Harman-Kardon AVR80 owner manual Surround Mode Chart, Advanced Features

AVR80 manual 11/01/98 13:01 Side 31

Advanced Features

31

Surround Mode Chart

MODE	FEATURES	DELAY TIME RANGE
DOLBY PRO LOGIC	Dolby Pro Logic is the standard mode for surround sound decoding. It uses information	15 ms – 30 ms
	encoded in a two channel stereo recording to produce four distinct channels:	Initial Setting = 20 ms
	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 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 source material that
	does not carry surround encoding.
THX CINEMA	THX Cinema is a patented process developed by Lucasfilm Ltd. as an enhancement	15 ms – 30 ms
	to surround processing. It includes additional enhancements that greatly improve	Initial Setting = 20 ms
	the spectral and spatial realism of motion pictures that are recorded with the same
	usual surround encoding as for DOLBY PRO LOGIC. THX Cinema’s exclusive
	processing is designed to overcome the differences in acoustics between movie
	theaters and home listening rooms so that movie sound tracks will sound the same
	way at home as they did in the mixing room where they were created.
DOLBY 3 STEREO	Dolby 3 Stereo uses the information contained in a surround encoded or stereophonic	No Surround Channels
	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.
MOVIE SURROUND	Movie Surround uses decoding similar to Pro Logic, but it permits delay	10 ms – 90 ms
	times up to 90 ms. Use this mode instead of Pro Logic or THX to experiment with	Initial Setting = 20 ms
	surround times above 30 ms, or if the delay time formula suggests a
	larger time delay for your room.
HALL SURROUND	This mode is designed for use with stereo recordings. It provides a sound field effect that	10 ms – 90 ms
	simulates the complex combination of direct and reflected sounds that create	Initial Setting = 20 ms
	the rich reverberant atmosphere of a medium sized circular concert hall.
MATRIX SURROUND This mode is designed for use with sports broadcasts, live concerts or other programs		10 ms – 90 ms
	where the feeling of a wide surround effect is desired.	Initial Setting = 20 ms
MONO	This mode is intended for use with old music or movies, televisions shows and other	No Surround Channels
	programs that have only monaural sound track. All sound will be reproduced through
	the center channel speaker, if installed. If there is no center channel speaker,
	monaural sound is reproduced from the front left and right speakers.
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.

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