Yamaha R-V905 Owner's Manual

Also see for R-V905: Service manual Service manual

7EnglishFEATURES ON SOUND EFFECTThis unit incorporates a sophisticated, multi-program digitalsound field processor. The processor allows you to electroni-cally expand and change the shape of the audio sound fieldfrom both audio and video sources, creating a theater-likeexperience in your listening room. This unit has a total of 8digital sound field processor (DSP) modes. You can create anexcellent audio sound field by selecting a suitable sound field(this will, of course, depend on what you will be listening to),and adding desired adjustments.In addition, this unit incorporates a Dolby Pro Logic Surrounddecoder and Dolby Digital decoder for multi-channel soundreproduction of Dolby Surround encoded video sources. Theoperation of the Dolby Pro Logic Surround or Dolby Digitaldecoder can be controlled by selecting a corresponding DSPprogram including combined operations of the YAMAHA DSPand the Dolby Pro Logic Surround or Dolby Digital decoder.Digital Sound Field ProcessingWhat is it that makes live music so good? Today’s advancedsound reproduction technology lets you get extremely close tothe sound of a live performance, but chances are you’ll stillnotice something missing, the acoustic environment of the liveconcert hall. Extensive research into the exact nature of thesonic reflections that create the ambience of a large hall hasmade it possible for YAMAHA engineers to bring you this samesound in your listening room, so you’ll feel all the sound of alive concert.Furthermore, our technicians, armed with sophisticatedmeasuring equipment, have even made it possible to capturethe acoustics of a variety of actual concert halls, theaters, etc.from around the world, to allow you to accurately re-create anyone of these live performance environments, all in your home.Dolby Pro Logic SurroundThis unit employs a Dolby Pro Logic Surround decoder similarto professional Dolby Stereo decoders used in many movietheaters. By using the Dolby Pro Logic Surround decoder, youcan experience the dramatic realism and impact of DolbySurround movie theater sound in your own home. Dolby ProLogic employs a four channel five speaker system. The ProLogic Surround system divides the input signal into four levels:the left and right main channels, the center channel (used fordialog), and the rear surround sound channels (used for soundeffects, background noise, and other ambient noises). Thecenter channel allows listeners seated in even less-than-idealpositions to hear the dialog originating from the action on thescreen while experiencing good stereo imaging.Dolby Surround is encoded on the sound track of pre-recordedvideo tapes, laser discs, and some TV/cable broadcasts. Whenyou play a source encoded with Dolby Surround on this unit,the Dolby Pro Logic Surround decoder decodes the signal anddistributes the surround-sound effects.This Dolby Pro Logic Surround decoder employs a digital signalprocessing system. This system improves the stability of soundat each channel and crosstalk between channels, so thatpositioning of sounds around the room is more accuratecompared with conventional analog signal processing systems.In addition, this unit features a built-in automatic input balancecontrol. This always assures you the best performance withoutmanual adjustment.Dolby DigitalThe built-in Dolby Digital decoder leads you into a totally newsound experiences.Dolby Digital is a new generation of multi-channel digital audiotechnology, or the newest spatial sound processing formatdeveloped for 35 mm film-movies by employing a new kind oflow bit-rate audio coding.Dolby Digital is a digital surround sound system that providescompletely independent multi-channel audio to consumers. Inmulti-channel form, Dolby Digital provides five full rangechannels in what is sometimes referred to as a “3/2” configura-tion: three front channels (left, center and right), plus twosurround channels. A sixth bass-only effect channel is alsoprovided for output of LFE (low frequency effect), or low basseffects that are independent of other channels. This channel iscounted as 0.1, thus giving rise to the term 5.1 channels intotal.Compared to Dolby Pro Logic that is referred to a “3/1” system(left front, center, right front and just one surround channel),Dolby Digital features two surround channels, called stereo orsplit surrounds, each offering the same full range fidelity as thethree front channels.Sound of wide dynamic range reproduced by the five full rangechannels presents listeners much excitement that has neverbeen experienced before. Precise sound orientation by thediscrete digital sound processing expands realism that theoriginal movie possesses.LD and DVD are home audio formats that could benefit fromDolby Digital. In the near future, Dolby Digital will also beapplied to DBS, CATV and HDTV. The ongoing release ofDolby Stereo Digital theatrical films now underway will providean immediate source of Dolby Digital encoded video software.