Re: Is 44.1 KHz sample-rate enough? Yes and No.

"Mr.T" <MrT@[EMAIL PROTECTED]
> wrote in message 
news:4817df56$0$17511$afc38c87@[EMAIL PROTECTED]
>
> "Randy Yates" <yates@[EMAIL PROTECTED]
> wrote in message
> news:m3tzhkm5yc.fsf@[EMAIL PROTECTED]
>>   > So 24-bits can withstand a max of 144 dB without clipping.
>>
>>   The FILE can, but NOT any hardware!!!!!!!
>>
>> > But there is NO available hardware
>>
>> You didn't say "available" hardware---you said ANY hardware.
>
> Strange then that you have included it above.
> In any case I certainly never said "no possible FUTURE hardware" did I?
> IF you know of ANY available hardware with 144dB DNR then just tell us, 
> and
> we can stop arguing.
> Surely you have something better to complain about though?

Fifteen years ago I attended a seminar put on by Crystal Semiconductor to 
talk about their A/D and D/A converters. I was primarily interested in
audio 
applications, but they also discussed instrumentation devices. These were 
sigma-delta noise-shaping devices capable of true 24-bit resolution (in 
truth, their 24 bit audio devices were not, at least at that time).
Anyway, 
they still had a problem with the instrumentation devices at the LSB
level. 
It seems the thermocouple effects of simply soldering the parts together 
caused a temperature dependent DC offset which could not be ignored, even 
though the converters were self-calibrating. From that, it became obvious
to 
me that 24 bits (audio or not) was getting to the theoretical level of 
dimini****ng returns, requiring near superhuman efforts to keep the 
resolution stable. I doubt the theoreticals have changed much in fifteen 
years.