Yamaha DVR-S150 Owners Manual - Page 93

Glossary, Audio formats

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GLOSSARY Glossary Audio formats ■ Dolby Digital Dolby Digital is a digital surround sound system that gives you completely independent multi-channel audio. With 3 front channels (left, center, and right), and 2 surround stereo channels, Dolby Digital provides 5 full-range audio channels. With an additional channel especially for bass effects, called LFE (low frequency effect), the system has a total of 5.1-channels (LFE is counted as 0.1 channel). By using 2-channel stereo for the surround speakers, more accurate moving sound effects and surround sound environment are possible than with Dolby Surround. ■ Dolby Pro Logic A surround system that takes a 4-channel signal and records it as a 2-channel signal, then by way of some arithmetic processing converts back to an independent 4-channel signal for playback. ■ Dolby Pro Logic II Dolby Pro Logic II is an improved technique used to decode vast numbers of existing Dolby Surround software. This new technology enables a discrete 5-channel playback with 2 front left and right channels, 1 center channel, and 2 surround left and right channels (instead of only 1 surround channel for conventional Pro Logic technology). Music and Game modes are also available for 2-channel sources in addition to the Movie mode. ■ DTS (Digital Theater Systems) The 5.1-channel surround system adopted by most movie theaters. With an abundance of audio data, it is able to provide authentic-sounding effects. ■ Linear PCM (LPCM) A signal that is changed to digital format without compression. A CD is recorded with 16-bit sound at 44.1 kHz, while DVD recording is anywhere from 16 bits at 48 kHz to 24 bits at 192 kHz, which makes it a higher quality sound than CD. This signal also has a type called Packed PCM (P.PCM) that can be compressed without any loss of data. ■ Matrix 6.1 CinemaStation incorporates a Matrix 6.1 decoder for Dolby Digital and DTS multi-channel software that enables 6.1-channel reproduction by adding the surround back channel to existing 5.1-channel format. (The surround back channel is created from surround left and right channels, and output from a virtual surround back speaker.) With this additional channel, you can experience more dynamic and realistic moving sound especially scenes with "fly-over" and "fly-around" effects. 88

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GLOSSARY
88
■
Dolby Digital
Dolby Digital is a digital surround sound system that gives
you completely independent multi-channel audio. With 3
front channels (left, center, and right), and 2 surround
stereo channels, Dolby Digital provides 5 full-range audio
channels. With an additional channel especially for bass
effects, called LFE (low frequency effect), the system has
a total of 5.1-channels (LFE is counted as 0.1 channel). By
using 2-channel stereo for the surround speakers, more
accurate moving sound effects and surround sound
environment are possible than with Dolby Surround.
■
Dolby Pro Logic
A surround system that takes a 4-channel signal and
records it as a 2-channel signal, then by way of some
arithmetic processing converts back to an independent
4-channel signal for playback.
■
Dolby Pro Logic II
Dolby Pro Logic II is an improved technique used to
decode vast numbers of existing Dolby Surround software.
This new technology enables a discrete 5-channel
playback with 2 front left and right channels, 1 center
channel, and 2 surround left and right channels (instead of
only 1 surround channel for conventional Pro Logic
technology). Music and Game modes are also available for
2-channel sources in addition to the Movie mode.
■
DTS (Digital Theater Systems)
The 5.1-channel surround system adopted by most movie
theaters. With an abundance of audio data, it is able to
provide authentic-sounding effects.
■
Linear PCM (LPCM)
A signal that is changed to digital format without
compression. A CD is recorded with 16-bit sound at 44.1
kHz, while DVD recording is anywhere from 16 bits at 48
kHz to 24 bits at 192 kHz, which makes it a higher quality
sound than CD. This signal also has a type called Packed
PCM (P.PCM) that can be compressed without any loss of
data.
■
Matrix 6.1
CinemaStation incorporates a Matrix 6.1 decoder for
Dolby Digital and DTS multi-channel software that
enables 6.1-channel reproduction by adding the surround
back channel to existing 5.1-channel format. (The
surround back channel is created from surround left and
right channels, and output from a virtual surround back
speaker.) With this additional channel, you can experience
more dynamic and realistic moving sound especially
scenes with “fly-over” and “fly-around” effects.
Glossary
Audio formats