What music file format is recommended?
There are many types of music file formats, so it is difficult to know which one is recommended.
I have only used MP3 and WAV due to their confusion, so I don’t really know about the new music file formats that are increasing year after year. So, I took a quick look at the existing music file formats based on the information from the internet. Let’s make a list of types and extensions so that you can easily understand them later.
* The target is a music file format that can be converted from a CD (linear PCM).
○
* The format can be replaced with the term codec and the extension can be replaced with the term file format. Simply put, a codec is a device or software that can encode (encode) and decode (decode) data in both directions using one encoding method. A file format is an information device like a computer. It is the storage format of the file used in.
* The bit rate for lossy compression is 192 kbps.
* The corresponding items indicate the amount of hardware and software that the music file format supports. ◎ Many, ○ Many, ▲ Normal, △ Less, × Very few.
Currently, lossless compression is emerging as a compression format in addition to lossy compression. Irreversible compression (lossy compression) is a data compression method in which the data before compression and the data after compression do not completely match, and reversible compression (lossless compression) is the data before and after compression. It is a data compression method that exactly matches the data.
In other words, lossy compression is a poor sound quality compression method because it adds a reduction in the amount of data, and lossless compression is a good sound quality compression method because it does not reduce the amount of data. . They are all the same in the sense that they aim for high sound quality with the smallest possible size.
Now, I’m sure there are music file formats that you already know, but let’s briefly explain each one.
Mixer Image
AAC is a music file format standardized in 1997 (approved in 1999). Standardized in order to obtain high sound quality and high compression that exceeds MP3. If the bit rate is 160 kbps or less, it exceeds the MP3 upper limit frequency.
ATRAC is a voice data compression technology developed by Sony since 1992. If the bit rate is less than 128 kbps, it is above the upper frequency limit of MP3.
HE-AAC is a music file format standardized in 2003. By incorporating SBR technology into the aforementioned AAC, the playback band has been expanded and the sound quality and compression efficiency at low bit rates (128 kbps or less) have been vastly improved.
* SBR (Spectral Band Replication) is a technology for audio compression and encoding, which aims to strengthen the conventional encoding method and increase the compression rate.
MP3 is the oldest music file format standardized in 1991 (approved in 1993). Since it is old, it has a high penetration rate and there is a large amount of supported hardware and software.
