Dolby directional logic surround with AC

Dolby directional logic system is a simulation system. It is the track and around the track was separated two wins, due to congenital defect of simulation technology, separating degree very low signal-to-noise ratio is not high, at the same time as the technical index is around the track with very low, while a narrow lack immersive feel.

While AC - 3 is a digital audio coding (AudioCoding), it up simulation technology, using a new digital technology, but also lies in:

1 true stereo surround sound logic system, dolby directional surround sound, which is surrounded by mono channels are surrounded by behind only without audio-visual positioning capability. And the system of AC - 3 douby after the left and right surround channels is true stereo channel, and channel can have very clear the sound point positioning. For example, a voice thunder nature will have plenty of moving around and audio-visual, but in dolby directional logic system played only discern simply had leapt back in the past, voice of natural coherent move feeling, and AC - 3 system can realistically reductive around a round top gallop away into the sky and audio mobile feeling. The sound effects and similar plane circled bomb exploded splashing scattered all around the renegade etc.

2 the directional logic system around douby channel bandwidth is very narrow, the 7kHz 100Hz -, 20Hz is limited 16kHz - channels. And 3-5 dolby AC track FRF all 20Hz - 20kHz (+ 0.5 dB), low sound track for 20Hz - 120Hz (+ 0.5 dB), i.e. AC - 3 system covers all audio can smell, it is a real range reduction of the basic information of the voice. And in this respect is a logical system oriented dolby disabled system.

3. Excellent track space, because the system adopts the directional dolby logic is simulated separation technology, the signal from the track around the track, so all the solutions of the track separated degrees do not high, this makes sense, audio-visual mobile incoherent. AC milan - 3 record and in each channel is completely isolate when the independent, not involved. While using the five independent full frequency channel, namely, in front of the left, right and left, and right rear around and around the sixth can choose low sound channel. Make the acoustic positioning and audio-visual reproducibility is very good.

Digital technology of the AC - 3 system, for example, has many advantages of dynamic and high signal-to-noise ratio, versatility, etc. No doubt, compared with AC - 3 system, a logical system is already directional dolby flower yesterday.

We repeat the bothersome would introduce many newspapers and magazines, but some things should be emphasized when you want to establish a set of family cinema, must from past dolby directional logic system concept and circles in accordance with AC - 3, the model to match DTS equipment.