Friends who know the car audio system come in and talk about it!

2. 1 channel

Strictly speaking, 2. 1 channel is not a home theater, but 2 channels can already constitute the simplest sound. In the process of recording, the sound is distributed to two independent channels, thus achieving good sound localization effect. This technology is particularly useful in music appreciation, and the audience can clearly distinguish which direction various musical instruments come from, thus making the music more imaginative and closer to the live experience. . 1 refers to the woofer, also called the subwoofer, which is used to play the separated low-frequency sound and the LFE channel in Dolby surround.

4. 1 channel

Two-channel stereo can well represent the sound field in front of the listener, but it can't represent the sound field on the side and behind, so people add two speakers, one left and one right, behind the listener to form four channels, which constitutes the basic surround sound field. . 1 refers to the woofer, also called the subwoofer, which is used to play the separated low-frequency sound and the LFE channel in Dolby surround. 4. 1 channel has been able to express the sound field very well, and the listener can feel the feeling of three-dimensional space. Four-channel surround defines four pronunciation points: left front, right front, left back and right back, and the listener is surrounded in the middle. Four-channel system can bring sound from many different directions to the audience, and can get the auditory feeling immersed in various different environments, giving users a brand-new experience.

5. 1 channel

5. 1 channel originates from 4. 1 channel, and a center channel is added on the basis of 4. 1 channel, which is placed in front of the listener to enhance the effect of character dialogue. Among them, ".1" still refers to the woofer, also known as the subwoofer, which is used to play the separated low-frequency sound and the LFE channel in dolby surround. 5. 1 channel is a very good balance between cost and effect, which can build a surround sound field and highlight the dialogue of the characters in the film. 5. 1 channel is the most common sound form in home theaters and has been widely used in various home theaters. Some well-known recording formats, such as Dolby AC-3(Dolby Digital) and DTS, are all 5. 1 channel systems. The following 6. 1 channel and 7. 1 channel are all based on 5. 1 channel. Many sound media are recorded with 5. 1 channel when recording, and of course, they should also use 5. 1 channel when playing.

6. 1 and 7. 1 channel

6. 1 channel and 7. 1 channel are very close. Are based on 5. 1 channel. Put the left and right rear channels of the 5. 1 channel on both sides of the listener, and add 1 or two rear surround behind the listener. Among them, ".1" still refers to the woofer, also known as the subwoofer, which is used to play the separated low-frequency sound and the LFE channel in dolby surround. Compared with 5. 1 channel, 6. 1 channel and 7. 1 channel can get a more realistic flying effect overhead or nearby, and have a more stable sound image to set off the movie atmosphere and music, so that both cinemas and families can enjoy a more harmonious surround effect. Now more and more movies are recorded with 6. 1 or 7. 1 channel, so more and more home theaters will use 6. 1 and 7. 1 channel in the future.

Generally speaking, the number of speakers in a home theater generally refers to how many channels a home theater suite can support at most. For example, if there are 6 speakers including the woofer, then 5. 1 channel will be supported. Of course, in a few cases, there can be no woofer in the home theater, or the woofer and the front speaker can be made together, and there are also cases where one channel is played by multiple speakers. In addition, it is compatible with different channels. Of course, 6. 1 channel can play 2-channel stereo programs, and 2. 1 channel can also play 6. 1 channel programs. Although the multi-channel surround effect cannot be achieved, there will be no situation that it cannot be played.

The second question:

The power of the host is limited, the distortion rate is high when the sound is loud, and the output power of the power amplifier is large and stable, which can greatly improve the sound quality.

"Road" actually refers to the sound channel, but it is different from 1 with speakers, because after the power amplifier, a frequency divider can be connected, which divides a sound channel into high frequency (treble) and medium and low frequency (bass speaker).

The third question:

"y20369" on the third floor has already answered.

The fourth question:

I haven't heard of the effect of BMW, I don't know. However, to enhance the effect, we must first look at whether the sound field layout is reasonable, especially the placement of the tenor. If the tenor is placed in the A-pillar inverted mode, the sound field positioning will be much better; Then it is better to add a four-way power amplifier and subwoofer to push the frontcourt in two directions and the subwoofer in two-way bridge (the role of subwoofer is not to blow up the machine, but to improve the sound field, "bass is the sound frame" and the main engine pushes the backcourt). This combination will definitely be much better than if you use the host to push the front and back fields at the same time.

In addition, the answer to the first question was found online.

If you think the answer is ok, please give me the best one.