MKL16Z128VLH4 Freescale Semiconductor, MKL16Z128VLH4 Datasheet - Page 49

• Manufacturer Part Number: MKL16Z128VLH4
• Description: ARM Microcontrollers - MCU CORTEX M0+CORE FLEX USB
• Manufacturer: Freescale Semiconductor
• Series: KL16r

Specifications of MKL16Z128VLH4

• Rohs: yes
• Core: ARM Cortex M4
• Processor Series: KL1
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 48 MHz
• Program Memory Size: 128 KB
• Data Ram Size: 16 KB
• On-chip Adc: Yes
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• A/d Bit Size: 16 bit
• A/d Channels Available: 1
• Interface Type: I2C, I2S, SPI, UART
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 28 to 70
• Number Of Timers: 3
• On-chip Dac: Yes
• Program Memory Type: Flash

Alango Voice
Communication
Package
Voice processing and echo
cancellation
The Alango Voice Communication Package
(VCP) is a suite of digital signal processing
technologies enabling high-quality voice
communication for a variety of applications,
including automotive hands-free, mobile
phones, Bluetooth headsets, audio and
videoconferencing systems, intercom systems
and others. VCP was designed to enable the
highest possible voice quality in various acoustic
environments while consuming relatively low
MIPS and memory resources. VCP provides
natural support for narrowband (8 kHz) and
wideband (16 kHz) speech. For wideband
speech, VCP implements special mechanisms
providing significant reduction of MIPS and
memory requirements compared to doubling
them with the brute-force approach without a
noticeable degradation of output speech quality.
The current seventh VCP generation
accumulates many years of practical Alango
experience to provide a scalable, highly optimized
solution for voice communication applications.
Beyond software DSP technologies, Alango
has developed a unique set of auxiliary software
and hardware tools facilitating development,
debugging, testing, acoustic tuning, problem
identification and reporting.
VCP Components and
Structure
VCP consists of basic, control and add-on
blocks. Basic VCP comprises technologies that
freescale.com/ARM
Development and Tuning
Tools: VCP Configurator
VCP Configurator is a PC Windows
graphical application allowing controlling
VCP functionality. All VCP blocks and their
parameters are shown according to their real
position in the signal processing chains. All
parameters are provided with short prompts
as well as detailed help. VCP configurator
generates an acoustic profile structure that can
be uploaded into a device under tuning in real
time via UART or other available interface.
Speech
are “must have” for virtually any full-duplex,
hands-free voice communication system. It
also includes control blocks adding flexibility
and ease of system debugging, testing and
acoustic tuning. Add-on blocks include
technologies providing additional benefits to
end users.
VCP Structure and Signal Flow
Echo
Noise
Spk
Mic
Mic
Microphone
Basic VCP
Adaptive
Array
EQ
Figure 1: VCP structure and signal flow
Canceller
VCP Add-ons
Acoustic
Echo
AVQ
Easy Listen
Suppressor
Noise
VCP Features and Performance
• Supported sampling rates: 8 kHz, 16 kHz
• Fast filter convergence (< 300 ms) with no
• Convergence in double talk and intense
• Robustness to speaker signal distortion
• Echo canceller filter length up to 500 ms
• Residual echo level (echo suppression
• Noise suppression up to -30 dB
• Noise adaptation time: 100–700 ms
• Maximal AGC gain: 24 dB
Control
initial echo
noise
level): up to -70 dB
(depending on noise type)
Vybrid Controller Solutions
Automotive Key Partners
Profile Manager
Data Logger
AGC/DRC
AGC/DRC
Suppressor
Noise
EQ
Downlink
Signal
Uplink
Signal
Profile
Data
Log
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