HM-DH30000 audio dropouts - AVS Forum
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post #1 of 7 Old 04-28-2001, 11:04 PM - Thread Starter
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Here we go again...
My HM-DH30000 periodically loses audio for about one second, every 20 minutes or so. When I rewind the tape to the point where I heard the dropout, the sound is fine. These dropouts can also be heard on the analog outputs of the DH30000.

This is strangely reminiscent of the classic PV-HD1000 - TU-DST50/51 audio problem, except that the DH30000 dropouts are fewer and last longer. I am using a Technics SH-AC500D decoder, which masks the audio dropouts coming from the TU-DST50. With the DH30000, the dropout is long enough that the decoder can't hide it.

Here's another thing to chew on: The video periodically pauses, but this effect is very subtle and most people won't see it. It's even harder to see with movies that have 3:2 pulldown judder. Using 1080i video source material makes the occasional hiccups more obvious since they are not masked by the judder of a film transfer.

I am certain these problems are added by the recording/playback process and are not on the original material. The video problem is subtle enough not to detract from the viewing experience, but a 1 second dropout during dialog is very annoying.

If someone has found a solution to this problem, please speak up. I would love a comment from Andy at 169Time, as he has reported to have solved the Panasonic dropout problem with the HDVR-100.

-Dylan


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post #2 of 7 Old 04-29-2001, 11:52 AM
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I've had exactly the same experience when I compared dropouts between an HD1000 and the JVC.
(see http://www.avsforum.com/ubb/Forum28/HTML/000137.html )
My test was for a half hour and I experienced one dropout for one second.

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- gridleak... biased toward HD

[This message has been edited by gridleak (edited 04-29-2001).]

-Roger
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post #3 of 7 Old 04-30-2001, 01:07 PM
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With my DVR-100 beta mod on my DCT-100, I have yet to hear an audio drop out.

dave
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post #4 of 7 Old 05-02-2001, 03:00 AM
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Yes, Dylan, the audio dropouts and video pauses. They happen to all US D-VHS tapes I have watched. The "1 audio dropout per 20 min" also matches perfectly to my experience. Somehow, I've got one tape gets video pauses only.

However, no similar problem was detected when viewing Japanese BS programs. The DH30000 at this moment is for Japanese market afterall.

Crusher

[This message has been edited by Crusher (edited 05-02-2001).]
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post #5 of 7 Old 05-02-2001, 08:13 AM
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Crusher-

What is the bandwidth of the Japanese BS HDTV programming? Do you know if it is less than the typical 19.4 Mbits we have here in the USA?

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post #6 of 7 Old 05-02-2001, 09:02 PM
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Don,

I couldn't find the bandwith for BS broadcasting but HS mode on DH30000 is 28.2Mb/s.

Crusher
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post #7 of 7 Old 05-03-2001, 11:04 AM
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Quote:
<font face="Verdana, Arial" size="2">Originally posted by Crusher:
Don,

I couldn't find the bandwith for BS broadcasting but HS mode on DH30000 is 28.2Mb/s.

Crusher
</font>
I belie the bandwith for BS is 21 Mb/s

Bernhard


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