JVC TH-A32 manual Creating Realistic Sound Fields, Dolby Surround Dolby Pro Logic, Dolby Digital

DOLBY SURROUND

Creating Realistic Sound Fields

You can use the following surround to reproduce a realistic sound field.

•Dolby Surround

• Dolby Pro Logic II

•Dolby Digital

•DTS Digital Surround

•DSP modes

7Dolby Surround

Dolby Pro Logic II*

Dolby Pro Logic II has newly developed multichannel playback format to decode the 2 channel sources—stereo analog source, Linear PCM digital source, and Dolby Surround encoded source— into 5.1 channel.

Matrix-based encoding/decoding method for Dolby Pro Logic II makes no limitation for the cutoff frequency of the rear treble and enables stereo rear sound compared to conventional Dolby Pro Logic.

Dolby Pro Logic II enables to reproduce spacious sound from original sound without adding any new sounds and tonal colorations. Dolby Pro Logic II has two modes—Movie mode and Music mode: Pro Logic II Movie (PL II MOVIE)—suitable for reproduction of

Dolby Surround encoded sources bearing the mark . You can enjoy sound field very close to the one created with discrete 5.1 channel sounds.

Pro Logic II Music (PL II MUSIC)—suitable for reproduction of any 2 channel stereo music sources. You can enjoy wide and deep sound by using this mode.

•When Dolby Pro Logic II is activated, the PRO LOGIC II indicator lights up on the display window.

7Dolby Digital*

Used to reproduce multichannel soundtracks of the software

encoded with Dolby Digital ().

Dolby Digital 5.1 ch (DOLBY D) encoding method (so-called discrete multichannel digital audio format) records and digitally compresses the left front channel, right front channel, center channel, left rear channel, right rear channel, and LFE channel signals.

Since each channel is completely independent from the other channel signals to avoid interference, you can obtain much better sound quality with much stereo and surround effects.

When the system detects Dolby Digital signals, the DIGITAL indicator lights up on the display.

Note:

Dolby Digital software can be roughly grouped into two categories— multichannel (up to “5.1” channel) and 2 channel software. To enjoy surround sounds while playing Dolby Digital 2 ch software, you can use Dolby Pro Logic II.

■DTS Digital Surround**

Used to reproduce multichannel sound tracks of the software

encoded with DTS Digital Surround ( ).

DTS Digital Surround is another discrete 5.1 channel digital audio format available on CD, LD, and DVD software.

Compared to Dolby Digital, audio compression rate is relatively low. This fact allows DTS Digital Surround format to add breadth and depth to the reproduced sounds. As a result, DTS Digital Surround features natural, solid and clear sound.

When the system detects DTS Digital Surround signals, the indicator lights up on the display.

Exapmle:
Indications on the display for each surround
•	Dolby Digital
	L	C	R			8	TITLE TRK TUNED CHP PROG EON	RDS	REPEAT 1	A–B
				DIGITAL		3
					AUDIO					MHz
				ProLogic II		CD
	LS	S	RS	STEREO		VCD MP3				kHz
•	DTS Digital Surround
	L	C	R			8	TITLE TRK TUNED CHP PROG EON	RDS	REPEAT 1	A–B
						3
				ProLogic II	AUDIO					MHz
						CD
	LS	S	RS	STEREO		VCD MP3				kHz
•	Dolby Pro Logic II Music
	L		R			8	TITLE TRK TUNED CHP PROG EON	RDS	REPEAT 1	A–B
				DIGITAL		3
						AUDIO				MHz
				ProLogic II
						CD
				STEREO VCD MP3						kHz
•	Dolby Pro Logic II Movie
	L		R			8	TITLE TRK TUNED CHP PROG EON	RDS	REPEAT 1	A–B
				DIGITAL		3
						AUDIO				MHz
				ProLogic II
						CD
				STEREO		VCD MP3				kHz
•	DSP
	L	C	R			8	TITLE TRK TUNED CHP PROG EON	RDS	REPEAT 1	A–B
				DIGITAL		3
						AUDIO				MHz
				ProLogic II		CD
				STEREO		VCD MP3				kHz

* Manufactured under license from Dolby Laboratories. “Dolby,” “Pro	**“DTS” and “DTS Digital Surround” are registered trademarks of
Logic,” and the double-D symbol are trademarks of Dolby	Digital Theater Systems, Inc.
Laboratories. Confidential unpublished works. ©1992–1997 Dolby
Laboratories. All rights reserved.

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