摘要
设计并实现了一种嵌入式语音处理和识别系统,核心处理器是TMS320VC5402,语音接口芯片是TLV320AIC10,软件模块包括语音的端点检测、特征参数提取、模板训练、测试识别等。系统使用定点DSP实现了浮点DSP运算,提高了预算的精度,扩大了信号处理的动态范围。试验结果表明,该系统对孤立词特定人识别率为98%,系统体积小、成本低、可扩展性好,方便应用于许多特定场合,如:声控玩具,门禁控制等。有很好的市场前景。
An embedded speech processing and recognition system is designed and realized in this paper. Its hardware’s processor is TMS320VC5402 and speech interface chip is TLV320AIC10. Speech recognition system’s software consists of several modules such as endpoint detection, feature coefficient extraction, training of speech recognition referenced vectors, etc. The system realizes float- point operation on fixed- point digital signal processor, it has higher precision in calculation and wider signal processing dynamic range comparing to fixed- point realization scheme. The experiment confirms that its speech recognition accuracy reaches 98 percent for special person and small vocabulary. This system has small scale, low cost and high capability of expanding. It is very convenient for some special situations, such as the speech controlling toys, gating system etc. It has much market potential.
出处
《微计算机信息》
北大核心
2007年第23期179-181,共3页
Control & Automation
