| Digit Weight and Development of a Virtual Noise Analyzer |
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| 作者姓名： | YANG Chang qi QIN Shu ren ZHANG Yue jun |
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| 摘 要： | Traditional noise octave analyzers consist of filter network and weight network based on hardware. In order to realize a noise octave analysis by software, a digit weight method based on FFT is proposed. Using the method, digit weight and digit system error modification for virtual noise octave analyzer can be realized. Because of digit weight and digit system error modification, precision and stability of the instrument can be improved greatly. As an application, which combines the method of digit weight with the technique of digit system error modification, a low cost and high precision virtual real time noise octave analyzer is developed.
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| 关 键 词： | Noise measurement Virtual instrument Digit weight FFT |
Digit Weight and Development of a Virtual Noise Analyzer |
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| YANG Chang qi,QIN Shu ren,ZHANG Yue jun.Digit Weight and Development of a Virtual Noise Analyzer[J].Storage & Process,2001(5):59. |
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| Authors: | YANG Chang qi QIN Shu ren ZHANG Yue jun |
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| Abstract: | Traditional noise octave analyzers consist of filter network and weight network based on hardware. In order to realize a noise octave analysis by software, a digit weight method based on FFT is proposed. Using the method, digit weight and digit system error modification for virtual noise octave analyzer can be realized. Because of digit weight and digit system error modification, precision and stability of the instrument can be improved greatly. As an application, which combines the method of digit weight with the technique of digit system error modification, a low cost and high precision virtual real time noise octave analyzer is developed. |
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| Keywords: | Noise measurement Virtual instrument Digit weight FFT |
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