RE: MD: Comments wanted: Signal path integrity

2000-01-10 Thread Martin Schiff


Since your vinyls are analog recordings, there is a conversion from analog
to digital taking place in your receiver, but from that point on, there are
no more conversions until you play the CD you burned.

-- Martin

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of Rick Pali
Sent: Sunday, January 09, 2000 10:59 PM

I'm curious if the signal is undergoing conversion to/from analogue at any
point. I know that it doesn't in the receiver, but I wonder about the mixer
in the soundcard. One promising sign is that as long as the record level is
at 100% in the mixer, the record level indicator readings in CoolEdit are
identical to those on the minidisc deck. I know that the SB Live isn't the
best card in the world for this kind of thing, but I've got to work with
what I've got at this point.

Any comments or thoughts are welcome.

Rick.
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Re: MD: Comments wanted: Signal path integrity

2000-01-10 Thread Ralph Smeets


[EMAIL PROTECTED] wrote:
 
 I've got a number of MDs that I made of my vinyl that I can't easily replace
 (no turntable!) so in addition to making duplicate MDs and putting the
 originals away, I'd like to make CD copies of them as well.
 
 This is the equipment I've got: Sony JE-510, Harman Kardon AVR-500 receiver
 (optical and co-ax ins and outs), SB Live platinum, and a Yamaha burner. The
 JE-510 has an optical feed to the AVR-500, which has a co-ax feed to the
 soundcard. I shut down all the inputs but the S/PDIF in and recorded a WAV
 with CoolEdit2000. After that's done I break it up into tracks at my leisure
 and burn the files to a CDR.
 
 I'm curious if the signal is undergoing conversion to/from analogue at any
 point. I know that it doesn't in the receiver, but I wonder about the mixer
 in the soundcard. One promising sign is that as long as the record level is
 at 100% in the mixer, the record level indicator readings in CoolEdit are
 identical to those on the minidisc deck. I know that the SB Live isn't the
 best card in the world for this kind of thing, but I've got to work with
 what I've got at this point.
 
 Any comments or thoughts are welcome.

Hmm What is the exact path of the audio signal from the turntable?
Is it:

Turntable - AVR-500 (internal conversion to Digital) - SBLive digital in?

In this case, there are several possibilities:
I don't know the AVR-500. but I suspect you can select the sampling
frequency. Set this frequency to 48 Khz in order to match the sampling
frequency of the SBLive!. If not, it will be resampled by the SBLive in
order to get 48kHz... and resampled again to get 44.1kHz by software.
Ie, if you select 44.1Khz, you get the following path:
  Turntable - AVR-500 A/D - 44.1Khz Signal - SBLive! digital in -
  Upsampler - 48Khz signal - software downsampler - 44.1Khz WAV!
If you select 48 kHz, you get the next path:
  Turntable - AVR-500 A/D - 48Khz Signal - SBLive! digital in -
  - software downsampler - 44.1Khz WAV
Ie, you have one step less. Thus a more accurate digital signal is
obtained!

Cheers,
Ralph


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