Quote:
|
Originally Posted by w2jo What sampling rate do you guys suggest for cellphone MP3 player "ripping" from CD? Too low and fidelity will suffer and too high and you use excessive memory per music file.
thanks for any guidance you can give! |
You have to decide what's good enough for you. Obviously, higher bit rates sound better...but you won't get as much music on your microSD card.
Take the 10 minute cut "Bat Out of Hell" from Meatloaf.
56kb/s Frauhofer MP3 4.02 MB
64kb/s WMA 4.679 MB
128kbs LAME JS 9.2 MB
192kbs LAME JS 13.857 MB
JS=Joint Stereo
I've played around a bit and found that VBR files (Variable Bit Rate) DO IN FACT PLAY FINE on the 8600. Just watch the length of the filenames.
Using either Exact Audio Copy or Audiograbber, in conjunction with LAME,
you can wring much higher bit rates out of smaller files.
-V2 --vbr-new -q0 --lowpass 19.7 -b96
That's taking Meatloaf's 99.4MB .WAV file and compressing it down to 14.7MB
It shows up as a 320kb/s file, but much of the audio is actually encoded at lower rates.
-V5 --vbr-new -q0 --lowpass 18
Yields a 10.8 MB file
I put some test files on a page.
Audio Encoding Test