基于环形存储结构的非分段式FFT算法

常用的分段式FFT算法响应时间长,硬件资源要求高,而且在模式识别系统设计中分段式FFT算法容易丢失特征值,影响识别精度。针对连续语音识别（鼾声识别）系统设计中特征值的提取提出了一种基于环形存储结构的非分段式流水FFT算法,并在理论上证明了该算法的正确性,通过对实际语音识别系统的测试表明非分段式流水FFT算法不仅耗费的硬件资源比分段式FFT算法低,识别精度高,并且能够连续实时地工作,保证整个系统的实时性!

Non-segmented FFT algorithm based on circular storage structure

Segmented FFT algorithm commonly takes long response time and demands hardware resource,as well as in the pattern recognition system design segmented FFT algorithm is easy to lose characteristic values,which affect the recognition accuracy.In this paper,we present a non-segmented pipelined FFT algorithm based on ring storage structure for the design of continuous speech recognition system eigenvalue extraction.we prove the correctness of the algorithm in theory,and by means of practical tests in the peech r...