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Filter brewing for the Soekris R2R
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Old 16th April 2015, 09:05 AM   #751
oneoclock is offline oneoclock  Europe
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I do not. I listening more body in bass music in general.
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Old 16th April 2015, 09:32 AM   #752
zfe is offline zfe
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Originally Posted by spzzzzkt View Post
Yes it is optional. Not saying it is harmful to use overlap as I know this can help - rect window and fft size 128 with overlap x64 has same level of blurring as rect window with fft size 32 and no overlap.

More that the effect only occurs at a narrow range of settings.
As far as I understand it (I am not yet 100% sure about it):
Short fft size gives you poor resolution frequency wise.
e.g. 32 gives you 16 (exact) samples in the frequency domain spread in the range up to fs/2 . Everything you see more than that on your graph is just a interpolated value, e.g. if something happens there in real you will not see it.
On the other hand short fft size gives you more accurate information at which time something happens. Overlapping slices might help a bit, but not really as the real problem is that the location in times is averaged out in longer ffts.
You have to decide what is more important you can not have both perfect.
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Old 16th April 2015, 11:23 AM   #753
spzzzzkt is offline spzzzzkt  Australia
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Originally Posted by oneoclock View Post
I do not. I listening more body in bass music in general.
Having a look at the track in RX, I'd say the mastering was messed up. One track is -2.6dB on the other. The peak in the average frequency response is 50Hz with most of the energy in the track under 250Hz. I guess that is why it sounds like the bass is a bit overcooked.
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Old 16th April 2015, 01:51 PM   #754
ylingf is offline ylingf  United States
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C128 and C128_100 sounds really good to me. No overblown bass.
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Old 16th April 2015, 02:09 PM   #755
ristar is offline ristar  Singapore
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Originally Posted by ylingf View Post
C128 and C128_100 sounds really good to me. No overblown bass.
I'm actually unable to tell the difference between the two... wondering if I'm having some fatigue with all the changes. But definitely the only two nyquist filters that better the V4 ones for me.
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Old 16th April 2015, 02:14 PM   #756
hop.sing is offline hop.sing  Europe
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Short update on how I hear the new filter.
128_100 sounds most natural to my ears so far. The IPv4 _30 sounds a little plastic in the treble compared to the new one and the bass seems to gel with the other frequencies a little better, too.
Heard while listening to some Enrico Rava (ECM records). What a nice dac we have here and I am still with the AC power supply.
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Old 16th April 2015, 02:30 PM   #757
ylingf is offline ylingf  United States
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I agree. For me, the top two filters are 128_100 and NewNOS. they are quite similar to each other. NewNOS seems to sound a little thicker. 128_100 cleaner. But I am just not sure which one is more accurate. Is the thicker sound from NewNOS an artifact of the aliases? Wish there's a way to figure out.
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Old 16th April 2015, 02:43 PM   #758
oneoclock is offline oneoclock  Europe
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Youtube not only compresses the audio bitrate, also processes and compresses audio dynamics. Especially bad in treble and bass. Donīt use Youtube music to evaluate a DAC.

https://productforums.google.com/for...ve/JzPf2jw9wQg
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Old 16th April 2015, 07:33 PM   #759
spikestabber is offline spikestabber  Canada
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Quote:
Originally Posted by oneoclock View Post
Youtube not only compresses the audio bitrate, also processes and compresses audio dynamics. Especially bad in treble and bass. Donīt use Youtube music to evaluate a DAC.

https://productforums.google.com/for...ve/JzPf2jw9wQg
Gotta keep that authentic FM radio feel to keep the record labels happy I suppose, making it no substitute to the real album.
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Old 16th April 2015, 09:09 PM   #760
spzzzzkt is offline spzzzzkt  Australia
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Quote:
Originally Posted by oneoclock View Post
Youtube not only compresses the audio bitrate, also processes and compresses audio dynamics. Especially bad in treble and bass. Donīt use Youtube music to evaluate a DAC.

https://productforums.google.com/for...ve/JzPf2jw9wQg
Best quality you are likely to get is 192kbs AAC if you chose 720HD "videos".
At the default resolution it's more likely to be 128kbs AAC.

see:
YouTube Audio Quality Bitrate Used For 360p, 480p, 720p, 1080p, 1440p, & Up : H3XED
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