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| Topping E70V filter response http://www.dcaudiodiy.com/phpBB3/viewtopic.php?f=5&t=2289 |
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| Author: | Stuart Polansky [ January 4th, 2024, 7:50 pm ] |
| Post subject: | Topping E70V filter response |
Found this interesting for anyone choosing which filter to use if you have a Topping E70V. I know that several people in the group have one. https://www.audiosciencereview.com/foru ... 88/page-59 Attachment: E70V filter-response.PNG [ 170.78 KiB | Viewed 34506 times ] |
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| Author: | FerdinandII [ January 4th, 2024, 8:17 pm ] |
| Post subject: | Re: Topping E70V filter response |
IMHO This is the main benefit from higher sampling rates. Lower order (slow...) filters can be used without attenuating audible frequencies. I can think of only a very few cases where subjective reviewers have preferred the sharp (fast...) filter choice. |
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| Author: | HAL [ January 4th, 2024, 8:21 pm ] |
| Post subject: | Re: Topping E70V filter response |
What would also be interesting is if they posted the impulse response of the AK4499EX DAC. The first filter is a linear phase filter with pre-ringing. That does not show up in a frequency response plot. That is a non-causal filter that is not particularly good for music. The second filter is a minimum phase filter (Slow Roll-off) that is very good. The others are variants with one being a minimum phase apodising filter. Fun with filters. |
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| Author: | FerdinandII [ January 4th, 2024, 8:47 pm ] |
| Post subject: | Re: Topping E70V filter response |
HAL wrote: What would also be interesting is if they posted the impulse response of the AK4499EX DAC. The first filter is a linear phase filter with pre-ringing. That does not show up in a frequency response plot. That is a non-causal filter that is not particularly good for music. The second filter is a minimum phase filter (Slow Roll-off) that is very good. The others are variants with one being a minimum phase apodising filter. Fun with filters.  The audioscience guy has a very warped and limited set of criteria for what's good and what's bad. Frequency response isn't everything...!! |
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