摘要
本文利用动态数据采集卡PCI-4451和图形化编程语言LabVIEW设计了一种基于虚拟仪器的双通道语音数据采集系统,该系统可以满足对动态语音信号进行高精度、高频率采样的要求,同时,可以对每个通道的动态输入范围进行单独设置,以保证量化噪声对动态范围不同的信号的影响尽可能保持一致。
An virtual instrument based dual channel speech acquisition system is developed using dynamic signal acquisition card PCI -4451 and LabVIEW - a graphic based programming language. The proposed system can satisfy the request to acquire dynamic speech signal with high accuracy and high sampling frequency. The input dynamic range can be set independently, for each channel, so as to ensure that the quantization noise has the almost same impact to signal within different dynamic range.
出处
《微处理机》
2005年第4期86-87,91,共3页
Microprocessors
