Yamaha YSP-2500 Owners Manual - Page 76
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APPENDIX Basic Knowledge of Surround Sound What is Surround Sound? Surround sound offers the sense of being surrounded by sounds, an experience common in concert halls and movie theaters. This can be achieved by surrounding the audience with numerous speakers from which sound is output uniformly in all directions. This "surround sound" technology immerses the listener in sound with speakers positioned not only in front of the listener, but also behind and to the sides of the listener, making him or her feel as if they are actually in the situation. For precise directional control and quality of sound reproduction, sounds must be split into separate audio channels for output to each speaker. Surround sound systems for regular home use (7.1-channel speaker systems) produce surround sound using seven speakers and a subwoofer, as shown below: Typical 7.1 channel speaker system Front speakers Subwoofer Center speaker Surround back speakers Surround speakers As explained above, sounds can be reproduced for a great sense of presence by installing multiple speakers. However, this can be difficult to do in a living room. This unit utilizes "digital sound projector" technology to provide a realistic and engaging surround sound experience using only a slim center unit and subwoofer. What is a Digital Sound Projector? A digital sound projector separately controls compact speakers installed in orderly rows, so that optimized audio signals are output from each speaker and synthesized as highly focused sounds (sound beams). Digital amplifier Speaker Sound beams are emitted in the target direction When these focused sounds hit a hard wall, they are reflected off of the wall. A digital sound projector outputs sound beams from five channels, including front (left/right), center, and surround (left/right) channels, by reflecting these beams off of walls so that sounds reach the listener from the appropriate direction. It features a technology that enables true surround sound without requiring the installation of speakers in front of, or behind, the listener. By combining front and surround channel signals, it can also create two new channels, for a total of seven, so that all channels work together more closely for a better surround sound experience. The sound image of the system Yamaha's Audio Technologies This unit features many more functions based on Yamaha's superior audio technologies. Compressed Music Enhancer This technology enhances and extends bass and treble, which tend to be weak in digitally compressed formats such as MP3 used with portable digital audio players and computers. This makes compressed audio sound more musically dynamic. CINEMA DSP This technology enables precise digital recreation of actual acoustic environments found in well-known concert halls and movie theaters. This is achieved using Yamaha's exclusive sound field programs, which are based on data measured in various sound fields, and with which the amplitude, depth, and volume of sounds have been adjusted. Virtual Surround Headphones These headphones are used to virtually reproduce sound fields. They provide a more natural and full surround sound experience. APPENDIX ➤ Basic Knowledge of Surround Sound En 76