Bluetooth sound bad?
Today, everything is connected wirelessly and the wave is running in the world of audio.
In particular, the technological progress of Bluetooth headphones and speakers is wonderful, and “wireless sound quality deteriorates” is said to be a thing of the past.
But is that true?
From a “convenience” standpoint, Bluetooth is very good. The nickname of smartphones is outstanding. However, when I consider it from the “sound quality” aspect, I am skeptical of its ability.
Therefore, this time, we will thoroughly investigate Bluetooth. How was Bluetooth born and what about the latest Bluetooth? We will introduce the good and bad sound quality.
Bluetooth overview
Bluetooth® is one of the short-range wireless communication standards for digital devices. It consists of Bluetooth Basic Rate / Enhanced Data Rate (BR / EDR) and Bluetooth Low Energy (LE).
The frequency channel used is the 2.4 GHz band. It is used in various products, mainly smartphones, PC-related devices, headphones, and speakers.
Especially in recent years, Bluetooth headphones have become very common in the city. The reason for its widespread use is that you can listen to the music played on your smartphone without a cable, and if you use Bluetooth, the headphones will not get tangled in the bag.
Bluetooth is also very popular when making calls while driving. If it is a hands-free call, you will not be charged with violating the use of mobile phones. Therefore, Bluetooth headset microphones that are very easy to use are very popular.
In addition, it is used for wireless communication of low-speed digital information, such as PC mouse and keyboard, such as notebook computers, text information, and voice information on mobile phones, PHS, smart phones, and tablets.
2. Derived from the name of Bluetooth
Bluetooth directly translates to “blue teeth”.
So why are the teeth blue? And what is the reason for that mark with the Bluetooth logo?
This chapter introduces the origin of the Bluetooth name and logo.
2-1. The godfather is Ericsson
The father of the name “Bluetooth” is an engineer from Ericsson (Telefonaktiebolaget LM Ericsson) in Sweden. A telecommunications equipment manufacturer based in Stockholm, Sweden, is a well-known manufacturer of fixed land equipment for mobile communications (mobile phones) in the world.
Approximately 20,000 engineers are engaged in research and development in 17 countries around the world, and the company is said to account for about 15% of annual R&D expenditures. Notably, GSM is used by more than 80%. of the world’s mobile phones and is practically the worldwide standard technology for wireless communication.
There is also a Japanese corporation called “Ericsson Japan Co., Ltd.” in Japan, which primarily provides ground binding equipment to SoftBank Mobile and EMOBILE. Due to such circumstances, Ericsson Japan Co., Ltd. has signed a helmet sponsorship contract with Fukuoka SoftBank Hawks since the 2012 season.
2-2. The motive is the king of Denmark “Harral Sprout Gormson”
Harald Blåt and Gormsen / Haraldr blátǫnn Gormsson is the first Danish king to negotiate a bloodless integration of Norway and Denmark to unite culture. The chronicle “Chronicon Roskildense” written in Latin around 1140 has the nickname of “Blue Tooth (in Danish: Blåtand, in English: Bluetooth)”, for which the King of the Blue Teeth There is a story that came to be called.
At the World Heritage site “Jelly Stones”, there is a runestone monument marking the achievement of the unification of Denmark by Haral. And, in relation to the achievements of Ericsson engineers, starting from the idea that “it will be a wireless communication standard that can be used in common in various fields regardless of the difference in industry and device”, Blåtand lo I called “Bluetooth” which is an English transliteration.
