2 - Multimedia Computing (EA ZC473) On-line Lecture-2 Dr....

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Multimedia Computing (EA ZC473) On-line Lecture-2 Dr. Mukesh Kumar Rohil Instructor-In-Charge Brought to you by Virtual University Project Team supervised by Prof. (Dr.) Rahul Banerjee Work Integrated Learning Programmes Division Birla Institute of Technology & Science Pilani – 333031 (Rajasthan) 1 Monday, March 15, 2010 EA ZC473 Multimedia Computing On-line Lecture 2
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Learning Objectives Review of Physics of Sound Uses of Audio in Multimedia Systems Digitization of Sound MIDI: Musical Instrument Digital Interface Quantization and Transmission of Audio Perception of Sound Monday, March 15, 2010 2 EA ZC473 Multimedia Computing On-line Lecture 2
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Various Media Types Text: Plain, Formatted and Hypertext Graphics: 2D and 3D Images: Computer Generated, Photographs and Document Images Audio: Sound, Voice, Speech, Music Monday, March 15, 2010 3 EA ZC473 Multimedia Computing On-line Lecture 2
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Review of Physics of Sound Sound is a continuous longitudinal wave that travels throgh the air. The wave is made up of pressure differences. Example of generating waves: Monday, March 15, 2010 EA ZC473 Multimedia Computing On-line Lecture 2 4
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Review of Physics of Sound … 2 Monday, March 15, 2010 EA ZC473 Multimedia Computing On-line Lecture 2 5 Sound waves have usual wave properties (reflection, refraction, diffraction, etc.) Sound is detected by measuring the pressure level at a point:
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Review of Physics of Sound … 3 Monday, March 15, 2010 EA ZC473 Multimedia Computing On-line Lecture 2 6 The amplitude of a sound is the measure of displacement of the air pressure wave from its mean:
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The Main Fields of Multimedia Systems : Global Structure 7 Monday, March 15, 2010 EA ZC473 Multimedia Computing On-line Lecture 2
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Uses of Audio in Multimedia Systems 1. Including audio cues for where video- conference participants are located. 2. Using voice-recognition to build an interactive
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2 - Multimedia Computing (EA ZC473) On-line Lecture-2 Dr....

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