Hear echo when recording video on Panasonic DMR hdd recorder

I am having trouble finding the reason why I hear a echo in the audio
portion of recording made from my sat box running through my Panasonic
DMR hdd video recorder. When the sat box is just playing through the
S-Video input on the TV, the sound is fine. But when I turn on the
HDD recorder and put it on the correct input, the sound has an echo.
It does this whether you watch or record. All recordings have the
echo too. Any ideas as to the source of the trouble would be
appreciated.

On Tue, 28 Aug 2007 11:23:02 -0700, 257roberts <scrwar@yahoo.com>
wrote:

>I am having trouble finding the reason why I hear a echo in the audio
>portion of recording made from my sat box running through my Panasonic
>DMR hdd video recorder. When the sat box is just playing through the
>S-Video input on the TV, the sound is fine. But when I turn on the
>HDD recorder and put it on the correct input, the sound has an echo.
>It does this whether you watch or record. All recordings have the
>echo too. Any ideas as to the source of the trouble would be
>appreciated.

I'm guessing crosstalk from the audio output from the DVR back to its
audio input.
Make a test recording where you disconnect the audio outputs from the
DVR. (Maybe disconnecting all but the needed input to make the
recording.)

If that helps, try to find the problamatic connection and try
different cables or a different conection scheme if possible.

If it doesn't help see if there is a "loop through" mode in the DVR
where it doesn't output the recorded signal but instead routes the
input directly to the output.

If that helps, it could be that the crosstalk is internal to the DVR
(from a failure or bad design).
/Jan

On Aug 29, 12:56 am, Jan B <nos...@nospam.se> wrote:
> On Tue, 28 Aug 2007 11:23:02 -0700, 257roberts <scr...@yahoo.com>
> wrote:
>
> >I am having trouble finding the reason why I hear a echo in the audio
> >portion of recording made from my sat box running through my Panasonic
> >DMR hdd video recorder. When the sat box is just playing through the
> >S-Video input on the TV, the sound is fine. But when I turn on the
> >HDD recorder and put it on the correct input, the sound has an echo.
> >It does this whether you watch or record. All recordings have the
> >echo too. Any ideas as to the source of the trouble would be
> >appreciated.
>
> I'm guessing crosstalk from the audio output from the DVR back to its
> audio input.
> Make a test recording where you disconnect the audio outputs from the
> DVR. (Maybe disconnecting all but the needed input to make the
> recording.)
>
> If that helps, try to find the problamatic connection and try
> different cables or a different conection scheme if possible.
>
> If it doesn't help see if there is a "loop through" mode in the DVR
> where it doesn't output the recorded signal but instead routes the
> input directly to the output.
>
> If that helps, it could be that the crosstalk is internal to the DVR
> (from a failure or bad design).
> /Jan

If I record from another source, for instance, straight from the TV
or another satellite box, everything works correctly. I may do as you
suggested and see if flipping something around helps. I'll report
back when I figure it out so the post might help someone else out with
a similar problem.
Thanks again for your reply.

On 8/29/2007, 257roberts posted this:
> On Aug 29, 12:56 am, Jan B <nos...@nospam.se> wrote:
>> On Tue, 28 Aug 2007 11:23:02 -0700, 257roberts <scr...@yahoo.com>
>> wrote:
>>
>>> I am having trouble finding the reason why I hear a echo in the audio
>>> portion of recording made from my sat box running through my Panasonic
>>> DMR hdd video recorder. When the sat box is just playing through the
>>> S-Video input on the TV, the sound is fine. But when I turn on the
>>> HDD recorder and put it on the correct input, the sound has an echo.
>>> It does this whether you watch or record. All recordings have the
>>> echo too. Any ideas as to the source of the trouble would be
>>> appreciated.
>>
>> I'm guessing crosstalk from the audio output from the DVR back to its
>> audio input.
>> Make a test recording where you disconnect the audio outputs from the
>> DVR. (Maybe disconnecting all but the needed input to make the
>> recording.)
>>
>> If that helps, try to find the problamatic connection and try
>> different cables or a different conection scheme if possible.
>>
>> If it doesn't help see if there is a "loop through" mode in the DVR
>> where it doesn't output the recorded signal but instead routes the
>> input directly to the output.
>>
>> If that helps, it could be that the crosstalk is internal to the DVR
>> (from a failure or bad design).
>> /Jan
>
> If I record from another source, for instance, straight from the TV
> or another satellite box, everything works correctly. I may do as you
> suggested and see if flipping something around helps. I'll report
> back when I figure it out so the post might help someone else out with
> a similar problem.
> Thanks again for your reply.

I reread your original post today, and the thought occurred to me that
you are hearing audio both from the satellite dish and from the HDD
recorder, rather than only from the source whose video you're watching.

Recall that the HDD, if it's like all the others I know of, records the
signal and then plays it out from the just-recorded data. This is what
allows for pausing live video and so forth, and it causes a delay from
live TV.

You haven't said how long the echo is delayed from the original sound.
If it's a couple of seconds, i.e. the same as the above mentioned
delay, that would support my hypothesis.

IOW (and to repeat), you could be hearing sound from two sources at
once. From the TV connected to the satellite and from the stereo
receiver connected to the DVR, for instance...Or from the DVR and from
a TV in another room, even.

--
Gene E. Bloch (Gino)
letters617blochg3251
(replace the numbers by "at" and "dotcom")

On Aug 29, 10:40 pm, Gene E. Bloch <spamf...@nobody.invalid> wrote:
> On 8/29/2007, 257roberts posted this:
>
>
>
>
>
> > On Aug 29, 12:56 am, Jan B <nos...@nospam.se> wrote:
> >> On Tue, 28 Aug 2007 11:23:02 -0700, 257roberts <scr...@yahoo.com>
> >> wrote:
>
> >>> I am having trouble finding the reason why I hear a echo in the audio
> >>> portion of recording made from my sat box running through my Panasonic
> >>> DMR hdd video recorder. When the sat box is just playing through the
> >>> S-Video input on the TV, the sound is fine. But when I turn on the
> >>> HDD recorder and put it on the correct input, the sound has an echo.
> >>> It does this whether you watch or record. All recordings have the
> >>> echo too. Any ideas as to the source of the trouble would be
> >>> appreciated.
>
> >> I'm guessing crosstalk from the audio output from the DVR back to its
> >> audio input.
> >> Make a test recording where you disconnect the audio outputs from the
> >> DVR. (Maybe disconnecting all but the needed input to make the
> >> recording.)
>
> >> If that helps, try to find the problamatic connection and try
> >> different cables or a different conection scheme if possible.
>
> >> If it doesn't help see if there is a "loop through" mode in the DVR
> >> where it doesn't output the recorded signal but instead routes the
> >> input directly to the output.
>
> >> If that helps, it could be that the crosstalk is internal to the DVR
> >> (from a failure or bad design).
> >> /Jan
>
> > If I record from another source, for instance, straight from the TV
> > or another satellite box, everything works correctly. I may do as you
> > suggested and see if flipping something around helps. I'll report
> > back when I figure it out so the post might help someone else out with
> > a similar problem.
> > Thanks again for your reply.
>
> I reread your original post today, and the thought occurred to me that
> you are hearing audio both from the satellite dish and from the HDD
> recorder, rather than only from the source whose video you're watching.
>
> Recall that the HDD, if it's like all the others I know of, records the
> signal and then plays it out from the just-recorded data. This is what
> allows for pausing live video and so forth, and it causes a delay from
> live TV.
>
> You haven't said how long the echo is delayed from the original sound.
> If it's a couple of seconds, i.e. the same as the above mentioned
> delay, that would support my hypothesis.
>
> IOW (and to repeat), you could be hearing sound from two sources at
> once. From the TV connected to the satellite and from the stereo
> receiver connected to the DVR, for instance...Or from the DVR and from
> a TV in another room, even.
>
> --
> Gene E. Bloch (Gino)
> letters617blochg3251
> (replace the numbers by "at" and "dotcom")- Hide quoted text -
>
> - Show quoted text -

I found out that I had the audio source from the sat box split with
one split going to the television audio input and the other split
going to the DVR. When I disconnected one of the splits (the one
going to the TV), the echo went away. The only thing now is if I want
to watch the sat box, I have to have the DVR turned on and to the
correct input source. I do appreciate all of your help with a problem
that really had me scratching my head. Thank you.

On 9/20/2007, 257roberts posted this:
> On Aug 29, 10:40 pm, Gene E. Bloch <spamf...@nobody.invalid> wrote:
>> On 8/29/2007, 257roberts posted this:
>>
>>
>>
>>
>>
>>> On Aug 29, 12:56 am, Jan B <nos...@nospam.se> wrote:
>>>> On Tue, 28 Aug 2007 11:23:02 -0700, 257roberts <scr...@yahoo.com>
>>>> wrote:
>>
>>>>> I am having trouble finding the reason why I hear a echo in the audio
>>>>> portion of recording made from my sat box running through my Panasonic
>>>>> DMR hdd video recorder. When the sat box is just playing through the
>>>>> S-Video input on the TV, the sound is fine. But when I turn on the
>>>>> HDD recorder and put it on the correct input, the sound has an echo.
>>>>> It does this whether you watch or record. All recordings have the
>>>>> echo too. Any ideas as to the source of the trouble would be
>>>>> appreciated.
>>
>>>> I'm guessing crosstalk from the audio output from the DVR back to its
>>>> audio input.
>>>> Make a test recording where you disconnect the audio outputs from the
>>>> DVR. (Maybe disconnecting all but the needed input to make the
>>>> recording.)
>>
>>>> If that helps, try to find the problamatic connection and try
>>>> different cables or a different conection scheme if possible.
>>>> If it doesn't help see if there is a "loop through" mode in the DVR
>>>> where it doesn't output the recorded signal but instead routes the
>>>> input directly to the output.
>>
>>>> If that helps, it could be that the crosstalk is internal to the DVR
>>>> (from a failure or bad design).
>>>> /Jan
>>
>>> If I record from another source, for instance, straight from the TV
>>> or another satellite box, everything works correctly. I may do as you
>>> suggested and see if flipping something around helps. I'll report
>>> back when I figure it out so the post might help someone else out with
>>> a similar problem.
>>> Thanks again for your reply.
>>
>> I reread your original post today, and the thought occurred to me that
>> you are hearing audio both from the satellite dish and from the HDD
>> recorder, rather than only from the source whose video you're watching.
>>
>> Recall that the HDD, if it's like all the others I know of, records the
>> signal and then plays it out from the just-recorded data. This is what
>> allows for pausing live video and so forth, and it causes a delay from
>> live TV.
>>
>> You haven't said how long the echo is delayed from the original sound.
>> If it's a couple of seconds, i.e. the same as the above mentioned
>> delay, that would support my hypothesis.
>>
>> IOW (and to repeat), you could be hearing sound from two sources at
>> once. From the TV connected to the satellite and from the stereo
>> receiver connected to the DVR, for instance...Or from the DVR and from
>> a TV in another room, even.
>>
>> --
>> Gene E. Bloch (Gino)
>> letters617blochg3251
>> (replace the numbers by "at" and "dotcom")- Hide quoted text -
>>
>> - Show quoted text -
>
> I found out that I had the audio source from the sat box split with
> one split going to the television audio input and the other split
> going to the DVR. When I disconnected one of the splits (the one
> going to the TV), the echo went away. The only thing now is if I want
> to watch the sat box, I have to have the DVR turned on and to the
> correct input source. I do appreciate all of your help with a problem
> that really had me scratching my head. Thank you.

Won't your TV let you chose only *one* audio input at a time? The split
input to the TV shouldn't be audible when the line input from the DVR
is active.

Looks like I'm contradicting my own earlier suggestion - the one that
worked for you :-)

--
Gene E. Bloch (Gino)
letters617blochg3251
(replace the numbers by "at" and "dotcom")

On Sep 21, 6:11 pm, Gene E. Bloch <spamf...@nobody.invalid> wrote:
> On 9/20/2007, 257roberts posted this:
>
>
>
>
>
> > On Aug 29, 10:40 pm, Gene E. Bloch <spamf...@nobody.invalid> wrote:
> >> On 8/29/2007, 257roberts posted this:
>
> >>> On Aug 29, 12:56 am, Jan B <nos...@nospam.se> wrote:
> >>>> On Tue, 28 Aug 2007 11:23:02 -0700, 257roberts <scr...@yahoo.com>
> >>>> wrote:
>
> >>>>> I am having trouble finding the reason why I hear a echo in the audio
> >>>>> portion of recording made from my sat box running through my Panasonic
> >>>>> DMR hdd video recorder. When the sat box is just playing through the
> >>>>> S-Video input on the TV, the sound is fine. But when I turn on the
> >>>>> HDD recorder and put it on the correct input, the sound has an echo.
> >>>>> It does this whether you watch or record. All recordings have the
> >>>>> echo too. Any ideas as to the source of the trouble would be
> >>>>> appreciated.
>
> >>>> I'm guessing crosstalk from the audio output from the DVR back to its
> >>>> audio input.
> >>>> Make a test recording where you disconnect the audio outputs from the
> >>>> DVR. (Maybe disconnecting all but the needed input to make the
> >>>> recording.)
>
> >>>> If that helps, try to find the problamatic connection and try
> >>>> different cables or a different conection scheme if possible.
> >>>> If it doesn't help see if there is a "loop through" mode in the DVR
> >>>> where it doesn't output the recorded signal but instead routes the
> >>>> input directly to the output.
>
> >>>> If that helps, it could be that the crosstalk is internal to the DVR
> >>>> (from a failure or bad design).
> >>>> /Jan
>
> >>> If I record from another source, for instance, straight from the TV
> >>> or another satellite box, everything works correctly. I may do as you
> >>> suggested and see if flipping something around helps. I'll report
> >>> back when I figure it out so the post might help someone else out with
> >>> a similar problem.
> >>> Thanks again for your reply.
>
> >> I reread your original post today, and the thought occurred to me that
> >> you are hearing audio both from the satellite dish and from the HDD
> >> recorder, rather than only from the source whose video you're watching.
>
> >> Recall that the HDD, if it's like all the others I know of, records the
> >> signal and then plays it out from the just-recorded data. This is what
> >> allows for pausing live video and so forth, and it causes a delay from
> >> live TV.
>
> >> You haven't said how long the echo is delayed from the original sound.
> >> If it's a couple of seconds, i.e. the same as the above mentioned
> >> delay, that would support my hypothesis.
>
> >> IOW (and to repeat), you could be hearing sound from two sources at
> >> once. From the TV connected to the satellite and from the stereo
> >> receiver connected to the DVR, for instance...Or from the DVR and from
> >> a TV in another room, even.
>
> >> --
> >> Gene E. Bloch (Gino)
> >> letters617blochg3251
> >> (replace the numbers by "at" and "dotcom")- Hide quoted text -
>
> >> - Show quoted text -
>
> > I found out that I had the audio source from the sat box split with
> > one split going to the television audio input and the other split
> > going to the DVR. When I disconnected one of the splits (the one
> > going to the TV), the echo went away. The only thing now is if I want
> > to watch the sat box, I have to have the DVR turned on and to the
> > correct input source. I do appreciate all of your help with a problem
> > that really had me scratching my head. Thank you.
>
> Won't your TV let you chose only *one* audio input at a time? The split
> input to the TV shouldn't be audible when the line input from the DVR
> is active.
>
> Looks like I'm contradicting my own earlier suggestion - the one that
> worked for you :-)
>
> --
> Gene E. Bloch (Gino)
> letters617blochg3251
> (replace the numbers by "at" and "dotcom")- Hide quoted text -
>
> - Show quoted text -

The audio is "shared" on two of the video inputs on the tv. I'm
thinking that might be part of the problem of the echo. But anyway, I
can now record programming on the sat box to the DVR. The TV is a
Toshiba 27" flat.

On 9/23/2007, 257roberts posted this:
> On Sep 21, 6:11 pm, Gene E. Bloch <spamf...@nobody.invalid> wrote:
>> On 9/20/2007, 257roberts posted this:
>>
>>
>>
>>
>>
>>> On Aug 29, 10:40 pm, Gene E. Bloch <spamf...@nobody.invalid> wrote:
>>>> On 8/29/2007, 257roberts posted this:
>>>>> On Aug 29, 12:56 am, Jan B <nos...@nospam.se> wrote:
>>>>>> On Tue, 28 Aug 2007 11:23:02 -0700, 257roberts <scr...@yahoo.com>
>>>>>> wrote:
>>
>>>>>>> I am having trouble finding the reason why I hear a echo in the audio
>>>>>>> portion of recording made from my sat box running through my Panasonic
>>>>>>> DMR hdd video recorder. When the sat box is just playing through the
>>>>>>> S-Video input on the TV, the sound is fine. But when I turn on the
>>>>>>> HDD recorder and put it on the correct input, the sound has an echo.
>>>>>>> It does this whether you watch or record. All recordings have the
>>>>>>> echo too. Any ideas as to the source of the trouble would be
>>>>>>> appreciated.
>>
>>>>>> I'm guessing crosstalk from the audio output from the DVR back to its
>>>>>> audio input.
>>>>>> Make a test recording where you disconnect the audio outputs from the
>>>>>> DVR. (Maybe disconnecting all but the needed input to make the
>>>>>> recording.)
>>
>>>>>> If that helps, try to find the problamatic connection and try
>>>>>> different cables or a different conection scheme if possible.
>>>>>> If it doesn't help see if there is a "loop through" mode in the DVR
>>>>>> where it doesn't output the recorded signal but instead routes the
>>>>>> input directly to the output.
>>
>>>>>> If that helps, it could be that the crosstalk is internal to the DVR
>>>>>> (from a failure or bad design).
>>>>>> /Jan
>>
>>>>> If I record from another source, for instance, straight from the TV
>>>>> or another satellite box, everything works correctly. I may do as you
>>>>> suggested and see if flipping something around helps. I'll report
>>>>> back when I figure it out so the post might help someone else out with
>>>>> a similar problem.
>>>>> Thanks again for your reply.
>>
>>>> I reread your original post today, and the thought occurred to me that
>>>> you are hearing audio both from the satellite dish and from the HDD
>>>> recorder, rather than only from the source whose video you're watching.
>>>> Recall that the HDD, if it's like all the others I know of, records the
>>>> signal and then plays it out from the just-recorded data. This is what
>>>> allows for pausing live video and so forth, and it causes a delay from
>>>> live TV.
>>
>>>> You haven't said how long the echo is delayed from the original sound.
>>>> If it's a couple of seconds, i.e. the same as the above mentioned
>>>> delay, that would support my hypothesis.
>>>> IOW (and to repeat), you could be hearing sound from two sources at
>>>> once. From the TV connected to the satellite and from the stereo
>>>> receiver connected to the DVR, for instance...Or from the DVR and from
>>>> a TV in another room, even.
>>
>>>> --
>>>> Gene E. Bloch (Gino)
>>>> letters617blochg3251
>>>> (replace the numbers by "at" and "dotcom")- Hide quoted text -
>>>> - Show quoted text -
>>
>>> I found out that I had the audio source from the sat box split with
>>> one split going to the television audio input and the other split
>>> going to the DVR. When I disconnected one of the splits (the one
>>> going to the TV), the echo went away. The only thing now is if I want
>>> to watch the sat box, I have to have the DVR turned on and to the
>>> correct input source. I do appreciate all of your help with a problem
>>> that really had me scratching my head. Thank you.
>>
>> Won't your TV let you chose only *one* audio input at a time? The split
>> input to the TV shouldn't be audible when the line input from the DVR
>> is active.
>>
>> Looks like I'm contradicting my own earlier suggestion - the one that
>> worked for you :-)
>>
>> --
>> Gene E. Bloch (Gino)
>> letters617blochg3251
>> (replace the numbers by "at" and "dotcom")- Hide quoted text -
>>
>> - Show quoted text -
>
> The audio is "shared" on two of the video inputs on the tv. I'm
> thinking that might be part of the problem of the echo. But anyway, I
> can now record programming on the sat box to the DVR. The TV is a
> Toshiba 27" flat.

OK, got it...

There are available (for only a few dollars) audio or audio-video
switch boxes that accept two or three inputs and direct the selected
input to the one output. They are passive, so (1) they're cheap and (2)
they work in reverse as well - one input to the selected output,
although the latter mode is obviously not what you need.

That might end up convenient for you.

Here's an example at Radio Shack: http://tinyurl.com/3y9a8v

There are also more expensive ones that can be operated by a remote
control.

--
Gene E. Bloch (Gino)
letters617blochg3251
(replace the numbers by "at" and "dotcom")