Support and General Use > Audio Playback, Database and Playlists

Which audio format do you use with Rockbox?

<< < (2/3) > >>

gevaerts:

--- Quote from: wilsonsamm on April 03, 2012, 09:33:28 AM ---MP3 files are just downsampled using LAME, because I have read advice against transcoding from one lossy format to another.

--- End quote ---

What's a bad idea is transcoding from lossy to lossy. It's not better if both ends use the same codec.

wilsonsamm:

--- Quote from: gevaerts on April 03, 2012, 09:34:42 AM ---
--- Quote from: wilsonsamm on April 03, 2012, 09:33:28 AM ---MP3 files are just downsampled using LAME, because I have read advice against transcoding from one lossy format to another.

--- End quote ---

What's a bad idea is transcoding from lossy to lossy. It's not better if both ends use the same codec.

--- End quote ---

That advice I read (I can't find it again now), but it said that transcoding between lossy formats is worse because (for example) Ogg and MP3 will each be leaving out different data. In that way, an MP3 made from an Ogg file will have more loss than an MP3 that's made from an MP3. Is this wrong?

saratoga:

--- Quote from: wilsonsamm on April 03, 2012, 10:11:22 AM ---That advice I read (I can't find it again now), but it said that transcoding between lossy formats is worse because (for example) Ogg and MP3 will each be leaving out different data. In that way, an MP3 made from an Ogg file will have more loss than an MP3 that's made from an MP3. Is this wrong?

--- End quote ---

Yes that is wrong.  Its equally bad to do MP3 > Ogg as MP3 > MP3. 

FWIW I used to transcode high bitrate lossy to low bitrate for portable use to fit more files, but now theres no point given how cheap flash memory is.

prankstare:

--- Quote from: saratoga ---I think you misunderstand what a binaural beat is.  Your brain can certain decode the difference signal between the two frequencies.  Check out the wikipedia article:

http://en.wikipedia.org/wiki/Binaural_beats#Acoustical_background
--- End quote ---


http://www.youtube.com/watch?v=IrdVEBbskZQ

I am no audio engineer but if you take a little bit of your time to watch the video (jump to @3:45 to cut the blablabla thing), it shows exactly what I mean. I may not fully understand, theoretically what binaural beats are, but we can have a glimpse through actual experience. Just put your headphones, go to 3:45 in that video and listen carefully. You'll notice that when he feeds some Hz difference in each channel, the resulting sound is different, but only inside our minds (if you remove one side, you'll notice it's still pure signal sound and no beats). I know this isn't the best place to discuss such a subjective/philosophical thing but, all I am here to say is that we can look at graphs, numbers, sound waves or even listen to actual audio, but what reality is we can never fully grasp or understand.



--- Quote from: saratoga ---FWIW I used to transcode high bitrate lossy to low bitrate for portable use to fit more files, but now theres no point given how cheap flash memory is.
--- End quote ---


Agreed. I just don't use lossless on my Clip Zip cause for a 32GB flash memory card it's still a bit spacey, but lossy Musepack @350kbps gives enough 'quality headroom' to make it up (on an sub-conscious level, perhaps). Haha! ::)

Nick H.:
FLAC.

Navigation

[0] Message Index

[#] Next page

[*] Previous page