Marantz SR7008 appendix Explanation of terms, 257, A2DP

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Explanation of terms	Audyssey Dynamic Surround Expansion
	(A-DSX)
A	Audyssey DSX® is a scalable system that adds new speakers to improve
	surround sound vividness.
A2DP	Starting with a 5.1 system Audyssey DSX® first adds Wide channels for
A2DP is one profile of Bluetooth defined for in-car devices or AV devices	the biggest impact on envelopment. Research in human hearing has
that use wireless communication instead of a cable.	proven that information from the Wide channels is much more critical
AirPlay	in the presentation of a realistic soundstage than the Back Surround
AirPlay sends (plays) contents recorded in iTunes or on an iPhone/iPod	channels found in traditional 7.1 systems. Audyssey DSX® then creates a
touch/iPad to a compatible device via the network.	pair of Height channels to reproduce the next most important acoustical
ALAC (Apple Lossless Audio Codec)	and perceptual cues. In addition to these new Wide and Height channels,
This is a codec for lossless audio compression method developed by	Audyssey DSX® applies Surround Envelopment Processing to enhance the
Apple Inc. This codec can be played back on iTunes, iPod or iPhone. Data	blend between the front and surround channels.
compressed to approximately 60 – 70 % can be decompressed to exactly	Audyssey Dynamic Volume®
the same original data.	Dynamic Volume solves the problem of large variations in volume level
App Store	between television programs, commercials, and between the soft and
App Store is a site that sells application software for such devices as the	loud passages of movies. Audyssey Dynamic EQ® is integrated into
iPhone or iPod Touch, and is operated by Apple Inc.	Dynamic Volume so that as the playback volume is adjusted automatically,
Audyssey Dynamic EQ®	the perceived bass response, tonal balance, surround impression, and
Dynamic EQ solves the problem of deteriorating sound quality as volume	dialog clarity remain the same.
is decreased by taking into account human perception and room acoustics.	Audyssey MultEQ® XT32
Audyssey Dynamic EQ® works in tandem with Audyssey MultEQ® XT32 to	MultEQ® XT32 is a room equalization solution that calibrates any audio
provide well-balanced sound for every listener at any volume level.	system so that it can achieve optimum performance for every listener in
	a large listening area. Based on several room measurements, MultEQ®
	XT32 calculates an equalization solution that corrects for both time and
	frequency response problems in the listening area and also performs a
	fully automated surround system setup.

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