Denon AVR-1604 Operating Instructions Manual

Also see for DHT-684DVD: Specification sheet Operating instructions

60ENGLISHDTS-ES Extended Surround TMDTS-ES Extended Surround is a new multi-channel digital signal format developed by Digital Theater Systems Inc. While offering high compatibilitywith the conventional DTS Digital Surround format, DTS-ES Extended Surround greatly improves the 360-degree surround impression and spaceexpression thanks to further expanded surround signals. This format has been used professionally in movie theaters since 1999.In addition to the 5.1 surround channels (FL, FR, C, SL, SR and LFE), DTS-ES Extended Surround also offers the SB (Surround Back, sometimesalso referred to as “surround center”) channel for surround playback with a total of 6.1 channels. DTS-ES Extended Surround includes two signalformats with different surround signal recording methods, as described below.2 DTS-ES TM Discrete 6.1DTS-ES Discrete 6.1 is the newest recording format. With it, all 6.1 channels (including the SB channel) are recorded independently using adigital discrete system. The main feature of this format is that because the SL, SR and SB channels are fully independent, the sound can bedesigned with total freedom and it is possible to achieve a sense that the acoustic images are moving about freely among the backgroundsounds surrounding the listener from 360 degrees.Though maximum performance is achieved when sound tracks recorded with this system are played using a DTS-ES decoder, when playedwith a conventional DTS decoder the SB channel signals are automatically down-mixed to the SL and SR channels, so none of the signalcomponents are lost.2 DTS-ES TM Matrix 6.1With this format, the additional SB channel signals undergo matrix encoding and are input to the SL and SR channels beforehand. Uponplayback they are decoded to the SL, SR and SB channels. The performance of the encoder used at the time of recording can be fully matchedusing a high precision digital matrix decoder developed by DTS, thereby achieving surround sound more faithful to the producer’s sound designaims than with conventional 5.1- or 6.1-channel systems.In addition, the bit stream format is 100% compatible with conventional DTS signals, so the effect of the Matrix 6.1 format can be achievedeven with 5.1-channel signal sources. Of course it is also possible to play DTS-ES Matrix 6.1 encoded sources with a DTS 5.1-channel decoder.When DTS-ES Discrete 6.1 or Matrix 6.1 encoded sources are decoded with a DTS-ES decoder, the format is automatically detected upondecoding and the optimum playing mode is selected. However, some Matrix 6.1 sources may be detected as having a 5.1-channel format, so theDTS-ES Matrix 6.1 mode must be set manually to play these sources.(For instructions on selecting the surround mode, see page 51.)The DTS-ES decoder includes another function, the DTS Neo:6 surround mode for 6.1-channel playback of digital PCM and analog signal sources.2 DTS Neo:6 TM surroundThis mode applies conventional 2-channel signals to the high precision digital matrix decoder used for DTS-ES Matrix 6.1 to achieve 6.1-channel surround playback. High precision input signal detection and matrix processing enable full band reproduction (frequency response of20 Hz to 20 kHz or greater) for all 6.1 channels, and separation between the different channels is improved to the same level as that of a digitaldiscrete system.DTS Neo:6 surround includes two modes for selecting the optimum decoding for the signal source.• DTS Neo:6 CinemaThis mode is optimum for playing movies. Decoding is performed with emphasis on separation performance to achieve the sameatmosphere with 2-channel sources as with 6.1-channel sources.This mode is effective for playing sources recorded in conventional surround formats as well, because the in-phase component is assignedmainly to the center channel (C) and the reversed phase component to the surround (SL, SR and SB channels).• DTS Neo:6 MusicThis mode is suited mainly for playing music. The front channel (FL and FR) signals bypass the decoder and are played directly so there isno loss of sound quality, and the effect of the surround signals output from the center (C) and surround (SL, SR and SB) channels add anatural sense of expansion to the sound field.