2005/11/16 Site search has been updated. Articles in Introduction to Sound Measurement can be found easily.
2005/07/13 Measurement of PC's soundboard by Realtime analyzer, 1 has been updated. Note about distortion measurement has been added. Analysis of Japanese voice, 1 has been updated. Spectrogram display of voice has been added.
2005/07/12 Airport noise analysis 1, 2 have been updated. Spectrogram display of the aircraft noise has been added.
2005/06/10 Instruction for advanced use 3, DAT and digital video recording for outdoor measurement has been updated. Recording procedure and SPL calibration were added.
2005/06/10 THD analyzer has been updated. Basic knowledge of the Total Harmonic Distortion and its measurement procedure is described.
2005/04/27 Sweep generator has been updated. How to measure the frequency response is added.
2005/03/28 Automobile Noise Analysis 2 has been revised. Spectrogram and running ACF analyses have been added.
2005/03/25 Automobile Noise Analysis has been revised. How to perform the measurement and analysis is further described.
2005/03/16 Measurement of a rotational speed of motor has been revised. How to perform the measurement and analysis is further described.
2005/01/20 Instruction for advanced use 4, measurement data management, has been added. How to save data and record sound is described.
2004/12/10 Spectrogram has been added.
2004/12/08 Pulse generator has been revised. Impulse response measurement by using the pulse generator and recorder is added.
2004/10/18 Laboratory exercises for analog circuits and electronics, by Prof. Marion Hagler at Mississippi State University
2004/10/14 Top page has been renewed
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