T.R | Title | User | Personal Name | Date | Lines |
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1562.1 | PCM/VCR combo is outdated | DREGS::BLICKSTEIN | Yo! | Mon Jul 25 1988 10:55 | 8 |
| My opinion is that the additional money you might spend on PCM is not
nearly worth it. Especially considering the oncome of DAT and the
difference in sound quality between a high quality Hi-Fi VCR and PCM.
Note that there is a VCR out that comes with PCM. It's been discussed
hear in Commusic, but I'm not sure what note.
db
|
1562.2 | My sanyo is fine! | CTHULU::YERAZUNIS | The light that burns twice as bright burns half as long | Mon Jul 25 1988 11:55 | 13 |
| The VCR-with-PCM is the Toshiba at Lechmere's. But it seems to
have Rolanditis (zit on nose). It cannot encode/decode PCM from
the tuner in realtime (i.e. you can't listen to WGBX). You must
first record it and then play the copy back to hear it.
-----
I have a Sanyo VHS HiFi Stereo, and it is incredibly clean.
N.B. none of the HiFi Stereo units can punch-in/punch-out like
a cassette, because of the spinning-head technology. They're really
only useful as mix target, or to catch the signal coming directly
off of the board.
|
1562.3 | IMO DAT vs THOR vs VHS Hi-Fi | MIZZOU::SHERMAN | incompetence knows no bounds | Mon Jul 25 1988 14:04 | 32 |
|
Thanks for the input, so far. Looks like PCM is out. I called
Lechmere and they said it was the DX1000 that is no longer in stock
and went for $1000. Looks like the best option will be a Hi-Fi
deck. This leads me to conclude that Hi-Fi is best for audio
mastering and is and will continue to be the most efficient solution
for the average MIDIot (if there be such a thing).
There is a minor problem with DAT as far as bang for the buck goes.
Because the coming DAT recorders are set up for consumer use, they do
not interface via digital means to a professional digital recorder.
This means there will be an analog interface if a DAT is used as a
master and an album, for example, is generated from it. Also,
although Rat Shack has announced THOR (Tandy High-density Optical
Recording, I believe), they have not yet worked out all the bugs. In
particular, the recording medium requires a laser that is both
dual-wavelength and high power. Rumor has it that getting the power
necessary in a small, cheap package may be tough. Another company
(the name escapes me) is announcing a similar product for high-density
computer storage to come out this fall for about $5000. I predict
that THOR will have several clones before the end of next year and
that it will both be larger and more expensive than predicted, due to
the laser problem. My impression is that Rat Shack announced it early
to try to thwart all the clones that inevitably will be able to
come out with their products earlier but at a projected higher cost.
This they have done in an effort to encourage consumers to wait
before purchase. But, because THOR will still be consumer-oriented
(like DAT) it will still not provide a perfect medium for mastering
to professional digital because of the analog interface that will
still be necessary.
Steve
|
1562.4 | | PAULJ::HARRIMAN | Art is not nice | Mon Jul 25 1988 14:10 | 12 |
|
re: coming DAT recorders
I don't know where you are hearing your information re: consumer
DAT recorders, but in Montreal they are selling Casio 12-bit recorders
for about $1200 CN and they not only have rs-422 and digital subcode
capability, they can dump their data via the port. Whether or not
your existing digital deck can talk to it is up to you.
Of course, it's only 12 bits....
/pjh
|
1562.5 | | MIZZOU::SHERMAN | incompetence knows no bounds | Mon Jul 25 1988 15:17 | 9 |
| One article I read was in MUSICIAN and dealt with the bandwidth
rather than the resolution as the culprit separating the professional
units from the consumer ones. Sounds like the Casio would be the
ticket if it can link directly, digitally to a professional digital
recorder. (Is that what the digital subcode capability offers?)
As I recall, home units usually record at 44.1 kHz, while the
professional units are around 48 kHz.
Steve
|
1562.6 | subcodes | PAULJ::HARRIMAN | Art is not nice | Mon Jul 25 1988 17:28 | 13 |
|
re: subcodes
All a subcode really is, is the ability to record non-sonic events
at arbitrary locations, and puke 'em out the serial port. I suppose
that can mean just about anything. I understand that there are some
standard subcodes being defined, but basically they are just the
DAT equivalent of a SYSEX command...
BTW, some studio quality (notably the Tascam) CD players can do
this too.
/pjh
|
1562.7 | No 44.1 KHz Recording in Consumer DAT | DRUMS::FEHSKENS | | Mon Jul 25 1988 18:44 | 13 |
| re .5 - Actually it's the other way around - the pro units record
at 44.1 KHz as well as 48 Khz. The conusmer units cannot record
at 44.1 Khz, so as to disallow direct digital copying of CDs.
This, despite the fact that there are "do not copy" flags available
in the CD to prevent this. However, disallowing direct digital
copying was not good enough for the RIAA, so they proposed CopyCode,
which would screw up copying through the analog inputs.
There're actually 8 (or so) different DAT formats, with sampling
rates of 32, 44.1 and 48 Khz (maybe even others, I just don't recall).
len.
|
1562.8 | went for it.. DAT fever, what's that? | SALSA::MOELLER | Good, or just codependent ? | Tue Aug 30 1988 20:37 | 10 |
| I just purchased a Toshiba DX900 PCM VHS HQ Hi-Fi deck, a floor
demo, for $700 incl. tax. 14-bit 44.1KHz. Also, once in digital
format, video-video on another VHS deck will remain digital ! SO
I can BACK UP my favorite mixes, or make a properly-sequenced
stereo album master with a borrowed VHS deck. Also got a 4-year
parts'n'labor warranty for $75.. figured it was worth it.
More later.
karl
|
1562.9 | | MIZZOU::SHERMAN | socialism doesn't work ... | Wed Aug 31 1988 10:57 | 3 |
| I'm green with envy ...
Steve
|
1562.10 | Non Tech Toshiba BX900 PCM VHS HiFi Review | SALSA::MOELLER | Only serious 'pers.names' from now on. | Wed Sep 28 1988 16:04 | 33 |
| after some time spent with the Toshiba BX900, some comments in words
of one syllable..
I like it.
Let me say this. The audio differences between VHS HiFi and the
PCM encode/decode are subtle, but there. The PCM spec goes down
to 5Hz, and I believe it. Tape 'spinup' time is slow but predictable,
leaving at most a 4 second gap between pieces. The tape counter/
timer is accurate, with little slippage. With PCM, the top end
is more transparent, 'digital' sounding, logically enough. HiFi
works very well, and if I hadn't gotten sort of a deal on this deck,
I agree that the extra money for PCM just isn't well spent.
Approaching diminishing returns.
Bill Y. stated this unit suffers from zit-on-nose syndrome in that
you can't monitor off tape while recording. I don't care, I trust
the stereo level meters on the front. Plays back at the same level
as showed while recording, which is the REAL issue. Monitor off
your tuner/mixer/preamp. Not an issue.
However, it's astonishing to me to hear recordings that are as clean
as if they were just being played via MIDI thru the mixer and system.
I'm preparing my piece list and timings for a cassette album, now
that I have a high-quality mixdown medium.
The Toshiba is a superb video deck, too, with a remote control,
digital still, quad screen variable speed digital still, double speed,
and more. Also has full VHF/UHF tuning circuitry, as well as cable
TV stuff I don't even understand yet.
karl (misquote me accurately, Janzen!) moeller
|
1562.11 | Wish my sampler could do that | DREGS::BLICKSTEIN | Yo! | Wed Sep 28 1988 18:04 | 7 |
| You mean this VCR does video too!!!
Wow!!!
;-)
db
|
1562.12 | you wish may come true | ANT::JANZEN | Performance Art is Life with Publicity | Wed Sep 28 1988 18:09 | 12 |
| >< Note 1562.11 by DREGS::BLICKSTEIN "Yo!" >
> -< Wish my sampler could do that >-
>
> You mean this VCR does video too!!!
>
> Wow!!!
>
> ;-)
> db
a commodore amiga can sample video with a peripheral.
Tom
|
1562.13 | | SALSA::MOELLER | Only serious 'pers.names' from now on. | Wed Sep 28 1988 18:58 | 6 |
| > a commodore amiga can sample video with a peripheral.
> Tom
rathole pointer to note 1589.5 on Amiga MIDI Videos
km
|
1562.14 | Is this two small zits or one big zit? | MIDEVL::YERAZUNIS | it's.. it's DIP ! | Thu Sep 29 1988 10:46 | 13 |
| The zit-on-nose is not just that it doesn't monitor the output from
the input during record, but also that _when recording a PCM VIDEO
BROADCAST (like WGBX runs), you can't do the obvious like listen
to the music via the PCM decoder as though it were just a highfalutin
PCM tuner; you must first record the program onto tape and then
you can play it back and listen to it!
C'mon, folks! There is _no_ reason to prevent Ch nn PCM -> audio
direct connection! It doesn't even require any extra hardware!
I'll wait for the next generation, thank you (maybe a Tandy-THOR?)
-Bill
|
1562.15 | more Toshiba PCM experiments | SALSA::MOELLER | Conscientious, or just codependent? | Fri Jan 20 1989 17:08 | 36 |
| The latest edition of Electronic Musician has a one-page review
of the Toshiba DX900 PCM VCR in a studio environment. I tried a new
trick, using the audio track to retain the FSK midi sync audio track in,
uh, sync with the mixed-down master. As it has a separate output,
I was able to resync the Mac to the VCR using my Yamaha FSK box!
So what, you say.. I could fill the 8track and max out my virtual
voices from the MIDI rack units, mix stereo audio to PCM while
simultaneously recording FSK on the edge audio track.. then copy
stereo PCM to two tracks on the 8track, along with the FSK track,
and start MIDI recording into the Mac.. ad infinitum/nauseam. In
this case the gating factor would be the noise buildup on the Fostex
8track (15ips, Dolby'C').
I borrowed a friend's VHS deck and tried for the first time to back
up my album master and some other mixes. Abysmal ! When the backup
was played in the PCM deck, there were all kinds of dropouts. And
when you get PCM tracking dropouts, everything stops !
.. and then I noticed the backup tape was playing at EP, the Extended
Play (super-slow) speed.. popped it in the second deck, reset the
recording speed, redubbed and it was a perfect safety copy.
> < Note 1562.14 by MIDEVL::YERAZUNIS "it's.. it's DIP !" >
> The zit-on-nose is not just that it doesn't monitor the output from
> the input during record,
"doesn't monitor the output from the input during record".. uh, I think
I understand. I can indeed monitor from this unit, either using its
own headphone output, or using the PCM stereo line-level audio
outputs. I agree it isn't monitoring from the tape, but as what's
going on the tape is EXACTLY what I'm hearing anyhow, I fail to
empathize. I can even fade audio material using its own input volume
control. There's a peak-reading meter that works fine. Haveta
keep the levels at or below +5.. digital distortion is REALLY ugly.
karl
|
1562.16 | No, Pete, it's NOT perfect | SALSA::MOELLER | Conscientious, or just codependent? | Mon Jan 23 1989 12:21 | 42 |
| PCM : Caveat Emptor
I have uncovered a problem with PCM in my environment. First you
oughta know I'm trying to do a cassette album. After having TERRIBLE
results from a local duplication house, using a 15" half-track,
I found a Phoenix duplicator that uses Nakamichi duplicating cassette
decks (hooray) and drives them directly from a Sony F1 PCM setup..
direct from digital. After talking with the guy, and seeing the
EM review that says the Toshiba DX900 PCM deck DOES make F1-PCM
format recordings, I decided to try to make a clea, correctly sequenced
DIGITAL master. (We had resequenced when going to half-track..)
Here's where the problems began. I borrowed a second VHS deck (NON
HiFi). As I said in my previous note, I learned how to use it for
digital copying deck-to-deck. The problem comes between pieces.
When I stop the PCM deck after recording a piece, the PCM 'carrier'
or 'tracking' signal also stops. Of course I don't want more that
4-6 seconds' pause between pieces.. When I record the NEXT piece,
there will be a short (~1 sec.) gap on the tape, between the pieces,
where there is NO PCM tracking (the light goes out).. when the PCM
tracking signal is picked up again, there is a very audible POP!
on the tape, in the (alleged) silence between pieces. Remember,
I'm coming in the VIDEO port from another VHS machine.. no opportunity
to use any volume controls.
So now I have a perfectly-sequenced, perfectly timed PCM digital
master tape, which I can digitally copy and give to the duplicator,
that has nasty, loud pops between pieces.
The only solution I see is dropping back into the analog domain..
borrowing a VHS HiFi deck, using the stereo line outs from the PCM
deck, to stereo line in on the HiFi deck, and using the input volume
control to silence the uh, silent pauses between pieces. Then,
having a perfect VHS HiFi version of the album master (not a bad
thing to have), I can dub BACK to the PCM deck, also using the stereo
line connections.
So next I get to borrow a VHS HiFi deck and test my theory.
karl
|
1562.17 | Yes, there is a fix | SALSA::MOELLER | Conscientious, or just codependent? | Mon Jan 23 1989 16:40 | 16 |
| As long as I have new info, I'll go on talking to myself..
The Toshiba Dx900 UNLOADS the tape when 'stop' is pressed. The
PCM tracking gap is caused by the time it takes to wind the tape
around the heads.
How I SHOULD have done my original master and all others is this:
Find the end of the last piece on tape, PAUSE one frame before PCM
tracking stops (or at the appropriate time), and go directly into
record. This prevents the PCM tracking gap, and thus the SNAP!
that's generated when PCM tracking kicks back in.
Oh well.. think of all I've learned..
karl
|
1562.18 | | XERO::ARNOLD | Sign on heaven's door: Hello Dali | Mon Jan 23 1989 16:56 | 8 |
| >>> As long as I have new info, I'll go on talking to myself..
Karl:
It may seem like you're takling to yourself but please keep
going. I'm learning a lot from this.
- John -
|
1562.19 | | DNEAST::BOTTOM_DAVID | Snow, sleet and rain, we love it! | Tue Jan 24 1989 08:17 | 5 |
| Let me second that. Karl please keep talking, you're light years
ahead of me in technology but I can glean alot of good stuff from
your experiences.
dbii
|
1562.20 | &*} | DYO780::SCHAFER | Brad - back in Ohio. | Tue Jan 24 1989 09:39 | 6 |
| Of course, I did this when I was 7, but the review is nice ... (insert
appropriate number of smiley faces).
So how's the weather in Tuscon?
-b where it's almost 60�
|
1562.21 | Who ya gonna call? ZITBUSTERS! | CTHULU::YERAZUNIS | Iconoclasm as a way of life... | Tue Jan 24 1989 13:48 | 19 |
| You're missing my point (missing the zit?)
The problem is with the Toshiba is this:
WGBX (channel 44, Boston) occasionally broadcasts PCM of 'audio
happenings" in it's TV video bandwidth.
However, the Toshiba is not capable of accepting the PCM video
and producing an audio output in REAL TIME. You have to record it
to tape first, then you can get the audio-domain signal.
Am I squeezing the wrong zit, or are you?
(i.e. if you run your VHS HQ machine playing a PCM tape into the
VIDEO IN on the Toshiba, can it make audio out of the PCM signal?
If so, I've missed the boat and want to buy one right away! :-))
-Bill
|
1562.22 | is WGBX' 'video' PCM like another VCR? | SALSA::MOELLER | Conscientious, or just codependent? | Tue Jan 24 1989 14:49 | 26 |
| Note 1562.21 by CTHULU::YERAZUNIS "Iconoclasm as a way of life..." >
> However, the Toshiba is not capable of accepting the PCM video
> and producing an audio output in REAL TIME. You have to record it
> to tape first, then you can get the audio-domain signal.
Bill, I don't know about a composite video/audioPCM signal coming
in off cable or the air.. no such thing here. HOWEVER :
> (i.e. if you run your VHS HQ machine playing a PCM tape into the
> VIDEO IN on the Toshiba, can it make audio out of the PCM signal?
> If so, I've missed the boat and want to buy one right away! :-))
YES, YES, YES ! I have a PCM audio tape in a second VCR. It's sending
undecoded PCM thru its video out to the Dx900's VIDEO in. I LISTEN
to the headphones OR the amp (fed by DX900's stereo line outs)..
that's how I 'resequenced' my album, i.e. put the pieces in the
correct order. It does indeed decode PCM coming in the video input!
My problems started there, as I explained, I didn't have my 'shift
into record' routine down, not understanding the tape load/unload
cycle.
karl
|
1562.23 | good price? on Toshiba PCM | NEWFUN::GEORGE | | Tue Jan 24 1989 17:34 | 8 |
| Lechemere in Salem, NH had three Toshiba VHS/HiFi/PCM decks yesterday
for ~$670. They were Christmas returns, but with full warranties.
There were also several Hi-Fi decks of various flavors starting around
$350.
Enjoy,
Dave
|
1562.24 | just bouncing along | SALSA::MOELLER | Audio/Video/MIDIophile | Fri Jan 27 1989 13:35 | 20 |
| < Note 1562.16 by SALSA::MOELLER "Conscientious, or just codependent?" >
> The only solution I see is dropping back into the analog domain..
> borrowing a VHS HiFi deck, using the stereo line outs from the PCM
> deck, to stereo line in on the HiFi deck, and using the input volume
> control to silence the uh, silent pauses between pieces. Then,
> having a perfect VHS HiFi version of the album master (not a bad
> thing to have), I can dub BACK to the PCM deck, also using the stereo
> line connections.
Worked perfectly. I borrowed an RCA VHS HiFi deck.. noticed that
the levels on the RCA deck were higher, at least on the meters,
during record and playback, than the same tape played back in HiFi
mode on the Toshiba. Once I figured this out it was easy to
compensate.
The high frequencies on HiFi are a bit more rounded, analog sounding..
digital can sound a bit brittle.. I think the xfer to HiFi and back
to PCM HELPED the sound !
karl
|
1562.25 | digital watch/radio/computer/music | SALSA::MOELLER | A bazillion MIPS ?.... really ? | Wed Feb 08 1989 16:53 | 7 |
| A VHS tape with PCM audio encoding made on the Toshiba DX900
tracked PERFECTLY on a SONY F1 PCM unit in 14-bit mode.
The studio owner did suggest doing some subtle compression on the
way to the cassette duplication dex.
karl
|
1562.26 | Are these or equivalents sold NEW anywhere? | XERO::ARNOLD | Am I re-elected yet? | Wed Feb 08 1989 17:05 | 19 |
| >>> A VHS tape with PCM audio encoding made on the Toshiba DX900
>>> tracked PERFECTLY on a SONY F1 PCM unit in 14-bit mode.
I know, I know. I just spent all of my money on another toy but...
Does anyone know who sells these OTHER THAN the Lechmere "outlet"
in Salem, NH and the price. I can't find them (or an equivalent
newer model with PCM) anywhere around here (MA and NH).
The reason I'm not really interested in the Lechmere ones (they
had 3 a few Saturdays ago) is that none of the units had the remote
control or owner's manual (so I'm presuming that there's a remote
for normal video use). I imagine that it would be a hassle (and
extra expense) to get the manual and remote so, wothout them, I
didn't think the price (~$650-$700 I think) was that great.
Go ahead, change my mind.
- John -
|
1562.27 | | SALSA::MOELLER | A bazillion MIPS ?.... really ? | Wed Feb 08 1989 17:51 | 7 |
| John, you right.. get the remote control. It works fine even when
recording audio-only. It was a real hoot, doing the PCM<->VHSHiFi
Shuffle, sitting in the easychair across the room, with my watch,
a notepad, a pen, and two VCR remote controls.. my wife walked in
the studio, saw me and started laughing..
karl (chilly here.. low 50's)
|
1562.28 | re:26, look at NY times | HJUXB::LEGA | Bug Busters Incorporated | Thu Feb 09 1989 10:31 | 8 |
| re:26
Check out the Sunday NY Times. The section with all the electronic
ads has dx900's. (Uncle Steve, E33 ST Electronics, 6th ave electronics,
47th St Photo). I am not endorsing any of them, since I dont know
if they are good. I have been taking their ads into Crazy Eddie,
and the Wiz, and getting the prices beat though. (not bad)
FWIW, Uncle steve had dx900's for 625$ last week.
|
1562.29 | Cookin'? | PENPAL::DUBE | Dan Dube 264-0506 | Mon Feb 27 1989 12:40 | 7 |
| Have you checked the "Cookin'" (formerly Tweeter, etc.) chain of NH
stores? There's one at the Pheasant Lane Mall in Nashua and at the
Mall of NH in Manchester. I don't know for sure, but they typically
carry the highest quality stereo and video components and are usually
willing to make a reasonable deal.
-Dan
|