Welcome Guest ( Log In | Register )

LAME's resampling leaves something to be desired
post Oct 15 2012, 20:16
Post #1

Group: Members
Posts: 30
Joined: 14-October 12
Member No.: 103838

http://shibatch.sourceforge.net/ is a good resampler. It beats lame in quality every time. Here is an example:

Yes I retested Baba O'Reilly and it sounded noticibly better with ssrc.

I did

FLAC 88.2 > lame.exe -S --noreplaygain -b 32 --lowpass 10 --resample 24 - %d
FLAC 88.2 > WAV > ssrc.exe --rate 24000 --bits 16 > lame.exe -S --noreplaygain -b 32 --lowpass 10 - %d

in ABX and got 14/16 (0.2% prob of guessing). I was hearing a whole different type of artifact that I have either never heard before or just never listened for before. I was 5/2 up when I started listening to the bass drum and it just sounded fuller, warmer and louder in ssrc. It was then that I noticed that there was a shrill artifact at about 9 kHz at the same time as the drum beat in question. It was obvious in both files, but louder in the LAME version. Up until now the bass drum "masked" it, "masking" is seriously like an aural illusion, that bass drum sounded fine before I heard the shrill in one and then I heard it in the other, I was dumbfounded! After that I just listened for that beep and the louder one was LAME. LAME should really look into their resampler, a lot of people are downsamping high res FLACs these days!

I feel like I did the first time I discovered that I had a blind spot on my retina that I could "discover" at will with carefully engineered designs and some ordinated displacement of said designs. Discovering the nature of my aural blind spots first hand I can only describe myself as feeling enlightened!

Maybe that shrill noise is due to a crappy lpf in LAME?


ssrc is foss, maybe the LAME devs would like to copy some of it's code?
Go to the top of the page
+Quote Post

Posts in this topic

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:


RSS Lo-Fi Version Time is now: 7th October 2015 - 10:14