Print

Print


Think carefully about this: both the clock signal and the audio data are 
being altered at each RPM; not good for analog audio, not good for 
digital.  Bottom line: clock errors, random or otherwise, simply must be 
corrected at replay.  And BTW, I love my Benchmark, too.

Mike Gray

Alex Hartov wrote:
> Hi Folks
>
> Sometimes I have to express serious doubts about what I read.  From the given URL I read the following:
>
> "Many years ago, an irate musician contacted his CD-DA replicator claiming that his latest release was of poor quality. Extensive electrical, mechanical, and listening tests by the replicator failed to disclose any flaws while the musician became angrier. The persistent replicator finally identified a defective glass mastering turntable in which one coil of its brushless DC motor had failed, causing an imperceptable once- around speed variation. After repair, the musician declared his satisfaction in the resulting high CD-DA quality."
>
> Is anyone suggesting that fluctuation in the rotating of the disc itself can have ANY effect on playback?  Do I misunderstand something?  Since the data stream is buffered the speed with which it is read from the disc cannot possibly have any effect on the playback speed which is controlled by the DAC clock.  So what is the above quote intended to convey?
>
> Alex Hartov
>
> On Nov 19, 2010, at 9:30 AM, Rob Poretti wrote:
>
>   
>> -----Original Message-----
>> From: Association for Recorded Sound Discussion List
>> [mailto:[log in to unmask]] On Behalf Of Jerry Hartke
>> Sent: November 18, 2010 8:10 PM
>> To: [log in to unmask]
>> Subject: [ARSCLIST] Listening Tests
>>
>> Input on the subject has been posted at:
>>
>> www.mscience.com/faq35.html
>>
>> Jerry
>> Media Sciences, Inc.
>>