Harman-Kardon AVR45 owner manual Surround Mode Chart

Operation

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Selection of a surround mode is based on personal taste, as well as the type of pro- gram source material being used. For example, motion pictures or TV programs bearing the logo of one of the major sur- round encoding processes, such as Dolby Surround, DTS† Stereo or UltraStereo†† may be played in either the Dolby Digital, Dolby Pro Logic or Movie Surround depending on the source material.

NOTE: Once a program has been encoded with surround information, it retains the surround matrix as long as the program is broadcast in stereo. Thus, movies with surround sound will carry surround information when they are broadcast via conventional TV stations, cable, pay TV and satellite transmission. In addition, a growing number of made- for-television programs, sports broad- casts, radio dramas and music CDs are also recorded in surround sound. You

may obtain a list of these programs and discs from the Dolby Laboratories web site at www.dolby.com

When a program is not listed as carrying intentional surround information, you may find that Pro Logic or Dolby 3-Stereo modes often deliver enveloping surround presentations through the use of the natural information present in all stereo recordings. However, for stereo, but non- surround programs, we suggest that you try the Hall 1, Hall 2 or Theater modes.

Surround Mode Chart

MODE	FEATURES	DELAY TIME RANGE
DOLBY DIGITAL	This mode is available only when the source material is encoded with Dolby Digital	Center: 0 ms – 5 ms
	(AC-3) data. It provides up to five separate main audio channels and a special dedi-	Surround: 0 ms – 15 ms
	cated Low-Frequency Effects channel.
DOLBY PRO LOGIC	Dolby Pro Logic is the standard mode for analog surround sound decoding. It uses	15 ms – 30 ms
	information encoded in a two-channel stereo recording to produce four distinct	Initial Setting = 20 ms
	channels: Left, Center, Right and Surround. Use this mode for accurate reproduction
	of programs bearing the Dolby Surround, DTS Stereo, UltraStereo or other
	“Surround” logos. Surround encoded programs include videocassette, DVD and LD
	movies, TV and cable programs, radio programs and audio CDs. Dolby Pro Logic
	processing may also be used to provide a pleasing surround effect with some
	stereophonic source material that does not carry surround encoding.
DOLBY 3 STEREO	Dolby 3 Stereo uses the information contained in a surround encoded or two-channel	No Surround Channels
	stereo program to create center channel information. In addition, the information
	that is normally sent to the rear channel surround speakers is carefully mixed in with
	the front left and right channels for increased realism. Use this mode when you have a
	center channel speaker, but no surround speakers.
THEATER	Theater Surround processing uses matrix surround decoding to simulate a standard	27.3 ms
	movie or stage theater.
HALL 1 and HALL 2	These modes are designed for use with stereo recordings. They provide a sound-field	Hall 1 – 41.6 ms
	effect that simulates the complex combination of direct and reflected sounds that	Hall 2 – 67.4 ms
	create the rich reverberant atmosphere of a medium-sized concert hall (Hall 1) or a
	larger concert hall (Hall 2).
STEREO	This mode turns off all surround processing and presents the pure left and right	No Surround Channels
	channel presentation of two channel stereo programs.