What is a Bluetooth codec?
The headphone jack has disappeared from the iPhone and wireless headphones have quickly become mainstream.
Bluetooth is used for wireless headphone communication, and the difference in the Bluetooth codec affects sound quality and sound delay.
This article describes the Bluetooth codec according to the following items.
What is a Bluetooth codec?
Main Bluetooth codecs and their characteristics
How to check the Bluetooth codec of your computer / smartphone
Please refer to that.
3 Smartphone / PC Bluetooth codec support information and confirmation method
3.1 How to check the supported Bluetooth codec on your Android smartphone
3.2 How to check the compatible Bluetooth codec on iPhone / iPad
3.3 Bluetooth codec compatible with Windows PC
3.4 Bluetooth codec for Mac
4 Choose the Bluetooth codec that suits your purpose
What is a Bluetooth codec? Audio compression method
The Bluetooth codec is a “method of compressing audio data”.
When sending voice data from smartphone or PC to wireless headphones, etc., the amount of data is large and time consuming and delays occur.
Compression technology solves this problem.
There are several compression technologies, each with different delay, compression efficiency, sound quality, etc., and the general term for these compression methods is “codec.”
Delay, compression efficiency, and sound quality differ by codec
There are three main differences depending on the Bluetooth codec.
delay
Compression efficiency
Sound quality
“Delay” represents the time lapse between the sender and the receiver.
When watching a video, the smaller the lag, the smaller the gap between the video and the audio, and the more natural the video can be seen.
“Compression efficiency” indicates how efficiently the audio data can be compressed, and the higher the compression efficiency, the smaller the amount of data.
Codecs with high sound quality, low latency and high connection stability, such as aptX LL and aptX adaptive, can be said to have high compression efficiency.
The “sound quality” will be described later.
