Music Compression Test
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Music Compression Test
I just purchased a Garmin 360, and I was transcoding my library for portable use in the S2K. I thought I might post up the stuff I did with an audio sample that you can take a listen too. http://www.filedropper.com/lummetest
Device I use now: Garmin 360
Total audio quality I end up with: great
Number of files: not so many on an SD card.
Old device: VX6700
Total audio quality I end up with: great
Number of files: more than I expected on an SD card
My old VX supported AACplus files with some open source software. The new Garmin just does MP3s, so I decided to try out how much better LAME MP3 has gotten over the years.
My previous experience with LAME was that 128 CBR was all I found acceptable. Check out the attached file here to check out what you think of my test yourself:
http://www.filedropper.com/lummetest
You will probably need Winamp or something to play the m4a file.
The one track inside that zip file is a Kahvi Creative Commons release, check out more info on their site:
http://www.kahvi.org/
What I thought of the test
Original (192kbps MPEG1 CBR) - Yeah, a FLAC might have been clearer, but through my studio headphones, sounds perfect to me.
96kbps ABR LAME MPEG1 - Sounds indiscernible to me. My current choice. The Average BitRate setting allows a smaller file size, while allowing it to peak higher bitrates when it needs more clarity.
50kbps ABR LAME MPEG1 - Not bad, but I can tell the difference.
32kbps ABR LAME MPEG1 - Terrible. Made this just to compare to AACplus
32kbps CBR NERO MPEG4 AACPLUS - Sounds indiscernible to me. The file format I used to use but can't now. Read up on this format if your are interested, its been around a while and more of you use it than you know. I think Sirus/XM uses it solely at like 40kbps or something beamed strait from the satellite.
All files encoded with http://mediacoder.sourceforge.net/
Device I use now: Garmin 360
Total audio quality I end up with: great
Number of files: not so many on an SD card.
Old device: VX6700
Total audio quality I end up with: great
Number of files: more than I expected on an SD card
My old VX supported AACplus files with some open source software. The new Garmin just does MP3s, so I decided to try out how much better LAME MP3 has gotten over the years.
My previous experience with LAME was that 128 CBR was all I found acceptable. Check out the attached file here to check out what you think of my test yourself:
http://www.filedropper.com/lummetest
You will probably need Winamp or something to play the m4a file.
The one track inside that zip file is a Kahvi Creative Commons release, check out more info on their site:
http://www.kahvi.org/
What I thought of the test
Original (192kbps MPEG1 CBR) - Yeah, a FLAC might have been clearer, but through my studio headphones, sounds perfect to me.
96kbps ABR LAME MPEG1 - Sounds indiscernible to me. My current choice. The Average BitRate setting allows a smaller file size, while allowing it to peak higher bitrates when it needs more clarity.
50kbps ABR LAME MPEG1 - Not bad, but I can tell the difference.
32kbps ABR LAME MPEG1 - Terrible. Made this just to compare to AACplus
32kbps CBR NERO MPEG4 AACPLUS - Sounds indiscernible to me. The file format I used to use but can't now. Read up on this format if your are interested, its been around a while and more of you use it than you know. I think Sirus/XM uses it solely at like 40kbps or something beamed strait from the satellite.
All files encoded with http://mediacoder.sourceforge.net/
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