What is Dolby Digital Surround Sound AC-3?
Dolby Digital (AC-3) is a fully digital audio coding mode developed by American Dolby laboratory. It provides 5 completely separate channels of the full frequency domain between 3Hz~20kHz, including the main left and right channels, mid-positioned track and post-positioned left and right surround channels. The biggest difference with the Dolby Pro-Logic is that the post-positioned left and right surround channels are stereo track, and each track has a full frequency domain. Moreover, in order to strengthen the sound effects of subwoofer, a low frequency effect channel is set (commonly named 0.1 track). This type of amplifier belongs to medium surround power amplifier. What is DTS (Digital Theater System) surround system? DTS is a digital theater system jointly developed by American DTS Co. and Universal Picture Co Similar to Dolby Digital; it is also a multi-channel applying compress coding technology. The compressing mode of CAC (Coherent Acoustics Coding) framework that DTS applies v
