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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 on theme: "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."— Presentation transcript:

1 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

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

3 Waveform 100 Hz. 200 Hz 300 Hz SUM

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

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

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