DATA SHEET
MSP 34x0G
2.4. Source Selection and Output Channel Matrix
2.5.2. BBE High Definition Sound
The Source Selector makes it possible to distribute all
source signals (one of the demodulator source chan-
nels, SCART, or I2S input) to the desired output chan-
nels (loudspeaker, headphone, etc.). All input and out-
put signals can be processed simultaneously. Each
source channel is identified by a unique source
address.
License Notice: BBE is a registered trademark of
BBE Sound Inc., the BBE Logo is a trademark of BBE
Sound Inc. A license from BBE Sound Inc. is required
before a BBE-version of the MSP 34x0G can be pur-
chased.
BBE High Definition Sound or, also called, Sonic Maxi-
mizer technology improves the clarity of music when
played back via loudspeakers. A more “life like” feeling
is created by BBE. The BBE-approved Micronas
implementation works in the digital domain and thus
needs no external components and does not suffer
from tolerances and aging effects.
For each output channel, the sound mode can be set
to sound A, sound B, stereo, or mono by means of the
output channel matrix.
If Automatic Sound Select is on, the output channel
matrix can stay fixed to stereo (transparent) for
demodulated signals.
All MSP 34x0G are shipped without BBE except other-
wise ordered. When a BBE-version of the MSP 34x0G
is ordered, it carries a special marking on the chip for
identification. The BBE Sonic Maximizer functionality
must be enabled by writing a "license key" into the
MSP 34x0G. For information on how to obtain this
license key from Micronas, please contact your Micro-
nas sales representative.
2.5. Audio Baseband Processing
2.5.1. SRS WOW
License Notice: SRS, SRS WOW, and the SRS Logo
are trademarks of SRS Labs, Inc. A license from SRS
Labs, Inc. is required before an SRS-version of the
MSP 34x0G can be purchased.
2.5.3. Micronas VOICE
SRS Labs’ WOW technology enlarges the sound
image field and improves the bass performance of
television speakers. Manufacturers can save costs by
licensing WOW while utilizing smaller speakers and
still provide a higher quality audio experience.
Micronas VOICE was developed to add the following
improvements to speech signals:
– Increase speech signal over background noise to
increase intelligibility in noisy environments
– Move voice to the foreground, closer to the listener,
while other sounds are moved to the back
WOW consists of three sections:
– Clarity Improvement,
– Improve voices that are hard to understand, leave
clear voices largely undisturbed
– 3D-Audio
(SRS, Sound Retrieval System),
and
Micronas VOICE dynamically enhances those portions
of speech that are important for intelligibility while at
the same time decreasing portions of the signal that
disturb intelligibility. The average amplitude of the sig-
nal is not changed.
– Bass Enhancement (TruBass).
Key features of WOW include:
– Wider and taller sound image field
– Larger sweet spot
According to speech theory, there are two main effects
that affect the intelligibility of speech. Micronas VOICE
combines both effects to achieve a maximum
enhancement of intelligibility.
– Deep, rich bass tones
– Forward and backward masking: For intelligibility,
consonants are more important than vowels, but the
amplitude of consonants is much lower than that of
vowels. The consonants are masked by the vowels.
Therefore, the amplitude of consonants is increased
and the amplitude of vowels decreased.
– Quality improvements to audio listening experience
– Improved clarity of speech
All MSP 34x0G are shipped without SRS except other-
wise ordered. When an SRS-version of MSP 34x0G is
ordered, it carries a special marking on the chip for
identification. The SRS WOW functionality must be
– Phonemes and formants: Most important for intelli-
gibility are the second to fourth formants of speech.
These formants are detected and increased, while
other parts of the signal are decreased.
enabled by writing
a
"license key" into the
MSP 34x0G. For information on how to obtain this
license key from Micronas, please contact your Micro-
nas sales representative.
Micronas
May 27, 2003; 6251-476-1DS
13
MICRONAS [ MICRONAS ]
