Sun Hong-Ying, Yang Hong-Wu, Tao Zhong-Xing. Realization of Spectrogram Analysis with FPGA[J]. Journal of Electronics & Information Technology, 2011, 33(5): 1238-1242. doi: 10.3724/SP.J.1146.2010.01005
Citation:
Sun Hong-Ying, Yang Hong-Wu, Tao Zhong-Xing. Realization of Spectrogram Analysis with FPGA[J]. Journal of Electronics & Information Technology, 2011, 33(5): 1238-1242. doi: 10.3724/SP.J.1146.2010.01005
Sun Hong-Ying, Yang Hong-Wu, Tao Zhong-Xing. Realization of Spectrogram Analysis with FPGA[J]. Journal of Electronics & Information Technology, 2011, 33(5): 1238-1242. doi: 10.3724/SP.J.1146.2010.01005
Citation:
Sun Hong-Ying, Yang Hong-Wu, Tao Zhong-Xing. Realization of Spectrogram Analysis with FPGA[J]. Journal of Electronics & Information Technology, 2011, 33(5): 1238-1242. doi: 10.3724/SP.J.1146.2010.01005
Spectrogram is a kind of graphic representation of time-frequency analysis of speech signals. Because spectrogram can be adopted to demonstrate the dynamic characteristics of time varying speech signals both in frequency domain and time domain, it has been widely employed in speech analysis and phonetic researches. This paper realizes a spectrogram on Field Programmable Gate Array (FPGA) with Short Time Fourier Transform (STFT) method by using a line structure butterfly process unit which adopted Radix4 decimation in time FFT algorithm. The spectrogram is also displayed on VGA displayer by adopting a non-linear mapping algorithm.
杨海钢, 孙嘉斌, 王慰. FPGA器件设计技术发展综述[J].电子与信息学报.2010, 32(3):714-727浏览[5]Yang Hai-gang, Sun Jia-bin, and Wang Wei. An overview to FPGA device design technologies[J].Journal of Electronics Information Technology.2010, 32(3):714-727[6]朱银兵, 许江宁, 崔国恒, 马建国. 罗兰C周期识别时频分析方法研究[J].电子与信息学报.2010, 32(3):732-736浏览[7]Zhu Yin-bing, Xu Jiang-ning, Cui Guo-heng, and Ma Jian-guo. Time-frequency methods for period identification of Loran-C[J].Journal of Electronics Information Technology.2010, 32(3):732-736
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