Epson AVR-687 57

Additional Information

Surround

The AVR-687 is equipped with a digital signal processing circuit that lets you play program sources in the surround mode to achieve the same sense of presence as in a movie theater.

Dolby Surround

[1] Dolby Digital

Dolby Digital is the multi-channel digital signal format developed by Dolby Laboratories.

A total of 5.1-channels are played: three front channels (“FL”, “FR” and “C”), two surround channels (“SL” and “SR”) and the “LFE” channel for low frequencies.

Because of this, there is no crosstalk between channels and a realistic sound field with a “three-dimensional” feeling (sense of distance, movement and positioning) is achieved.

A real, overpowering sense of presence is achieved when playing movie sources in AV rooms as well.

DTS Digital Surround

DTS Digital Surround is a digital surround format developed by Digital Theater Systems of the United States.

The number of playback channels and the playing band is the same as for Dolby Digital (5.1-channels).

The compression rate of the audio data when it was recorded on the medium is lower than for Dolby Digital, so there is more information when the data is decoded, resulting in richer, clearer sound quality.

MANUFACTURED UNDER LICENSE FROM DIGITAL THEATER SYSTEMS, INC.

U.S. PAT. NO’S. 5,451,942; 5,956,674; 5,974,380; 5,978,762; 6,226,616; 6,487,535 AND OTHER U.S. AND WORLD–WIDE PATENTS ISSUED AND PENDING.

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Additional Information

DTS NEO:6 surround

This is a matrix decoding technology for 6.1-channel surround playback of 2-channel sources.

The optimum decoding for the type of signal source to be played can be selected. There are two modes.

DTS NEO:6 CINEMA:

This mode is suited for playing movies. It achieves the same type of sound as in a movie theater, even with 2 channels.

DTS NEO:6 MUSIC:

This mode is suited for playing music. A natural sense of expansion is added to the sound field.

Neural Surround

Neural Surround™, a breakthrough in audio technology, will bring the excitement of surround music to more of America’s listening audience. It provides the rich envelopment and discrete image detail

[2] Dolby Pro Logic II

Dolby Pro Logic II is a matrix decoding technology developed by Dolby Laboratories. Regular music such as that on CDs is encoded into 5 channels to achieve an excellent surround effect.

The surround channel signals are converted into stereo and full band signals (with a frequency response of 20 Hz to 20 kHz or greater) to create a “three-dimensional” sound image offering a rich sense of presence for all stereo sources.

[3] Dolby Pro Logic IIx

Dolby Pro Logic IIx is a further improved version of the Dolby Pro Logic II matrix decoding technology.

Audio signals recorded in 2 channels are decoded to achieve a natural sound with up to 7.1-channels.

There are three modes: “Music” suited for playing music, “Cinema” suited for playing movies, and “Game” which is optimum for playing games.

DTS-ES™

DTS-ES is a new surround format developed by Digital Theater Systems.

A sound image and sense of positioning can be achieved by adding a surround back (“SB”) channel to the conventional 5.1-channels.

DTS-ES™ Discrete 6.1:

This is the latest format, in which all 6.1-channels, including the “SB” channel, are recorded independently. Since the different channels are independent, the sound can be designed with total freedom.

DTS-ES™ Matrix 6.1:

With this format, the “SB” channel is matrix-encoded and inserted into the “SL” and “SR” channels, then decoded for the “SL”, “SR” and “SB” channels upon playback. This achieves a surround sound more faithful to the artist’s sound design intentions than with conventional 5.1- or 6.1-channel systems.

of surround sound in a format 100 % compatible with stereo. With superior spectral resolution and channel separation, Neural Surround™ draws the brain’s attention to sonic details in musical instruments, vocals, and ambience that are typically masked by other playback systems. This allows the listener to fully experience the richness and subtleties in recorded performance as never before. As the chosen format for XM Satellite Radio’s new XM HD surround programming, Neural Surround will help deliver more surround music to more listeners than any other broadcast format. XM Satellite Radio will be the first radio company -to broadcast surround sound on the radio 24 hours a day and will offer three channels fully dedicated to Neural Surround™ music. This alone will amount to more than 25,000 hours of Neural Surround™ music each year.

• This product is manufactured under license from Neural Audio

Corporation.

D&M Holdings Inc. hereby grants the user a non-exclusive, non-

transferable, limited license right exercisable to use the NA

¢Sources recorded in Dolby Surround

Sources recorded in Dolby Surround are indicated with the following logo marks.

Dolby Surround support mark:

Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories.

DTS 96/24

DTS 96/24 is a multi-channel digital signal format developed by Digital Theater Systems.

The sampling frequency is raised to achieve 5.1-channel playback with high quality sound (sampling frequency: 96 kHz, quantization: 24 bits).

SURROUND Technology and other US and World Wide Patents

Pending technology.

“Neural” and “Neural Audio” and “Neural Surround” Are

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