Refractive Reflections
08-06-2016, 06:02 PM
Music files have come a long way from the traditional MP3 format, with the pursuit of people wanting higher and higher music quality (particularly with audiophiles). Some of the preferred formats have become AAC (https://en.wikipedia.org/wiki/Advanced_Audio_Coding), FLAC (https://en.wikipedia.org/wiki/FLAC), etc.
But are MP3s really that substandard nowadays? There have been some articles posting and comparing: 128K MP3 quality, 320 MP3 quality, and uncompressed WAV file (the original CD format). And they say the results are barely higher than a person guessing since most people can't recognize the difference.
http://www.npr.org/sections/therecord/2015/06/09/412271433/audio-quality-quiz-results-you-did-slightly-better-than-guessing-randomly
http://www.slate.com/articles/news_and_politics/explainer/2007/04/are_itunes_premium_downloads_worth_it.html
If you want to try it yourself, you can check them out here:
http://www.npr.org/sections/therecord/2015/06/02/411473508/how-well-can-you-hear-audio-quality
http://mp3ornot.com/
http://www.noiseaddicts.com/2009/03/mp3-sound-quality-test-128-320/
So I looked further into the MP3 format, and I learned the following cut-off bit rate frequency compressions (https://thesession.org/discussions/19642):
1411kbps >20kHz 1:1
320kbps 19.5kHz 1:4.4
192kbps 18kHz 1:7.3
160kbps 17kHz 1:8.8
128kbps 16kHz 1:11
96kbps 15kHz 1:14.7
64kbps 11kHz 1:22
32kbps 5kHz 1:44
To go further, I tried to hear what frequencies would be cut off at the following qualities, and I found a hearing test website here:
http://www.noiseaddicts.com/2009/03/can-you-hear-this-hearing-test/
The normal range of human hearing (https://en.wikipedia.org/wiki/Hearing#Frequency_range) is 20Hz to 20kHz (or 20,000 Hz), but as we get older, we hear less and less of these upper frequencies due to normal aging but much more so due to exposure to loud noise/music (earbud usage, loud concerts/clubs, loud workplace machinery). On average those under 50 can hear up to 12kHz, under 30-40 can hear up to 15kHz, and under 18 can hear up to 17kHz.
https://www.yahoo.com/beauty/try-it-can-you-hear-these-sounds-only-young-112627654778.html
http://metro.co.uk/2016/02/27/if-you-cant-hear-this-sound-youre-getting-old-5720888/
Anyways to get back on track, even though I can hear those upper frequencies, I find them actually more annoying. I find myself preferring 192K quality or even 128K quality if it has been converted from the CD source very well, especially considering it has diminishing returns as higher and higher quality is reached.
So what music file format do you prefer? And what program do you use to rip old CDs? Can you really hear the difference in quality, or do you think it's just a placebo effect as some cynics speculate about so many being able to hear the minute difference?
But are MP3s really that substandard nowadays? There have been some articles posting and comparing: 128K MP3 quality, 320 MP3 quality, and uncompressed WAV file (the original CD format). And they say the results are barely higher than a person guessing since most people can't recognize the difference.
http://www.npr.org/sections/therecord/2015/06/09/412271433/audio-quality-quiz-results-you-did-slightly-better-than-guessing-randomly
http://www.slate.com/articles/news_and_politics/explainer/2007/04/are_itunes_premium_downloads_worth_it.html
If you want to try it yourself, you can check them out here:
http://www.npr.org/sections/therecord/2015/06/02/411473508/how-well-can-you-hear-audio-quality
http://mp3ornot.com/
http://www.noiseaddicts.com/2009/03/mp3-sound-quality-test-128-320/
So I looked further into the MP3 format, and I learned the following cut-off bit rate frequency compressions (https://thesession.org/discussions/19642):
1411kbps >20kHz 1:1
320kbps 19.5kHz 1:4.4
192kbps 18kHz 1:7.3
160kbps 17kHz 1:8.8
128kbps 16kHz 1:11
96kbps 15kHz 1:14.7
64kbps 11kHz 1:22
32kbps 5kHz 1:44
To go further, I tried to hear what frequencies would be cut off at the following qualities, and I found a hearing test website here:
http://www.noiseaddicts.com/2009/03/can-you-hear-this-hearing-test/
The normal range of human hearing (https://en.wikipedia.org/wiki/Hearing#Frequency_range) is 20Hz to 20kHz (or 20,000 Hz), but as we get older, we hear less and less of these upper frequencies due to normal aging but much more so due to exposure to loud noise/music (earbud usage, loud concerts/clubs, loud workplace machinery). On average those under 50 can hear up to 12kHz, under 30-40 can hear up to 15kHz, and under 18 can hear up to 17kHz.
https://www.yahoo.com/beauty/try-it-can-you-hear-these-sounds-only-young-112627654778.html
http://metro.co.uk/2016/02/27/if-you-cant-hear-this-sound-youre-getting-old-5720888/
Anyways to get back on track, even though I can hear those upper frequencies, I find them actually more annoying. I find myself preferring 192K quality or even 128K quality if it has been converted from the CD source very well, especially considering it has diminishing returns as higher and higher quality is reached.
So what music file format do you prefer? And what program do you use to rip old CDs? Can you really hear the difference in quality, or do you think it's just a placebo effect as some cynics speculate about so many being able to hear the minute difference?