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manual abstract
The signals within each channel are distinct from the others, allowing pinpoint sound imaging, and Dolby Digital offers tremendous dynamic range from the most powerful sound effects to the quietest, softest sounds, free from noise and distortion. 2 Dolby Digital and Dolby Pro Logic No. of recorded channels (elements) No. of playback channels Playback channels (max.) Audio processing High frequency playback limit of surround channel 5.1 ch 5.1 ch L, R, C, SL, SR, SW Digital discrete processing Dolby Digital encoding / decoding 20 kHz 2 ch 4 ch L, R, C, S (SW – recommended) Analog matrix processing Dolby Surround 7 kHz 1: Please use a commercially available adapter when connecting the Dolby Digital RF output terminal of the LD player to the digital input terminal. Please refer to the instruction manual of the adapter when making connection. 2: Some DVD digital outputs have the function of switching the Dolby Digital signal output method between “ bit stream” and “ (convert to) PCM” . When playing in Dolby Digital surround on the AVR-486, switch the DVD player’s output mode to “ bit stream” . In some cases players are equipped with both “ bit stream + PCM” and “ PCM only” digital outputs. In this case connect the “ bit stream + PCM” terminals to the AVR-486. w Dolby Pro Logic II • Dolby Pro Logic II is a new multi-channel playback format developed by Dolby Laboratories using feedback logic technology and offering improvements over conventional Pro Logic circuits. • Dolby Pro Logic II can be used to decode not only sources recorded in Dolby Surround ( ) but also regular stereo sources into five channels (front left, front right, surround left and surround right) to achieve surround Subwoofer Surround speakers Front speakers 60° Monitor Center speaker [ As seen from above ] Front speaker 2 to 3 feet [ As seen from the side ] Surround speaker 120° LD (VDP) DVD Others (satellite broadcasts, CATV, etc.) Coaxial Dolby Digital RF output terminal 1 Optical or coaxial digital output (same as for PCM) 2 Optical or coaxial digital output (same as for PCM) Set the input mode to “ AUTO” ( page 19, 20). Set the input mode to “ AUTO” ( page 19, 20). Set the input mode to “ AUTO” ( page 19, 20). Surround 40 ENGLISH ENGLISH Additional Information Additional Information • Whereas with conventional Dolby Pro Logic the surround channel playback frequency band was limited, Dolby Pro Logic II offers a wider band range (20 Hz to 20 kHz or greater). In addition, the surround channels were monaural (the surround left and right channels were the same) with previous Dolby Pro Logic, but with Dolby Pro Logic II they are played as stereo signals. • Various parameters can be set according to the type of source and the contents, so it is possible to achieve optimum decoding ( page 43). e Dolby Pro Logic IIx Dolby Pro Logic IIx furthers the matrix decoding technology of Dolby Pro Logic II to decode audio signals recorded on two channels into up to 7.1 playback channels, including the surround back channel. Dolby Pro Logic IIx also allows 5.1-channel sources to be played in up to 7.1 channels. The mode can be selected according to the source. The Music mode is best suited for playing music, the Cinema mode for playing movies, and the Game mode for playing games. The [2] DTS Digital Surround Digital Theater Surround (also called simply DTS) is a multichannel digital signal format developed by Digital Theater Systems. DTS offers the same “ 5.1” playback channels as Dolby Digital (front left, front right, center, surround left and surround right) as well as the stereo 2-channel mode. The signals for the different channels are fully independent, eliminating the risk of deterioration of sound quality due to interference between signals, crosstalk, etc. DTS features a relatively higher bit rate as compared to Dolby Digital (1234 kbps for CDs and LDs, 1536 kbps for DVDs) so it operates with a relatively low compression rate. Because of this the amount of data is great, and when DTS playback is used in movie theaters, a separate CD-ROM synchronized with the film is played. With LDs and DVDs, there is of course no need for an extra disc; the pictures and sound can be recorded simultaneously on the same disc, so the discs can be handled in the same way as discs with other formats. There are also music CDs recorded in DTS. These CDs include 5.1-channel surround signals (compared to two channels on current CDs). They do not include picture data, but they offer surround playback on CD players that are equipped with digital outputs (PCM type digital output required). DTS surround track playback offers the same intricate, grand sound as in a movie theater, right in your own listening room. 2 DTS compatible media and playback methods Symbols indicating DTS compatibility: and The following are general examples. Also refer to the player’s operating instructions. Manufactured under license from “ Dolby” , “ Pro Logic” and the double-D symbol are trademarks of D...