Sound shadow effect Depends on the size of the obstructing object and the wavelength of the sound. If comparable: Then sound shadow occurs. I:\users\mnshriv\3032.

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Presentation transcript:

Sound shadow effect Depends on the size of the obstructing object and the wavelength of the sound. If comparable: Then sound shadow occurs. I:\users\mnshriv\3032 1

Complex sounds Waveform Time domain Spectrum Frequency domain Obtained using Fourier analysis

Waveform 100 Hz. 200 Hz 300 Hz SUM

Two types of spectra Amplitude spectra: Amplitude as a function of frequency Phase spectra: Phase as a function of frequency

Spectrograms Three dimensional representation of acoustic information. Horizontal axis: Time Vertical axis: Frequency Degree of shading: Intensity 5