What are encoding, codec, bit rate, sample rate?
Basic DTM knowledge
Not limited to DTM people
Encode
encoder
codec
Bit rate
Sampling frequency
I think you hear it often
Do you only know by nuances?
So I hurried up and checked it out.
Table of contents that you can fly with a touch ↗︎
❤︎1, encode/decode/encoder/codec
❤︎2, Bit rate / Sampling rate
❤︎3, what is the standard file format?
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❤︎1, encode/decode/encoder/codec
As for the music files,
Coding :
File format conversion
・ WAV to MP3
Decode :
restore encrypted version
* Encoding can also refer to the compression of the file itself.
In that case, decoding also means returning the compressed data to an “audible” state.
Thank you for your comment <(_ _)>
Encoder/Decoder :
Software and equipment that encodes/decodes (encoder/decoder)
Codec :
how to convert file format
There seems to be a lossy compression method and a lossy compression method… In
other words, it seems that there are some formats that can be decoded and others that cannot be decoded
At the bottom of the codec page of the wiki it is written in detail
・MPEG audio codecs are irreversible compression methods, that is, they cannot be decoded…
・Apple Lossless (Apple Lossless Audio Codec, Apple Lossless): Decoding is possible with the lossless codec compression method installed in iTunes, QuickTime, etc.
・Windows Media Audio (WMA): It appears that you can choose which format the codec should have installed in Windows Media Player.
I checked the source on the wiki etc.
Encryption, also called encryption, is the conversion of digital data into a code according to the purpose according to certain rules. For details on the encoding method, please refer to the encoding method.
On a computer, it can also refer to file compression (also called “high-efficiency encryption”) or encryption. In this case, the function (software or hardware) that encodes is called an “encoder”.
Decode is also called decode and is an antonym for encode. To restore the encrypted information. The function to be decoded is called the “decoder”. Depending on the device that communicates and records information, it may be equipped with both an encoder and a decoder, and such bidirectional conversion function, conversion device, algorithm or the like is called a codec.
In a computer, the interpretation of a given machine language as an internal representation is called decoding, and its logic circuit is called a decoder. The entire mechanism that collects instructions and data and sends information to the arithmetic unit, centered on the decoder, is called the interface.
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A codec is a device or software that can encode (encode) and decode (decode) data bidirectionally using an encoding method. It is also used as a term to refer to the algorithm for that purpose.
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Hmmm…
