*someone at another forum said those are best settings*
...to downsample needledrops...
[giant quote removed]
http://src.infinitewave.ca/ has Apple resampler in its DB.
What are the limitations of analog vinyl?
With sox I use very high, 48000hz, 95% passband, allow aliasing, 25% phase response *someone at another forum said those are best settings*
Though, I don't know what "25% phase response" is supposed to mean.
If you are using MacOS X, you can try afconvert (CLI application), which lets you to control detailed parameters of CoreAudio SRC from command line options.QuickTime is working on top of CoreAudio[…]In the past (at the time of QuickTime 7.6.5 or so), I have heard about audible aliasing problem of QT AAC sample rate converter from a HA user.I suppose it doesn't have such a serious one in the recent versions, but I cannot say for sure.
I don't know about how well Quicktime does resampling. I just wanted to comment on some things here.Mix3dmessagez, it seems you're lumping two processes together into one. Downsampling is the process of reducing the sampling rate. Encoding is -- in this context -- the process of turning a PCM signal into some other compressed format.I guessing that you're trying to convert a 96 kHz signal into a compressed 48 kHz signal. So far so good. Just pick a decent resampler for downsampling (at least sox qualifies as such) and a decent encoder for compressing the downsampled signal.[…]
Quote from: SebastianG on 29 March, 2012, 05:35:04 AMThough, I don't know what "25% phase response" is supposed to mean.It is an audiophile attempt to solve a problem we can´t hear. With telling sox to use 25% phase response you try to get rid of the "pre" ringing around fs/2 and trade it against lots more "post" ringing. This is meant to sound much better. The little detail that you alter the signal completely into the audible signal of cause doesn´t count
I am with Sebastian here that choosing parameters that preserve frequencies above 20kHz should be enough for us humans and this can be reached without violating the phase response. So even IF ringing was audible it shouldn´t be of an issue with some gentle chosen setting as you can see. […] Still i am waiting for some serious ABX results since my own told me i can´t ABX garbage from ringing [image]
If there really someone was interested in listening these files you should offer the original source so if there is an audible difference one has to check what is nearer to the original.
If you are interested, now qaac lets you play around with CoreAudio sample rate converter. If you want to try sample rate converter only, use -D option (WAV output).https://sites.google.com/site/qaacpage/https://github.com/nu774/qaac/wiki/Sample-rate-conversion
-V 127 --native-resampler=bats,127 - -o %d
(The encoder has terminated prematurely with code 1 (0x00000001); please re-check parameters)
Ah, I've forgotten one thing:You will need "--rate 44100" or something to specify target sample rate, if you want to test sample rate conversion!
Command line: "C:\Users\P*******\Desktop\desktop\qaac_1.31\x86\qaac.exe" -V 127 --rate 48000 --
want quicktime best vbr but in its quicktime present mode