Speaker multi-channel surround sound Introduction

Multichannel surround sound Dolby Audio Code3 (AC-3, but more popular as Dolby Digital) is an audio coding format developed for HDTV (high-definition TV) applications, which will track 5 full band (3hz-20000hz) and a low frequency segment ( 3hz-120hz) is encoded as a data stream by lossy compression.

Dolby Audio Code3 (AC-3, but more popular, Dolby Digital) is an audio coding format developed for HDTV (high-definition TV) applications that will have 5 full band (3hz-20000hz) audio tracks and a low frequency segment ( 3hz-120hz) is encoded as a data stream by lossy compression. The compression algorithm is used to delete some sound details that are not easily heard by the human ear, so that the compression ratio of 10:1 can be achieved. The Dolbydigital standard is widely used in the film industry and is visible in most DVDs, and almost all DVD players now support this standard.

The double meaning of stereo

Generally speaking, "stereo" refers to two channels (left and right) of the audio system, but in fact, when the word first became popular, refers to the ability to reproduce the 3D sound multi-channel system (generally should be in 4 channels above, usually should also include a common bass channel). In fact, the earliest sound system of the so-called stereo movie is the multichannel system or surround sound system.

The sound system of early stereo movies uses a matrix to encode the four-channel sound data into two tracks, and then restore it to four channels when playing. When the 3D audio gradually became popular in the family, for the sake of cost and simplicity, the matrix mode was no longer adopted, but it evolved into a real two-channel system, when the stereo was used to represent the two-channel system.

Multi-channel surround sound playback

If you want to achieve surround sound playback on your PC, your computer needs to have the following conditions (usually a newly purchased PC will satisfy most of them):

1, a DVD optical drive;

2. A common sound card with surround sound output (preferably with s/pdif output to connect the external decoder) or a special multi-channel sound card with 6 channels output;

3, a group of active 5.1 speakers or a 6-channel power amplifier plus a set of passive speakers; Transferred from www.58116.cn

4, can support Dolbydigital and DTS decoding DVD player software or the use of external dolbydigital, DTS decoder;

5, a group of speaker cable, if the use of external power amplifier or decoder, also need to be equipped with the corresponding audio cable.

Six basic designs

When designing surround sound, a sound designer can produce various forms of expression based on the plot and the material to be mixed. Surround sound design can be divided into the following basic design items, the following is a surround sound design of the six basic aspects and specific performance methods, used in various occasions to reflect its effects.