[opendtv] Re: DTV Audio
- From: dan.grimes@xxxxxxxx
- To: opendtv@xxxxxxxxxxxxx
- Date: Fri, 8 Aug 2008 16:36:46 -0700
I wish all stations were that responsive. I've talked directly with the
chief engineers at certain affiliates to discuss problems with certain
programs and audio channels (like the SAP). But the feedback I get is "it
sounds good in our master control."
Dan
"John Shutt" <shuttj@xxxxxxxxx>
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[opendtv] Re: DTV Audio
Cliff,
I strongly recommend you contact the station and tell them. They will
appreciate it, and no, they probably can't hear it. Most stations still
monitor their analog off-air as their primary audio source in Master
Control, and only have QC monitoring of the digital stream, and in some
cases the cable channel.
We had some people complain about the video quality (or lack thereof) of
our HD channel on AVS forum yesterday, and it resulted in our finding that
our Tandberg multiplexer had locked up and the bitrate for the HD channel
was locked at 7 Mbps video, and our first SD channel was also stuck at 7
Mbps. Our second and third channels were both stuck at about 1.5 Mbps.
Normally all four services are stat muxed out of a pool of 18 Mbps.
The video looked passable on our air monitors, so we didn't notice the
drop in HD quality, but the AVS forum viewer did, and particularly noticed
how small the cached file was for a program he recorded on his hard drive.
Tell us when something is wrong, and we'll fix it. With the criminally
low staffing these days, and the increased workload of monitoring many
channels plus records, ingests, productions, and duplications, we can't
see everything all the time.
John
----- Original Message -----
From: Cliff Benham
The problems with live audio show up much worse in local HD. The CH 6
news staff all
sound distorted and clipped without any headroom in the signal, like the
VU meter
[if they even have such a beast anymore] is being slammed into the end
stop.
Can they even hear this? Is anybody in engineering even listening?
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