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Generalized Harmonic Analysis and It's Application to Intensive Noise Reduction
GHA is an inharmonic frequency analysis proposed by N.Wiener and featured with its excellent frequency resolution. However it has not been examined practically until we obtain quite powerful computers because of the difficulty that it requires huge amount of calculations. Recently an elegant algorithm enables to reduce calculations was announced by Dr.Hirata,and the authors have improved the algorithm profitable to practical applications. Consequently, it realized both processing speed and accuracy practical stages. In order to utilize GHA’s advantages of precise frequency detection and separation,the authors have been trying to apply GHA to signal processing in audio engineerings.Scratch noise reduction of damaged SP records will be reported as an example.
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