Finally someone admits it. We are two with me. At least.I'm on the very comfortable position here as I do not hear differences between filters
My WiiM Pro Plus (+) tests
- Thread starter onlyoneme
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That is why, in the absence of a clear sign, I defaulted to the most mathematically correct solution - "Linear fast rolloff". See http://archimago.blogspot.com/2022/06/review-smsl-do100-dac-dual-ess.html and the aforementioned https://www.audioreviews.org/reconstruction_filters_dummies/Three! Checked all my available filters during the afternoon. Not even a feeling although I tried quite hard to find one
steadyshot
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Human ear is most sensitive to pre ringing that is why most dacs prefer minimum phase . No need to reinvent the wheel
Three! Checked all my available filters during the afternoon. Not even a feeling although I tried quite hard to find one
Brantome
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steadyshot
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You should admit that the "awareness" of one solution that is formally better than another, recognizable or not at a glance, takes to more peaceful mood, better if with a good coffee taste in mouth...If find the coffee filter is the most beneficial
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steadyshot
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Break it to continuous posts?There is a limit of 10 attachments included... How can I write my review without graphs?
I did just like you did choosing “Fast Linear”. By the way it’s the default filter of my SMSL 500 MKIII.
However i would add that if someone changed my filter without my knowledge i would never realize it
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The limit of 10 has been extended to 20 so that should be sufficient. Please try again.There is a limit of 10 attachments included... How can I write my review without graphs?
Thank you.
steadyshot
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@onlyoneme . Can you explain the concepts of intermodulation distortion and harmonics and then make the connection to the measurements especially to the part that you mention that lower frequency harmonics are higher than expected.
Harmonic distortions are unwanted effects of the single tone, with the frequencies being integer multiplications of the fundamental one.
IMDs happens with multitones and have frequencies being sums or differences of base tones.
Those mentioned harmonics are based on the 60 Hz fundamental, which is a part of the SMPTE IMD test, but these ones are not IMDs. They would be visible also for a single sine signal of low frequency. I was a bit surprised with the level of those harmonics, in a perfect scenario they shouldn't exist there at all.
steadyshot
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What is the level of 60hz harmonics in a single sine signal for your Rme dac? Are they existent ?
It's lower. I will prepare some comparisons with ADI-2 DAC later.
steadyshot
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I have read that all dacs exhibit more or less harmonics as integer multiples of 60hz which is a byproduct ( side effect) of dac conversion . They add distortion but it is not absolute that they are always harmful to sound quality . It depends on how high the harmonic content and also on the structure of harmonics ( odd harmonics vs even harmonics ) . But sure the lowest they are the more correct the signal output is.
