Sony TA-AV561A manual Glossary, 16EN, Additional Information

Additional Information

Glossary

Centre mode

Setting of speakers to enhance Dolby Pro Logic Surround mode. To obtain the best possible surround sound, select one of the following four centre modes according to your speaker system.

•PHANTOM mode

Select PHANTOM mode if you have front and rear speakers but no centre speaker. The sound of the centre channel is output from the front speakers.

Front		Front
speaker (L)	speaker (R)

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

Early reflections Reverberation

•NORMAL mode

Select NORMAL mode if you have front and rear speakers and a small centre speaker. Since a small speaker cannot produce enough bass, the bass sound of the centre channel is output from the front speakers.

Front		Centre		Front
	speaker
speaker (L)			speaker (R)

Rear	Rear
speaker (L)	speaker (R)

•WIDE mode

Select WIDE mode if you have front and rear speakers and a large centre speaker. With the WIDE mode, you can take full advantage of Dolby Surround sound.

Front	Centre	Front
	speaker
speaker (L)		speaker (R)

Rear	Rear
speaker (L)	speaker (R)

•3 CH mode

Select 3 CH mode if you have front and centre speakers but no rear speaker. The sound of the rear channel is output from the front speakers to let you experience some of the surround sound without using rear speakers.

Front	Centre	Front
	speaker
speaker (L)		speaker (R)

Rear	Rear
speaker (L)	speaker (R)

Delay time

Time lag between the surround sound output from front speakers and rear speakers. By adjusting the delay time of the rear speakers, you can obtain the feeling of presence. Make the delay time longer when you have placed the rear speakers in a small room or close to your listening position, and make it shorter when you have placed them in a large room or apart from your listening position.

Dolby Pro Logic Surround

Decoding system of Dolby Surround sound standardized in TV programmes 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 centre speaker. You also need to select the appropriate centre mode to enjoy a full effect.

Dolby Surround

Encoding and decoding system of Dolby Surround sound for consumer use. Dolby Surround decodes the extra channels on the Dolby Surround-encoded sound tracks of movie videos and TV programmes and produces sound effects and echoes that make the action seem to envelop you.

The amplifier offers Dolby Surround as one of the pre-programmed sound fields. If you have rear or centre speaker(s), we recommend that you customize the Dolby Surround sound field by selecting the appropriate centre mode to take advantage of Dolby Pro Logic Surround sound.

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 Early

Level reflections Reverberation

Early reflection time Time

Test tone

Signal given out by the amplifier for adjusting the speaker volume. The test tone will come out as follows:

•In a system with a centre speaker (NORMAL/WIDE/3 CH modes)

The test tone is output from the front L (left), centre, front R (right), and rear speakers in succession.

Front (L) Front (R)

Centre

3 CH

Rear (L, R)

NORMAL/WIDE

•In a system without a centre speaker (PHANTOM mode)

The test tone is output from the front and the rear speakers alternately.

Front (L, R)

PHANTOM

Rear (L, R)

16EN

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. The amplifier offers 5 pre-programmed sound fields (ROCK, POPS, CLASSIC, MOVIE and GAME) to let you enjoy surround sound easily.