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MP3 / Re: why does the file sound better
Last post by greynol -
mp3 track will say compressed 89%
flac will say 36% compressed
whereas wave say 0 compressed
This is all about file size and nothing about quality.

[using my ears]
Your ears have clearly deceived you.
https://en.wikipedia.org/wiki/Placebo

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TOS 8. All members that put forth a statement concerning subjective sound quality, must -- to the best of their ability -- provide objective support for their claims.  Acceptable means of support are double blind listening tests (ABX or ABC/HR) demonstrating that the member can discern a difference perceptually, together with a test sample to allow others to reproduce their findings.  non-blind listening tests [...], are not acceptable
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You can read how to easily perform double blind listening tests here :
What is a blind ABX test ?
https://www.foobar2000.org/components/view/foo_abx
2
MP3 / Re: why does the file sound better
Last post by saratoga -
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Now if i convert from mp3 to flac, if i understand correctly the compression on the source will still take place, 'like winzip', the source in this case is mp3, whereas mp3 to wav there is no compression and sounds like the the file has been eq slightly.

No, you're misunderstanding.  Output is identical in both cases.

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As i listen back to the track, i can hear the slight difference between the flac and wave track, as i hone in on the drums, snares and HH [ using my ears], the wave track is slightly brighter, giving better defintion to the instruments.

Are the output PCM samples actually any different?  If they are, something is going wrong, your software is performing extra processing, etc.  If you do it correctly, the output is identical.
3
MP3 / Re: why does the file sound better
Last post by doriandun -
I understand going from mp3 to wav is no different than going from mp3 to flac, if you use dbpoweramp, right click your mp3 file [cbr 160 was used] and click on convert, then using the drop down menu, select wave, add in the info i suggested, as a recap,  uncompressed 16bit(cd) , channels (2 stereo cd), 44,1khz.

Once the process is finished [converting] , if i check the file 'hover over using mouse, a window appears showing the track info.

mp3 track will say compressed 89%; - this is source which was ripped from a cd, years back
flac will say 36% compressed
whereas wave say 0 compressed

Now if i convert from mp3 to flac, if i understand correctly the compression on the source will still take place, 'like winzip', the source in this case is mp3, whereas mp3 to wav there is no compression and sounds like the the file has been eq slightly.

As i listen back to the track, i can hear the slight difference between the flac and wave track, as i hone in on the drums, snares and HH [ using my ears], the wave track is slightly brighter, giving better defintion to the instruments.

I picked a host of files ranging from rock, funk & soul and r&b, i also used spek to check the track, all the tracks still illustrated 160kps cbr around 16khz cut off.

Put the tracks on usb stick plugged then into my music rig,  and listened to them, paying attention to the dums, synth, and and other instruments.




5
General Audio / Re: Downsampling Vinyl-Rips to CD
Last post by dragut -
From http://sox.sourceforge.net/sox.html:
Code: [Select]
Specifically, by default, SoX automatically adds TPDF dither when the output bit-depth is less than 24 and any of the following are true

What do you do with -ac 2?
And why you convert to alac? Isn't it m4a?

You read Rollin :))

And, as he also mentioned, you can omit ac 2 and some other stuffs... ac 2 (stereo) is my simple bug: I like to write everything. In your case, without ac 2. FFMPEG will guess that it is stereo and will do well too. But it will write in the log some info about all of that...
6
MP3 / Re: why does the file sound better
Last post by greynol -
I was refering to the practice from going from mp3 to wave and then that wave file to flac. as i done in this experiement.
How did you conduct said experiment?

Going from mp3 to wave is no different than going from mp3 to flac.  There is absolutely no quality loss when going from wave to flac.
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