)
- Re: Operation Ghost Click Livingood, Jason (May 02)
- Re: Operation Ghost Click Jeroen van Aart (May 02)
- Re: Operation Ghost Click Valdis . Kletnieks (May 02)
- Re: Operation Ghost Click Jeroen van Aart (May 02)
- Re: Operation Ghost Click Christopher Morrow (May 02)
- RE: Operation Ghost Click Eric Wieling (May 02)
- Re: Operation Ghost Click Sean Harlow (May 02)
- Re: Operation Ghost Click Jeroen van Aart (May 02)
- Re: Operation Ghost Click Valdis . Kletnieks (May 02)
- Re: Operation Ghost Click Joe Hamelin (May 02)
- Cellphones and Audio (was Ghost Click, though I got no idea why) Jay Ashworth (May 02)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Adam Atkinson (May 02)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Robert Bonomi (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Jay Ashworth (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Valdis . Kletnieks (May 03)
- RE: Cellphones and Audio (was Ghost Click, though I got no idea why) Brandt, Ralph (May 03)
- RE: Cellphones and Audio (was Ghost Click, though I got no idea why) Brandt, Ralph (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Adam Atkinson (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Jay Ashworth (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Joel jaeggli (May 03)