dsPIC33F
DS70155C-page 52
Preliminary
2005 Microchip Technology Inc.
11.7
Soft Modem Library
The Microchip data modem library is composed of
ITU-T compliant algorithms for V.21, V.22, V.22bis,
V.23, V.32 and V.32bis modem recommendations. Bell
standard 103 is also included in this library.
V.21, V.23 and Bell 103 are Frequency Shift Keying
(FSK)
modems.
V.32,
V.32bis
and
V.22bis
are
Quadrature Amplitude Modulation (QAM) modems. V.22
is a Quadrature Phase Shift Keying (QPSK) modem.
V.21, V.22, V.22bis, V.32 and V.32bis are all 2-wire, full-
duplex modems. V.23 is a full-duplex modem when it
operates with a 75 bps backwards channel.
V.22bis includes fallback to V.22, V.23 and V.21
standards. V.32bis optionally falls back to V.22bis, V.22
and V.21 standards.
The dsPIC DSC Soft Modem is well-suited for small
transaction oriented applications, such as, but not
limited to:
POS Terminals
Set Top Boxes
Drop Boxes
Fire Panels
Internet Enabled Home Security Systems
Internet Connected Power, Gas and Water Meters
Internet Connected Vending Machines
Smart Appliances
Industrial Monitoring
Functions supporting ITU-T Recommendation V.42 are
provided with each library. V.42 contains a High-Level
Data Link Control (HDLC) protocol, referred to as Link
Access Procedure for Modems (LAPM) and defines
error correcting protocols for modems.
All data pump modulation and demodulation functions
are written in ASM30 assembly code yielding optimal
code size and execution time. The AT, V.42 and data
pump APIs are written in C30 C Compiler language.
Electronic documentation accompanies the modem
library to help you become familiar with and implement
the library functions. A comprehensive
“dsPIC30F Soft
Modem Library User’s Guide” describes the required
APIs for the AT, V.42 and data pump layers.
11.8
Speech Recognition Library
The dsPIC Speech Recognition Library provides voice
control of embedded applications that require an
alternative user interface. With a vocabulary of up to
100 words, the Speech Recognition Library allows
users to control their application using spoken
commands. The Speech Recognition Library is an ideal
front end for hands-free products, such as modem
appliances, security panels and cell phones. The
Speech Recognition Library has very modest memory
and processing requirements and is targeted for the
dsPIC30F5011, dsPIC30F5013, dsPIC30F6012 and
dsPIC30F6014 processors.
Key features of the dsPIC DSC Speech Recognition
Library include:
US English language support
Speaker independent recognition of isolated
words
No speaker training is required
Hidden Markov Modem-based recognition system
Recognition time < 500 msec
Master library of 100 common words (listed in the
“dsPIC30F Speech Recognition Library User’s
Guide”)
Windows operating system-based utility allows
the user to create a custom word library from the
master library
Additional words can be added to the master
library (fee based)
Data tables can be stored in external memory
Optional keyword activation and silence detection
Optional system self-test using a predefined
keyword
Flexible API
Full compliance with Microchip MPLAB C30 C
Compiler Language Tools
“dsPIC30F Speech Recognition Library User’s
Guide” and “dsPIC30F Word Library Builder
User’s Guide”
Designed to run on dsPICDEM 1.1 General
Purpose Development Board (DM300014)
11.8.1
RESOURCE REQUIREMENTS
Sampling Interface: Si-3000 Audio Codec
operating at 12.0 kHz
System Operating Frequency: 12.288, 18.432 or
24.576 MHz
Computational Power: 8 MIPS
Program Flash Memory: 18 KB + 1.5 KB for each
library word
RAM: < 3.0 KB
相關(guān)PDF資料
PDF描述
PIC16C67-04/P IC MCU OTP 8KX14 PWM 40DIP
PIC16C76-04/SO IC MCU OTP 8KX14 A/D PWM 28SOIC
PIC16C63-04/SO IC MCU OTP 4KX14 PWM 28SOIC
PIC24HJ128GP310-I/PT IC PIC MCU FLASH 128KB 100TQFP
PIC16F874-04I/P IC MCU FLASH 4KX14 EE 40DIP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
dsPIC33FJ128GP310T-I/PF 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 16 Bit MCU/DSP 40MIPS 128KB FLASH RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
dsPIC33FJ128GP310T-I/PT 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 16 Bit MCU/DSP 40MIPS 128KB FLASH RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
DSPIC33FJ128GP506-I/PT 制造商:Microchip Technology Inc 功能描述:
dsPIC33FJ128GP706A-E/MR 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 16 Bit MCU/DSP 64LD 40MIPS 128KB FLASH RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
dsPIC33FJ128GP706A-E/PT 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 16Bit 40MIPS 128KB Flash RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
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