Discussion:
Strange echoes
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r***@optonline.net
2016-07-20 19:06:57 UTC
Permalink
I watch TV at night using headphones so as not to bother my wife trying to
sleep. I've noticed lately that on some shows, most notably M*A*S*H, but on a
few others, lines of dialog are echoed faintly in the background with about a
half second or second delay. Any idea what this phenomenon is? Thanks.
Stephen H. Fischer
2016-07-20 20:11:13 UTC
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Was M*A*S*H originally saved on magnetic tape?

The print through from layer to layer I heard on older tapes after a few
years.

Not a problem today but M*A*S*H is so old.

When they re-mastered the series to clean up the picture I would have
expected the sound to be cleaned up.

SHF
Post by r***@optonline.net
I watch TV at night using headphones so as not to bother my wife trying to
sleep. I've noticed lately that on some shows, most notably M*A*S*H, but on a
few others, lines of dialog are echoed faintly in the background with about a
half second or second delay. Any idea what this phenomenon is? Thanks.
r***@optonline.net
2016-07-20 22:38:02 UTC
Permalink
On Wed, 20 Jul 2016 13:11:13 -0700, "Stephen H. Fischer"
Post by Stephen H. Fischer
Was M*A*S*H originally saved on magnetic tape?
The print through from layer to layer I heard on older tapes after a few
years.
Not a problem today but M*A*S*H is so old.
When they re-mastered the series to clean up the picture I would have
expected the sound to be cleaned up.
SHF
Post by r***@optonline.net
I watch TV at night using headphones so as not to bother my wife trying to
sleep. I've noticed lately that on some shows, most notably M*A*S*H, but on a
few others, lines of dialog are echoed faintly in the background with about a
half second or second delay. Any idea what this phenomenon is? Thanks.
Yeah, good point about the tape. I'm watching it on a cable channel, so I have
no idea what their source is.
Steve Urbach
2016-07-21 02:05:19 UTC
Permalink
Post by r***@optonline.net
On Wed, 20 Jul 2016 13:11:13 -0700, "Stephen H. Fischer"
Post by Stephen H. Fischer
Was M*A*S*H originally saved on magnetic tape?
The print through from layer to layer I heard on older tapes after a few
years.
Not a problem today but M*A*S*H is so old.
When they re-mastered the series to clean up the picture I would have
expected the sound to be cleaned up.
SHF
Post by r***@optonline.net
I watch TV at night using headphones so as not to bother my wife trying to
sleep. I've noticed lately that on some shows, most notably M*A*S*H, but on a
few others, lines of dialog are echoed faintly in the background with about a
half second or second delay. Any idea what this phenomenon is? Thanks.
Yeah, good point about the tape. I'm watching it on a cable channel, so I have
no idea what their source is.
The ORIGINAL source would have been Film or Tape. Who knows what their source
was, or what generation.

VHS has a Linear Audio Track, so print through was possible
The show Video may have been recorded on 2" tape (common back then) . I can't
find a reference where the Audio track came from (a Synced audio tape?)
Bruce Esquibel
2016-07-21 13:05:57 UTC
Permalink
Post by Stephen H. Fischer
The print through from layer to layer I heard on older tapes after a few
years.
Not a problem today but M*A*S*H is so old.
I wonder if it's something with pseudo-stereo.

MASH is old enough to pre-date stereo broadcasting, so likely it's all mono
from the master tapes.

I wonder if the effect is intentional to give a sort-of-stereo quality that
is more noticable with headphones?

Else, some tv's have like a "surround mode" to make a wider soundstage from
the tinny speakers built in. Samsung uses "SRS TruSound HD" in some models
which causes a phasy/delayed/echo sound like that.

Not sure it's supposed to come out of the headphones if used, but who knows.

-bruce
***@ripco.com
Steve Urbach
2016-07-21 13:36:51 UTC
Permalink
Post by Bruce Esquibel
Post by Stephen H. Fischer
The print through from layer to layer I heard on older tapes after a few
years.
Not a problem today but M*A*S*H is so old.
I wonder if it's something with pseudo-stereo.
MASH is old enough to pre-date stereo broadcasting, so likely it's all mono
from the master tapes.
I wonder if the effect is intentional to give a sort-of-stereo quality that
is more noticable with headphones?
Else, some tv's have like a "surround mode" to make a wider soundstage from
the tinny speakers built in. Samsung uses "SRS TruSound HD" in some models
which causes a phasy/delayed/echo sound like that.
Not sure it's supposed to come out of the headphones if used, but who knows.
-bruce
I think you have the winning answer:

<FROM IMDB:>
Sound Mix: Mono (RCA Sound Recording)
r***@optonline.net
2016-07-21 18:13:23 UTC
Permalink
Post by r***@optonline.net
I watch TV at night using headphones so as not to bother my wife trying to
sleep. I've noticed lately that on some shows, most notably M*A*S*H, but on a
few others, lines of dialog are echoed faintly in the background with about a
half second or second delay. Any idea what this phenomenon is? Thanks.
Thanks for the replies guys. I just thought it was strange. And with the
speakers on, I don't hear it. Just with the headphones.

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