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RE: A question about filters

Posted by Todd Krieger (A) on July 21, 2015 at 20:07:33

In Reply to: A question about filters posted by beppe61 on July 21, 2015 at 01:24:48:

i have a question about filters.

"It is quite clear to me that digital filters have an impact on sound quality, and maybe often a negative impact."

It even depends on the recording as well.....

"I read that SACD allows for the use of analog filters."

Actually any digital medium allows for that.......

"I know that you are against upsampling ... but could it be that upsampling the cds to sacd format the benefits of using analog filters could be superior to the drawbacks of the upsampling process ?"

Upsampling implies the use of digital filters.... They're inseparable. Although analog filters can still be used as "post filters", after the upsampling conversion.

If the CD is upsampled via DSD (which I think is compatible w SACD conversion), it's synchronous.... The upsampling I don't like is "asynchronous" conversion, where the conversion is prone to jitter and noise artifacts becoming embedded into the signal. DSD does not have this problem. (Remember, your resolution for CD playback is still 16/44, no matter how it's upconverted.)

"I read also that SACDs tend to sound a little flat and undynamic, but quite natural. For me this should be a priority."

Whatever works.... I don't like SACDs because they become unbearable after 10 minutes of listening.........

"I like natural e not synthesized sounds ... natural to me means real.
Many chips these days i guess upsample cds to sacd ... but i am not sure."

Unless it's a DSD conversion, I don't think it "upsamples to SACD".... But then again, I personally wouldn't want it "upsampled to SACD".... The end result is the disadvantages of both CD and SACD (CD resolution with extra RFI), with the advantages of neither.......

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