What does Dolby sound mean?
In the past, the hifi sound system we know has two speakers on the left and right. This system can make people feel stereo in left and right directions, but this is only flat stereo and can’t produce front and rear sound changes.
To produce stereo sound with a sense of depth, two left and right surround speakers are added to the rear, and through circuit changes, some left and right channel signals are extracted, and after processing , released through the surround back speakers.
Another higher level of surround sound is Dolby Surround (also known as Dolby Stereo).
This type of surround sound was introduced by Dolby Laboratories in the US. It must be equipped with five speakers in the front left, center and right, and left and right in the rear, generating a total of four channels of audio information. left. , center, right and surround, of which the two rear speakers are only a parallel connection monaural signal, with no distinction between surround left and surround right.
The name of Dolby Surround is the same as Dolby Stereo, but it only emphasizes the sound that is different from other methods. But what is Dolby Pro Logic? In fact, it is not a new Dolby stereo system, the directional logic is for decoding technology.
Since Dolby Stereo is a digital stereo that uses encoding technology, and the decoding technology uses a direction recognition circuit or a directional logic circuit, any sound that uses this circuit technology from Dolby is called Dolby Pro Logic sound;
A decoder with a specific decoding technology owned by Dolby is called a Dolby Pro Logic decoder.
Of course, true high-fidelity digital stereo sound can only be heard when playing software recorded in Dolby Sound using an AV amplifier with Dolby Down Logic capabilities.
Dolby sound phone
Xiaomi mobile phones have Dolby sound effects, take Xiaomi as an example:
After setting the sound quality to still good, let’s take a look at where this setting is.
