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- W2373897588 abstract "The system adopts a new type single chip Atmegal128 as its host controller.Fast Fourier transformation(FFT) is used to analyze audio signal.After going through double threshold circuit,one input channel signal is put directly into the AD convert circuit and the other input channel signal is converted by RMS circuit and then outputs to the AD converter.With the disposal of the single chip,the result is displayed by the liquid crystal.This system can accurately measure the audio signal frequency range of 20 Hz~10 kHz,the peak voltage range of 10 mVpp~10 Vpp,resolution ratio of 20 Hz.Finally,the system provides us with the distortion degree of the frequency spectrum and sinusoidal signal." @default.
- W2373897588 created "2016-06-24" @default.
- W2373897588 creator A5004557326 @default.
- W2373897588 date "2013-01-01" @default.
- W2373897588 modified "2023-09-28" @default.
- W2373897588 title "Audio Signal Analyser" @default.
- W2373897588 hasPublicationYear "2013" @default.
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