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I was reading Laserdisc is actually analog...?

Last response: in Home Theatre Legacy
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Anonymous
October 23, 2004 11:17:44 PM

Archived from groups: alt.video.laserdisc (More info?)

Blaine Young Wrote:
> On Sun, 17 Oct 2004 03:42:33 GMT, Darrel Christenson
> Sorry to burst your bubble. The Dolby Digital 5.1 soundtrack on
> LaserDisc is encoded as an RF signal on the LaserDisc. That is why
> you need an RF demodulator to take the RF signal and unpack it into
> the Dolby Digital signal, which is then decoded by the AC-3 decoder.
>
> Blaine
> blam1@oz.net
> http://www.blamld.com

Oh, so does this mean i CAN take the raw RF signal from my LD-V2200
output and demodulate it? I thought i couldn't.


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Anonymous
October 24, 2004 5:16:14 AM

Archived from groups: alt.video.laserdisc (More info?)

>Oh, so does this mean i CAN take the raw RF signal from my LD-V2200
>output and demodulate it? I thought i couldn't.
>

You can. But the trick is that you have to get to the RF signal before it ever
gets to the audio process block in the player.

This means you have to do circuit level modification to add an AC-3 tap to the
right analogue channel to retrieve the RF signal.

But that's only the half of it. To enjoy Dolby Digital off of a LaserDisc, you
also have to demodulate the RF signal to retrieve the Dolby Digital bitstream
for decoding and playback. This means that either your receiver/processor must
have a demodulator built-in or you have to get an outboard demodulator
connected between the AC-3 RF output of the player and the digital input on the
receiver. - Reinhart
Anonymous
October 24, 2004 7:10:08 AM

Archived from groups: alt.video.laserdisc (More info?)

>Oh, so does this mean i CAN take the raw RF signal from my LD-V2200
>output and demodulate it? I thought i couldn't.
>

Again, yes and no. Your player needs an output capable of sending the modulated
AC-3 signal out to a demodulator. Other than that I'd guess your player is
competant to send out Dolby Digital soundtracks.
Steve Grauman
Anonymous
October 25, 2004 3:38:55 AM

Archived from groups: alt.video.laserdisc (More info?)

The LD-V2200 has a channel 3 RF modulated output. ALL the older players had
this before A/V inputs became standard on TV's.

The LD-V2200 does not output any type of RAW RF from the LD. When playing
an AC-3 LD and you hear the digital noise in the right side, even that is
filtered to the point a AC-3 decoder cannot recognize what it is.

This is an older unit, No digital sound, NO AC-3 output, NO DTS output.
These go for $15 to $25 on eBay.

Buy a newer unit with the features you want.

Kurtis


"half_eaten" <half_eaten.1eluv9@no-mx.forums.yourdomain.com.au> wrote in
message news:half_eaten.1eluv9@no-mx.forums.yourdomain.com.au...
>
> Blaine Young Wrote:
>> On Sun, 17 Oct 2004 03:42:33 GMT, Darrel Christenson
>> Sorry to burst your bubble. The Dolby Digital 5.1 soundtrack on
>> LaserDisc is encoded as an RF signal on the LaserDisc. That is why
>> you need an RF demodulator to take the RF signal and unpack it into
>> the Dolby Digital signal, which is then decoded by the AC-3 decoder.
>>
>> Blaine
>> blam1@oz.net
>> http://www.blamld.com
>
> Oh, so does this mean i CAN take the raw RF signal from my LD-V2200
> output and demodulate it? I thought i couldn't.
>
>
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