[linrad] The tradeoff of 192 kHz sampling

[Kohjin Yamada <jr1ede@xxxxxxxxxxxxxxx>]

Hello Toki and All,

AK5394A sounds really great although...

I'm not an expert in this field though one who interests in more technical
should read;
http://www.digitalaudio.dk/technical_papers/Tradeoff%20of%20192%20kHz.PDF

It summarizes;
On the other hand the study of the technical specification of the AK5394A
indicates that the S/N ratio decreases at higher sample rates as a result of
the expansion of the frequency band. Actually the S/N decreases by more than
3 dB that one would expect as a result of a doubling of the sample rate from
96 kHz to 192 kHz.

So, what?

Kohjin - JR1EDE

At 12:18 02/11/20 +0000, toki wrote:
>Hi OM.
>
>> Thanks to Pete, KC1HR I now know that there is an ADC
>> chip CS5396 from (http://www.cirrus.com).
>>
>> This is a 24 bit 96kHz stereo AD converter and there
>> is an evaluation board for it.
>>
>> The CS5396 is 20dB better than the Delta 44!!
>
>What does make you so happy ?
>Almost every companies that develop ADC device have evaluation board
>for their products.
>
>For example;
>You can get information about evaluation board of the most advanced
>AD converter from;
>
>     http://www.asahi-kasei.co.jp/akm/
>
>AK5394A is a 24 bit 192kHz stereo AD converter with s/n 123db.
>The evaluation board also has printer, coax, and optic interfaces like
>cirrus.
>I don't believe the cirrus can develop better analog device than the akm.
>
>Anyway, problem is always the cost.




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