Additional Information

Dolby Digital (AC-3)

This is a new digital surround system proposed to reproduce Dolby SR-D (the 3 dimensional sound system developed for use in movie theaters) in the home. This technology allows you to enjoy the full 5.1 ch soundtrack intended by the filmmaker, in the comfort of your own home.

Dolby Pro Logic Surround

Decoding system of Dolby Surround sound standardized in TV programs and movies. Compared with the former Dolby Surround system, Dolby Pro Logic Surround improves sound image by using four separate channels: off-screen audio effects, on-screen dialog, left-to-right panning, and music. These channels manipulate the sound to be heard and enhance the action as it happens on the screen. To take advantage of Dolby Pro Logic, you should have at least one pair of rear speakers and/or one center speaker. You also need to select the appropriate center mode to enjoy a full effect.

Sound field

Sound pattern produced by a sounding source or sources in a given environment due to direct and reflected sounds and the acoustics of the environment.

Surround sound

Sound that consists of three elements: direct sound, early reflected sound (early reflections) and reverberative sound (reverberation). The acoustics where you hear the sound affect the way these three sound elements are heard. These sound elements are combined in such a way that you can actually feel the size and the type of a concert hall.

• Types of sound

Reverberation

Early reflections

Effect level

Combination of the level of early reflections and reverberation. You can adjust the effect level in 6 levels. As you select higher levels, the room becomes “live,” and as you select lower levels, the room becomes “dead.”

5.1 INPUT jacks

These jacks are used to input decoded Dolby Digital AC-3 audio signals, allowing you to enjoy 5.1 channel surround sound (STR-DE715/DE615/D660Z/D560Z only). Use these jacks to connect a Dolby Digital AC-3 decoder or a DVD player with a built-in AC-3 decoder.

Parameter

Variable of sound that composes sound image, such as tone or delay time. You can customize the pre-programmed sound fields by adjusting parameters to suit your listening situation.

Direct sound

• Transition of sound from rear speakers

Direct sound

Level Early

reflections Reverberation

Time Early reflection time

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