CS48LV13ENZR Просмотр технического описания (PDF) - Cirrus Logic
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CS48LV13ENZR Datasheet PDF : 26 Pages
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Voice Activity SoundClear
Sensory Inc.
Detector
ASR Enhance™ TrulyHandsfree™ Voice Control
I2S
Raw
PCM
I2S
Clean
PCM
Near
End
Optional Voice Processing Features
PGA
SoundClear ASR Enhance™
Noise
Acoustic Echo Canceller
Reduction Residual Echo Suppressor
NLP
Spectrally Matched
Comfort Noise
PGA
Dynamic
FlexEQ
ALC
Full-Duplex Control+ Voice Activity Detection+ Double-Talk Detection
PGA
Comfort
Noise
Automatic Volume
Control
Automatic Level
Control
Advanced Media Processor
Dynamic
FlexEQ
Noise
Reduction
PGA
Optional Postprocessing Features
GND
VD
VL RESET BUSY PLL/ClkMgr
I2S
Clean
PCM
SPI/I2C
I2S
Raw
PCM
Far
End
Dolby Laboratories, Inc. Audio Postprocessing Algorithms
DTS, Inc. Audio Postprocessing Algorithms
CS48LV13 Block Diagram
SoundClear Voice™ Features
• Flexible and tunable enabling freedom in product ID,
transducer placement and selection
• Robust proprietary algorithms assure consistent
performance across diverse sound environments and
off-axis
• Ambient-aware technologies constantly compensate for
changing noise types and level and varying product
positioning
• HD voice/wideband and narrowband support
• Supports handset, tablet, laptop, and speakerphone
single and multiple microphone configurations
• Conference room–grade AEC plus nonlinear residual
echo suppressor for superior full-duplex speakerphone
operation without echo
• Tx and Rx noise elimination
• Automatic volume control for both Tx and Rx
compensates variations in talker level, proximity, and
orientation
• Ambient-aware volume control compensates for variation
in Rx voice level and near-end noise level
• Tx and Rx comfort noise generators provide natural,
smooth transitions between single-talk Rx, single-talk Tx,
double-talk, and silent states
• Tx spectrally matched comfort-noise generator samples
and synthesizes ambient noise for more transparent talk
state transitions
• Tx and Rx parametric EQ simplifies carrier and industry
compliance, achieving natural sound and compensating
for transducer limitations
—Up to four concurrent Tx and four concurrent Rx filters
—Eight different filter types can be combined to achieve
exact requirements
—Each filter has tunable frequency, gain, and Q or
bandwidth
• Ambient-aware dynamic parametric EQ for Tx or Rx
enables automatic real time tuning for improved
intelligibility and to compensate for transducer
characteristics; responds to
—Tx or Rx stream amplitude
—Near-end ambient noise level
—User controls
• Rx compander for optimal speaker output level
• Mixed and mismatched microphone compensation
• Automatic calibration for up to ±6-dB sensitivity variation
• Compensation for microphone phase differences
DS1057F1
2
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