What is Dolby Digital and what is Dolby Audio?

Categories: Entertainment & Leisure >> Movies.

Analysis: In the past, the hi-fi sound system we know has two loudspeakers on the left and right, which can make people feel a stereo sound in the left and right directions, but this is only a flat stereo sound, and cannot produce sound changes in the front and back aspects.

In order to produce stereo sound with a change in depth, two surround sound speakers are added to the rear, and through the change in the circuit, part of the signal is taken out from the left and right channels, and then released through the rear surround speakers.

Another higher level of surround sound is Dolby surround sound (also known as Dolby Stereo). This kind of surround sound is launched by Dolby Laboratories in the United States,It needs to be configured with a total of five speakers in the front left, center and right,Rear left and right,A total of four channels of information are generated,Of which the rear two speakers are just a mono signal in parallel,There is no left surround and right surround。

Dolby surround sound is called in the same sense as Dolby stereo, except that it emphasizes a sound that is different from the others. But what is Dolby Directional Logic? In fact, it is not the new Dolby stereo system, and the directional logic is for decoding technology.

Because Dolby stereo is a digital stereo sound that uses coding technology, and decoding technology uses a direction identification circuit or directional logic circuit, all sounds that use Dolby's circuit technology are called Dolby directional logic sound; Decoders with Dolby's proprietary specific decoding technology are called Dolby Pro Logic decoders.

Explanation of the Cindol.

Contain, put an end to. "New Tang Dynasty Book: The Biography of Niu Hui": Qianfu was indiscriminately selected, and the officials were many traitors and closed sections, and there were 4,000 people in the year. The rule of the Hui is just clear, and the law is restored. ”

Word decomposition Explanation of 柅 柅 ǐ A tree mentioned in ancient books with fruit like a pear. The block of wood that blocks the wheels from turning: "Tie to disturb the golden oak."

Stop: "Emotions are untouchable. A winding tool.

柅 ì is the same as "杘" in ancient times, the crank of the winding car. radical : wood; Explanation of Du Du ù deciduous tree , the fruit is round and small, astringent and edible, commonly known as "Du pear", also known as "Gantang", Tang pear".

Wood can be used as a flat pole or carved stamp. Blocking (?.)) Blockage (乮 ):

Eliminate. Du Se (乮 ). Dumen Xie passenger car reputation, anti-micro and gradual.

Apocryphal There is no base of one's own will.

Dolby refers to Dolby Audio Certification, and the certified devices sound very good!

Very authoritative. Encyclopedia: Dolby Audio certification is a certification that meets the company's and its related sound technology standards. It is to synthesize the four-channel stereo into two channels through specific coding means during recording, that is, the original left channel (L), right channel (R), middle channel (C), surround channel (S) of the four signals, after encoding into LT, RT composite two-channel signal, through the decoder to restore the encoded two-channel composite signal LT and RT to the encoded left, right, middle, surround four independent signals that do not interfere with each other, after amplification, respectively, input the left speaker, right speaker, Center channel speakers and surround speakers.

In the simplest terms, it's sound quality optimization.

Now the Dolby sound effect on the market is commonly used by businesses to optimize the characteristics of the sound quality of the notebook itself, such as you have a notebook with Dolby sound effects you can find, when you don't open Dolby, the original sound is small and like mono, there is no surround sound effect (simply put, the sound quality is poor), after Dolby is turned on, the optimized sound quality is significantly better, louder (secondly), the surround sound effect of sound quality is out (the left and right channels are obviously clear)**, the movie sound effect has been significantly improved, but don't expect subwoofers and the like, After all, the small speaker of the notebook doesn't have that ability, and Dolby sound is not a god, so he can't turn sesame seeds into the earth at once.

Headphones、Speakers can also slightly affect the effect through Dolby sound adjustment(Because the manufacturer itself is mainly only a small speaker with weak optimization,Everything else can be adjusted through win7sound。 If I had to say anything, it would be that Dolby can adjust the effect of surround sound.

Dolby is the Chinese translation of the British doctor, he set up Dolby Laboratories in the United States, and has invented many technologies such as Dolby noise reduction system and Dolby surround sound system, which has had a huge impact on movie sound and home audio.

To put it simply, it is a washing machine for sound, which removes all the noise in the sound source, so that you can hear a pure and shocking ** effect.