Hi I read so many guide about how to improve the quality of the files mp3. I tried also with audacity, but when I try to modify the hz from 22k to 44k suddenly I notice that the velocity of the sound is raised. How can I normalize it? I saw that there is an option to change it, but I don’t know how to make it right
thank you so much.
You can change the sampling rate with the little number in the lower left of your edit window.
That will change the quality of the file, but won’t change the quality of the sound. We warn people repeatedly not to use MP3 in production. MP3 is a delivery format after which no change is possible (except to make it worse).
MP3 makes a new show with some parts of the original show left out. The only way to get the sound quality back is find who had the original high quality show and get a copy of that. The worst thing you can do is perform a live show and then save it as MP3. In that case, there is no high quality show to go back to.
Audacity uses WAV as the default export format because WAV (Microsoft) is supported on all three computer platforms and is high quality and uncompressed.
Hi I read so many guide about how to improve the quality of the files mp3. I tried also with audacity, but when I try to modify the hz from 22k to 44k suddenly I notice that the velocity of the sound is raised.
That’s sort-of like copying a VHS tape to Blu-Ray… You don’t automatically get a “high resolution” picture by copying to a format capable of high resolution.
You can’t un-do the damage caused by MP3 compression, but you may be able to improve some other aspects of the sound of by using equalization or noise reduction, etc., depending on what’s wrong with the recording. (But, don’t expect miracles… Sometimes you can make some improvement but you can’t turn a bad recording into a good recording.)
After making changes/improvements it will help to save in a lossless format and avoid a 2nd lossy compression step. Or if you must have MP3, it will help to use a higher quality setting or higher bitrate (kbps). Increasing the sample rate (kHz) won’t gain you anything unless you use something like an exciter effect to add high frequency information.
Or if you must have MP3, it will help to use a higher quality setting or higher bitrate (kbps).
In short, don’t fall in love with the file size. If you try to make a new MP3 in Audacity with the same tiny file sizes, the quality of the sound will suffer.
The choices are to use an uncompressed format (WAV or FLAC) so the damage doesn’t get worse, or a really high quality MP3 (Export Quality 250 or 320) where the quality will get worse, but only a little.
Never do production in MP3.
thank you so much everybody. so all the guides that I have found on internet is a fakes? like this: http://www.snaphow.com/2909/how-to-improve-mp3-sound-quality-increase-mp3-volume/ but I noticed that there aren’t quality differences (also with soundmagic in-ear) between a (for example) m4a file bitrate: 96 kb and a mp3 file with the same bitrate. am I wrong?
Let me read that back to you.
If the quality of your mix is bad because the volume of your MP3 is wrong, I can make the MP3 louder and solve the problem.
There are certainly programs out there that can cut and manage MP3 files without the sound damage increasing, but they never get better sound quality, they just don’t get worse, and they’re very limited what they can do. If you need to equalize an MP3 voice track for higher crispness, for example, those programs are not going to do that. The minute you change the sound in any way, MP3 has to generate the compression again.
Jury’s out if you simply want to change volume. I suppose if you’re really good at juggling the algorithms, you can do that without recompressing.
m4a file bitrate: 96 kb and a mp3 file with the same bitrate.
The main difference between AAC and MP3 is AAC supports copy protection.
MP3 is part of a video format, MPEG1, Layer III designed in 1991. It was the first successful general-purpose audio compression system and it had no talents beyond that. Other compression formats were designed to satisfy other requirements and get out from under Fraunhofer Institute MP3 Licensing. They don’t necessarily sound better.
That’s why Audacity doesn’t ship with MP3 generation built-in.