RSC-4128
Speech Recognition Processor
Data Sheet
© 2006 Sensory Inc.
P/N 80-0206-R
1
General Description
The RSC-4128 represents Sensory’s next generation
speech and analog I/O mixed signal processor. The
RSC-4128 is designed to bring high performance
speech I/O features to cost sensitive embedded and
consumer
products.
Based
on
an
8-bit
microcontroller, the RSC-4128 integrates speech-
optimized digital and analog processing blocks into a
single chip solution capable of accurate speech
recognition; high quality, low data-rate compressed
speech; and advanced music. Products can use one
or all features in a single application.
The RSC-4128 operates in tandem with the radically
new FluentChip™ technology, offering the best
speech recognition technologies in the industry.
FluentChip™ includes Hidden Markov Model-Neural
Net hybrid speech recognition. Accuracy in all kinds
of noise is dramatically improved.
New Speaker
Verification technology is perfect for voice password
security
applications
that
must
work
in
noisy
environments. New high quality compressed speech
technology reduces data rates by 5 times. New 8-
voice MIDI-compatible music includes drum tracks,
effectively
increasing
instruments
beyond
8.
Simultaneous music and speech round out the
FluentChip™ technology.
FluentChip™ technology tools also support the
revolutionary
capability
of
creating
speaker
independent recognition sets by simply typing in the
desired recognition vocabulary! A few keystrokes
creates a recognition set in seconds without the wait
or cost of recording sessions to train the recognizer,
speeding time to sales.
A new and unique Audio Wakeup feature listens
while the RSC-4128 is in power down mode. When
an audio event such as a clap or whistle occurs,
Audio Wakeup will wakeup the RSC-4128 for speech
or application tasks.
Audio Wakeup is perfect for
battery applications that require continuous listening
and long battery life.
In addition to best-in-class recognition performance,
the RSC-4128 provides further on-chip integration of
features. A complete speech I/O application can be
built with as few additional parts as a clock crystal,
speaker,
microphone,
and
few
resistors
and
capacitors.
Moreover, the RSC-4128 provides an unprecedented
level
of
cost
effective
system-on-chip
(SOC)
integration, enabling many applications that require
DSP and/or audio processing. The RSC-4128 may
be
used
as
a
general-purpose
mixed
signal
processor
platform
for
custom
algorithms,
technologies and applications.
Features
Full Range of FluentChip™ Capabilities
Noise-robust
Speaker
Independent
and
Speaker
Dependent recognition
Many languages now available for international use
Speaker Verification – voice password biometric security
Word Spotting and Continuous Listening recognition
options
High quality, 2.4-7.8 kbps speech synthesis & sound
effects, with Sensory SX
™ synthesis technology
8 voice MIDI-compatible music synthesis coincident with
speech; drum track feature enables additional voices
Voice Record & Playback (voice memo)
Audio Wake Up from sleep with whistles or claps
Touch Tone (DTMF) output
Integrated Single-Chip Solution
8-bit microcontroller
128K bytes ROM
16 bit ADC, 10 bit DAC & PWM, and microphone pre-
amplifier
Independent, programmable Digital Filter engine
4.8 KBytes total RAM (262 bytes “user” application RAM)
Five timers (3 GP, 1 Watchdog, 1 Multi Tasking)
Twin-DMA, Vector Math accelerator, and Multiplier
Built-in Analog Comparator Unit (4 inputs)
External memory bus: 20-bit Address(1Mbyte), 8-bit Data
On chip storage for SD, SV, templates (10 templates)
24 configurable I/O lines with 10 mA (typical) outputs
Code security - no ROM dump capability
Uses low cost 3.58MHz crystal (internal PLL)
Low EMI design for FCC and CE requirements
Fully nested interrupt structure with up to 8 sources
Optional Real Time Clock
Long Battery Life
2.4 – 3.6V operation
12mA (typical) operating current at 3V
2 low power modes; 1
µA typical sleep current
Full Suite of Quick & Powerful Tools
Quick Text-to-SI (T2SI™) text entry to build noise robust
SI recognition sets: low cost & push-button–no recording!
QuickSynthesis™ 4 for push-button speech compression
Integrated
Development
Environment,
C
Compiler,
Debugger & In Circuit Emulator from Phyton, Inc.
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