#Set variable mediainfo 320 kbps
#Set variable mediainfo mp4
#Set variable mediainfo software

Is that true?M4A (AKA MP4 or AAC) was designed to be the successor to MP3 so it's supposed to be better. Some websites say m4a is a smaller file size and higher sound quality compared to mp3. For audio that is highly complex throughout, the Extreme preset is likely to require around 256 kbps to achieve 'transparent' encoding. The presets aim to use the least 'kbps' necessary to achieve the target 'sound quality'. If the audio is 'easy' for the encoder to compress, the 'Extreme' preset could produce 100 kbps or even less. If you select 'Extreme', the sound quality is likely to be a bit better than 256 kbps from early encoders. If you select 'Standard' preset, the sound quality is likely to be on par with 256 kbps from early MP3 encoders. Trials in more recent years indicate that for higher bit rates, modern versions of LAME produce better quality for the same file size (or smaller file size for the same quality) as the Fraunhofer 'reference' implementation of MP3 encoding. LAME is the only major MP3 encoder that is still being developed.

Perhaps a 193 kbps vbr mp3 created in today's technology sounds as good as or better than a 256 kbps CD from years ago. Each time the audio is encoded, a bit more data is discarded and can never be recovered. will eventually degrade to trash, so does making an MP3 copy of an MP3 copy of an MP3 copy.

Just as making a photocopy of a photocopy of a photocopy. Note that 'lossy' compression is like photocopying. This assumes a 'first generation' copy of audio that has been normalized to a reasonable level. Generally considered to be 'transparent'. My rough guide to the MP3 'Preset' quality settings: Very few people can tell the difference in properly done double blind test, and I don't know anyone that can hear the difference 100% of the time.

#Set variable mediainfo 320 kbps

One can expect 320 kbps MP3 to sound as good as CD virtually 100% of the time. One can expect that 256 kbps MP3 will sound as good as CD, 99.9% of the time to 99.9% of people. The lower the bit rate, the more data has been discarded, hence lower sound quality and smaller file size. The MP3 algorithm attempts to throw away the least important (leas audible) parts first. It's called 'lossy' because MP3 encoding deliberately discards some of the data as part of the compression process. It's called 'compression' (data compression) because it reduce the amount of data. The audio on CDs is not compressed and none of the audio data has been 'thrown away'. Using the old standard of 'CD quality' (I thought it was 256 kbps but cannot seem to find a definitive answer), and considering the newer Audacity technology, does anyone know what minimum value for Media Info bit rate with the above settings would be equal to 'CD quality'?Īs Media Info says bit rate mode - variable, then a bit rate value in kbps (today I see 267 kbps with extreme, 193 kbps with standard) I'm wondering if these represent a minimum bit rate across the entire recording, or if it is more complex that that. Am I on the right track with this thought?

#Set variable mediainfo software

sound quality are equal to what a qualified audio engineer with any software would do. I did some further reading and I'm beginning to understanding that using the Audacity defaults, bit rate mode - preset, variable speed - fast, channel mode - joint stereo, with the LAME encoder, is the best method of converting wav files to mp3s available, and the reliability and file size vs.