Yamaha DVR-S150 Manuel D’Utilisation

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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.

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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. 

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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.

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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.

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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.

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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.