參數(shù)資料
型號(hào)： DSPIC33FJ128GP706A-E/MR
廠商： Microchip Technology
文件頁數(shù)： 53/90頁
文件大?。?/td> 0K
描述： IC DSPIC MCU/DSP 128K 64-QFN
標(biāo)準(zhǔn)包裝： 40
系列： dsPIC™ 33F
核心處理器： dsPIC
芯體尺寸： 16-位
速度： 40 MIP
連通性： CAN，I²C，IrDA，LIN，SPI，UART/USART
外圍設(shè)備： AC'97，欠壓檢測(cè)/復(fù)位，DMA，I²S，POR，PWM，WDT
輸入/輸出數(shù)： 53
程序存儲(chǔ)器容量： 128KB（128K x 8）
程序存儲(chǔ)器類型： 閃存
RAM 容量： 16K x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 18x10b/12b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 125°C
封裝/外殼： 64-VFQFN 裸露焊盤
包裝： 管件
2005 Microchip Technology Inc.
Preliminary
DS70155C-page 55
dsPIC33F
11.13 Speech Encoding/Decoding
Library
The Speech Encoding/Decoding Library performs toll-
quality voice compression and voice decompression.
The library is based on a modified version of the Speex
speech encoder/decoder source code and features a
16:1 compression ratio. It samples speech at 8 kHz and
compresses it to a data rate of 8 kbps. Storing
compressed
speech
for
playback
requires
approximately 1 KB of memory for each second of
speech. The library is especially suitable for the
following voice-based applications:
Answering Machines
Building and Home Safety Systems
Intercoms
Smart Appliances
Voice Recorders
Walkie-Talkies
Any Application using Message Playback
A PC-based speech encoder utility program allows you
to create your own encoded speech files for playback.
Encoded speech files are made from either a PC
microphone or existing WAV file. Once you create the
encoded speech files, they are added to your MPLAB
C30 project, just like a regular source file, and built into
your application. The speech encoder utility allows you to
select four target memory areas to store your speech file:
program Flash memory, RAM and external Flash
memory. External Flash memory allows you to store
many minutes of speech (1 minute of speech requires
60 KB) and it is supported through a general purpose I/O
port.
Key features of the Speech Encoding/Decoding Library
include:
PESQ-based Mean Opinion Score: 3.7-4.2
(out of 5.0)
Code Excited Linear Prediction (CELP) based
coding
2 Analog Input Interfaces – codec or on-chip ADC
2 Analog Output Interfaces – codec or
on-chip PWM
Optional Voice Activity Detection
Storing compressed speech requires 1 KB of
memory per second of speech
Royalty-free (only one-time license fee)
Full compliance with Microchip MPLAB C30
C Compiler Language Tools
“dsPIC30F Speech Encoding/Decoding Library
User’s Guide”
Designed to run on dsPICDEM 1.1 General
Purpose Development Board (DM300014)
相關(guān)PDF資料
PDF描述
REC5-4815SRW/H2/A/M/SMD/CTRL-R CONV DC/DC 5W 36-72VIN 15VOUT
P51-300-S-A-D-20MA-000-000 SENSOR 300PSIS 1/4 NPT 4-20MA
P51-1000-S-P-I12-5V-000-000 SENSOR 1000PSIS M20 5V 12"
P51-750-S-AD-MD-5V-000-000 SENSOR 750PSIS 7/16 UNF 5V MINI
P51-15-G-P-MD-20MA-000-000 SENSOR 15PSI M20-1.5 6G 4-20MA
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
dsPIC33FJ128GP706A-H/MR 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC 16 bit DSC 20MIPS 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(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)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-H/PT 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC 16 bit DSC 20MIPS 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(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)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-I/MR 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC 16Bit 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(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)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-I/MR 制造商:Microchip Technology Inc 功能描述:IC, DSC, 16BIT, 128 KB, 40MHZ, 3.6V, QFN-64; Series:DSPIC; Core Frequency:40MHz; Core Supply Voltage:3.3V; Digital IC Case Style:QFN; No. of Pins:64; Embedded Interface Type:I2C, SPI, UART; No. of I/O's:53; Supply Voltage Min:3V ;RoHS Compliant: No
dsPIC33FJ128GP706A-I/PT 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC 16Bit 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(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)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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