Mono; Stereo; Surround; Surround Decoder Type - B&K Reference 50 Owner's Manual

Audio Mode description

MONO

Sums the incoming audio information to a single channel and routes it to the desired speaker. Use this mode for
listening to the FM tuner with weak RF signal strengths. It is also useful in the case of a large listening group and
it is difficult to put everyone near the optimum listening position.

STEREO

Sums the incoming audio information into Left, Right, and Mono channels and routes them to the desired speaker
selection. Use this mode for a purist (STEREO 2) listening or for expanding the stereo image to additional
speakers.

SURROUND

Best suited for use with surround encoded movies and music and multi-channel encoded bitstreams. In addition,
this mode may be used to extract multi-channel surround information from 2-channel audio using one of the six
available surround decoder types. Use this mode to process both Movies and Music without THX processing.
For use with 2-channel analog or digital audio, pressing SURROUND allows selecting from one of the six
available matrix surround decoder types, Pro Logic Movie (Cinema), Pro Logic Music, Pro Logic II Movie
(Cinema), Pro Logic II Music, Neo:6 Movie (Cinema) and Neo:6 Music, and routes the extracted multi-channel
information to the desired number of speakers.
For use with multi-channel encoded bitstreams such as Dolby Digital and DTS-ES, pressing SURROUND allows
selecting between a Movie (Cinema) and Music playback option. Movie may be used to emphasize the surround
side speakers while Music emphasizes the surround back speakers. SURROUND 6 allows for either Dolby Digital
EX or DTS-ES matrix surround decoder processing for the extraction of an additional surround back channel. In
addition, DTS-ES discrete 6.1 is automatically selected during playback of appropriately encoded DTS-ES
material.

Surround Decoder Type

With the release and popularity of multi-channel discrete encoding formats such as Dolby Digital and DTS-ES,
has come the need for new and improved matrix surround decoder technologies. Combining our technology
partnerships with Dolby Laboratories, Digital Theater Systems, Lucasfilm Ltd. and Motorola Semiconductor, and
utilizing our Plug n Play processor operation, we offer six surround decoder types that may be used in a very
simple manner to extract multi-channel surround information from 2-channel movie or music source material.

Pro Logic Movie (Cinema)

When listening to movies using the Dolby Pro Logic movie (cinema) decoder, there is further enhancement to the
cinematic quality by adding processing that emphasizes the surround sounds for use with movie action and
special effects.

Pro Logic Music

When listening to music using the Dolby Pro Logic music decoder, there is further enhancement to the sound
quality by adding processing that emphasizes the musical effects.

Pro Logic II Movie (Cinema)

When listening to movies using the Dolby Pro Logic II movie (cinema) decoder with stereo TV shows or Dolby
Surround-encoded programs, there is further enhancement to soundfield directionality, which is close to the
quality of discrete 5.1-channel sound. Conventional narrow band monaural surround channel is played as stereo
with a more realistic feel and movement.

Pro Logic II Music

When listening to music using the Dolby Pro Logic II music decoder, stereo music recordings are able to provide
a wide and deep soundfield. The Dolby Pro Logic II music decoder allows three independent parameters to tailor
the sound to your own preference. The Center Width Control allows the sound of the center channel to be placed
between its own speaker and the left and right front speakers. The Dimension Control allows for the adjustment of
where the soundfield is placed in the front to rear image to allow a desired balance from all speakers. The
Panorama control extends the front stereo image to include the surround speakers, thereby creating a wrap
around imaging effect.
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