GPRS在智能家居监控系统中的应用

GPRS技术与具有丰富语音功能的单片机相结合,实现了现代化家居的远程监控。系统采用凌阳SPCE061A作为微控制器,与MC35i无线通信模块及传感器相连监控家居生活空间。当家中出现警情时,系统通过GPRS网络向用户手机发送报警短信,同时语音提示警情出现;用户可通过手机向系统发送短信来实现对家电的控制。此外,利用凌阳的语...     

智能语音巡检机器人系统的设计与实现

基于改善石油石化、核工业等危险行业中对管道、罐体、塔体等介质的监测技术为目的,设计并实现了智能语音巡检机器人系统。系统应用嵌入式开发技术,采用ARM体系的硬件平台,通过智能语音控制机器人行走,灵活采集现场的数据,通过无线传输将视频、重要数据发送到客户端,进而能够远距离监测现场。文章阐述了系统的体系结构和主要实现功能,分析了实现过程中的关键技术,实际测试中达到较为满意的效果。     

一种压缩语音识别模板库容量的方法

在非特定人孤立词语音识别系统中,模板库的容量成为限制识别范围和性能的重要原因,过大的模板库在成本和实时性方面都不利于语音识别系统的大规模使用。提出了一种用于大幅压缩语音识别模板库容量的方法,适用于非特定人孤立词识别系统。该算法借鉴生态学上各物种对专一环境和普通环境的适应程度上的折衷,通过类似不同生物间争夺食物的演化过程选出最具代表性的模板组成模板库。模拟结果表明,该算法通过去除近似雷同的模板以及在某些情况下用一个大模板取代数个模板,能在不显著影响识别率的前提下,明显减少所需模板库的容量。     

A New On-Line Robust Approach to Design Noise-Immune Speech Recognition Systems

Hereafter, we present a new approach dealing to cope with the harmful effects of noise on speech recognition systems (SRS). This approach is oriented to hardware redundancy and it is essentially a modification of the classic Recovery Blocks scheme. When compared to conventional approaches using Fast Fourier Transform (FFT) and Hamming Code, the primary benefit of such a technique is to improve system performance when operating in real (i.e., noisy) environments. The second advantage is related to the considerably low complexity and reduced area overhead required for implementation. We implemented three full versions of the proposed algorithm: one running of a PC microcomputer, and a second one slightly modified to run on a TMS-320C67 Texas DSP microprocessor module. Both of them were described in the C language. Finally, a last implementation was prototyped on a HW-SW development environment based on the same Texas microprocessor and on the FLEX10K20 FPGA Altera Component.