you need
a 3,5mm stereo plug
a cable
a PC with soundcard
you need a measurement software like
http://www.pmgrp.com/prod01.htm#SpectraLAB
look if they have a trial period.
I would not wonder if some of those reclockers etc. increase THD.
NO.
I don't think so. When the soundstage opens in front of you in height , width , depht and you localize the instruments expecially in live performances , the precision of the orchestral positions are, again , close to you that is not distorsion.It is the DAC that has better resolution at its imputs .
I have not prejudices regarding soundcards but I am not interested in a computer (sampling) measure sistem.
I don't think so. When the soundstage opens in front of you in height , width , depht and you localize the instruments expecially in live performances , the precision of the orchestral positions are, again , close to you that is not distorsion.It is the DAC that has better resolution at its imputs .
I have not prejudices regarding soundcards but I am not interested in a computer (sampling) measure sistem.
Its not a sampling system to do recording but to run some numerical analysis on the data. Its not better and not worse than a standalone Analyzer with the same sampling rate as your soundcard. Its is cheap and gives very good measurements. And i suspect other reasons behind the fact many people seems to dislike measureing and post what they measured.
For comparison: same measurement setup and CD670 (4FS TDA1541)
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That's fine . I will try the soundcard ASAP.If it is that cheap.
I think distorsions with dacs ( beside theyr sound signature) are a great matter of noise and over all the quality of the oscillator in the CDP and close to the DAC. Try a Tentlabs clock and you will see yourself , and ear of course.
Over measures it is the pleasure to listen a CD that is close (I repeat myself) to a warm tape regardless of bits/sampling frequencies etc.In this last regard the recloker make a good job.At least for that fiew seconds when the music takes you away.
I think distorsions with dacs ( beside theyr sound signature) are a great matter of noise and over all the quality of the oscillator in the CDP and close to the DAC. Try a Tentlabs clock and you will see yourself , and ear of course.
Over measures it is the pleasure to listen a CD that is close (I repeat myself) to a warm tape regardless of bits/sampling frequencies etc.In this last regard the recloker make a good job.At least for that fiew seconds when the music takes you away.
Re: pulse transformer for spdif
Till,
Check, out this input it's work well fine, and cap be optimizes even better. I get you away from connecting grounds. OF course, the player needs to have a transformer also to be optimum.
I guess the out of production PS audio CD transport image was removed. This product has not been out of production a long time and should have not been removed.
till said:
Bricolo said:
Till,
Check, out this input it's work well fine, and cap be optimizes even better. I get you away from connecting grounds. OF course, the player needs to have a transformer also to be optimum.
I guess the out of production PS audio CD transport image was removed. This product has not been out of production a long time and should have not been removed.
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Soundcard is "Creative SB live!" what was the cheapest PCI soundcard they had when i got it. Those SNR numbers are very strange to me, i dont understand what causes them. Its very sensitive to the satellite tuner card in the PC. And the numbers is really bad compared to datasheet numbers. I will see if it changes when i make shielding and groundplane when i have material for this.
till said:
Your right it pick up noise from the PC. Also, I don't believe their specification, and I have seen magzines dispute Creative Labs spec's.
High End SOUND CARDS
http://www.esi-pro.com/viewProduct.php?pid=5&page=1
till said:
can you show me how is the noisefloor on the line input? (nothing on the line in jack, recording set to line in and 100%)
Here's mine, with a big averaging (300). Not that bad IMO
Till, also note that the SB Live is HEAVILLY optimised for 48kHz, and the internal 44.1->48 sample rate conversion isn't very good. If you set spectralab to work in 48kHz the results will be better.
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till said:
even in 44.1 your Live has a better snr (5dB) than mine
except those peaks. But I don't know what causes themin 44.1, mine is a lot worse
try to update your drivers, if you want to test something better use those
http://www.kxproject.com/
but they are much different too
I'm using spectralab 4.32.17 30day trial
The Philips does have 0,0018% points THD less and 2,374 dB more SNR.
SNR maybe because of the metal case?
I don´t say there is much difference, i only post the measurement data to have some references to the AD1865 DAC with same measure setup. The data is reproduceable, i measured more than once. The THD figure is very stable dependend on the DAC and I/V used. The SNR seems to be more sensitive to noise from computer and surrounding. With more affords i measured also better SNRs with the CD PRO 2.
Bernhard, what do you expect with the -60dB? as you see SNR is not very high, i would need a more sensitive soundcard input or i need to put a preamp between.
RE: measurements
Why some people use the trial version of Spectra Lab soft if we have this GREAT software, and it is FREE! Take a look at the website how many good companies use it:
RightMark Audio Analyzer 5.3 http://audio.rightmark.org/
Why some people use the trial version of Spectra Lab soft if we have this GREAT software, and it is FREE! Take a look at the website how many good companies use it:
RightMark Audio Analyzer 5.3 http://audio.rightmark.org/
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