Yamaha NOT FOND DSP-Z11 - Manual (Page 129)

Glossary
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■ DTS-HD High Resolution Audio
DTS-HD High Resolution Audio is an high resolution audio technology developed for
high-definition disc-based media including HD DVD and Blu-ray Disc. Selected as an
optional audio standard for both HD DVD and Blu-ray Disc, this technology delivers
sound that is virtually indistinguishable from the original, offering a high-definition
home theater experience. Supporting bitrates up to 3.0 Mbps for HD DVD and 6.0
Mbps for Blu-ray Disc, DTS-HD High Resolution Audio can carry up to 7.1 discrete
channels of 24-bit/96 kHz audio simultaneously. Supported by HDMI version 1.3 and
designed for the optical disc players and AV receivers/amplifiers of the future, DTS-HD
High Resolution Audio also remains fully compatible with the existing multichannel
audio systems that incorporate DTS Digital Surround.
■ HDMI
HDMI (High-Definition Multimedia Interface) is the first industry-supported,
uncompressed, all-digital audio/video interface. Providing an interface between any
source (such as a set-top box or AV receiver) and an audio/video monitor (such as a
digital television), HDMI supports standard, enhanced or high-definition video as well
as multi-channel digital audio using a single cable. HDMI transmits all ATSC HDTV
standards and supports 8-channel digital audio, with bandwidth to spare to
accommodate future enhancements and requirements.
When used in combination with HDCP (High-bandwidth Digital Content Protection),
HDMI provides a secure audio/video interface that meets the security requirements of
content providers and system operators. For further information on HDMI, visit the
HDMI website at “http://www.hdmi.org/”.
■ LFE 0.1 channel
This channel reproduces low-frequency signals. The frequency range of this channel is
from 20 Hz to 120 Hz. This channel is counted as 0.1 because it only enforces a low-
frequency range compared to the full-range reproduced by the other 5/6 channels in
Dolby Digital or DTS 5.1/6.1-channel systems.
■ MP3
One of the audio compression methods used by MPEG. It employs the irreversible
compression method, which achieves a high compression rate by thinning out the data
of hardly audible part to the human ears. It is said to be capable of compressing the data
quantity by about 1/11 (128 kbps) while maintaining a similar audio quality to music
CD.
■ MPEG-4 AAC
An MPEG-4 audio standard. As it allows compression of data at a bit rate lower than
that of MPEG-2 AAC, it is used among others for mobile telephones, portable audio
players and other low-capacity devices requiring high sound quality.
In addition to the above types of devices, MPEG-4 AAC is also used to distribute
contents on the Internet, and as such is supported by computers, media servers and
many other devices.
■ Neo:6
Neo:6 decodes the conventional 2-channel sources for 6- channel playback by the
specific decoder. It enables playback with the full-range channels with higher
separation just like digital discrete signal playback. There are two modes available:
“Music mode” for music sources and “Cinema mode” for movie sources.
■ PCM (Linear PCM)
Linear PCM is a signal format under which an analog audio signal is digitized,
recorded and transmitted without using any compression. This is used as a method of
recording CDs and DVD audio. The PCM system uses a technique for sampling the
size of the analog signal per very small unit of time. Standing for “Pulse Code
Modulation”, the analog signal is encoded as pulses and then modulated for recording.
■ Sampling frequency and number of quantized
bits
When digitizing an analog audio signal, the number of times the signal is sampled per
second is called the sampling frequency, while the degree of fineness when converting
the sound level into a numeric value is called the number of quantized bits. The range
of rates that can be played back is determined based on the sampling rate, while the
dynamic range representing the sound level difference is determined by the number of
quantized bits. In principle, the higher the sampling frequency, the wider the range of
frequencies that can be played back, and the higher the number of quantized bits, the
more finely the sound level can be reproduced.
■ S-video signal
With the S-video signal system, the video signal normally transmitted using a pin cable
is separated and transmitted as the Y signal for the luminance and the C signal for the
chrominance through the S-video cable. Using the S VIDEO jack eliminates video
signal transmission loss and allows recording and playback of even more beautiful
images.
■ WAV
Windows standard audio file format, which defines the method of recording the digital
data obtained by converting audio signals. It does not specify the compression (coding)
method so a desired compression method can be used with it. By default, it is
compatible with the PCM method (no compression) and some compression methods
including the ADPCM method.
■ WMA
An audio compression method developed by Microsoft Corporation. It employs the
irreversible compression method, which achieves a high compression rate by thinning
out the data of hardly audible part to the human ears. It is said to be capable of
compressing the data quantity by about 1/22 (64 kbps) while maintaining a similar
audio quality to music CD.
■ xvYCC
A color space standard supported by HDMI version 1.3. It is a more extensive color
space than sRGB, and allows the expression of colors that could not be expressed
before. While remaining compatible with the color gamut of sRGB standards, xvYCC
expands the color space and can thus produce more vivid, natural images. It is
particularly effective for still pictures and computer graphics.