Views: 0 Author: Site Editor Publish Time: 2023-09-26 Origin: Site
What is a home theater surround sound system
Audio equipment not only requires professional technical quality inspection to make it meet certain technical indicators, but also requires subjective evaluation of sound quality through human hearing. This is the listening evaluation or sound quality evaluation. In the home theater, you can feel the real sound surround How the sound comes out is briefly introduced below:
Surround sound systems usually have surround speakers installed at the back of the audio-visual room, but it does not mean that two speakers are installed at the back of the audio-visual room to have surround sound effects.
If you just connect two speakers from the front and a pair of speakers in parallel to the back, then the sound emitted by the latter is exactly the same as the former. Without surround sound decoding processing, it cannot really be called a surround sound system.
So, what is the decoding part of surround sound effects?
Video discs or video tapes, two of the current main home video software, have only two left and right channel signal spaces for sound. However, the simplest Dolby matrix encoding generally requires four sets of signals: left, right, center and surround. How can I do this? How to "stuff" it into software that only has two-channel space? The answer is to insert the center and surround signals into the original left and right channel signals.
The center channel signal is the information owned by both the left and right channels, while the surround channel signal is the difference between the two. In other words, the signal of the left and right channels that are in phase is the center channel, and the signal that is out of phase is the surround channel. In this way, the original four-channel signal is squeezed into two channels, and the function of the surround sound decoder is to separate (decode) the center and surround signals mixed into the left and right channels, and then transfer them to each channel. The channel's amplifier uses power to amplify and drive the speaker.
Therefore, the sounds emitted by the surround speakers, the center channel and the two left and right speakers in front are different. Don't think that you can simply connect another set of speakers at the back and send the signals from the left and right speakers in front in parallel. You can get the surround sound effect.
For home theater, the decisive factor in home theater must be the subwoofer. It can be said that the subwoofer is the soul of the entire home theater. Why do you need a subwoofer?1. In audio, the low-frequency part consumes the most power when reproducing it, especially the low-frequency part below
Simply share some knowledge about tube amplifiersTube amplifiers operate at high voltage and low current. The screen voltage of the final power amplifier tube can reach 400-500V or even thousands of volts, while the current flowing through the tube is only tens to hundreds of
Three Factors Affecting the Gallbladder SystemDoes the integrated tube amplifier need to add a preamplifier? Many enthusiasts have such questions. There are three factors here. One is whether the signal output by the audio source is large? The output signal of many foreign CD players is relatively s
Do you also like to listen to vacuum tube speakers? The pleasant sound it produces comes from the vacuum tube circuit, and many factors are taken into consideration to achieve such a pleasant sound quality. The author will share with us his experience in self-study of vacuum tube circuit technology,
Why tube amplifiers don’t deserve to be called “hi-fi” audio equipment?What should I do if the final sound of the amplifier is unpleasant?Use tubes for the preamp!Once a power amplifier uses vacuum tubes, it basically falls out of the category of "highly faithful audio"!Don't jump, grab the ground w
The basic composition of the listening system and the selection of amplifiers and speakersFirst, let’s talk about the composition of a complete system. Simply put, it can basically consist of the following three parts:Audio source, amplifier, speakers.Sound source:Regardless of digital or analog sig
How powerful should the audio amplifier be?In a sound system, using a power amplifier properly is not as simple as you think. It is really necessary to discuss it.1. What power amplifier should be used? Generally, before choosing a power amplifier, the first problem you e
1. SURROUND decoding virtual surround sound technology and chipQsurround is currently a relatively new set of sound processing systems that can perform sound field processing on ordinary discs (stereo) and simulate Dolby surround sound effects, which is suitable for all sound sources.2. Dolby AC-3 s
Davecl Industrial CO., LIMITED
robinwang111
+86 19867722735 (wechat)
+86 18665912888 (whatApp/Wechat)
Room 504, President Commercial Centre, 608 Nathan Road, Mongkok, Kowloon, HK
No.9, Street 4, Xiangmang Xilu South,Qingxi Town, Dongguan, GD, China