Computer Science 1033A/B Study Guide - Realaudio

• School: Western University
• Department: Computer Science
• Course: Computer Science 1033A/B
• Professor: Bob Larose

Document Summary

Lecture #11 sound: we rely on sound to enhance multimedia application: easily captures the attention of users, facilitate easy learning, sets the mood, sound incorporated into video and animation production, sounds: pressure waves of air, waveform: visualize the sounds as a series of recurring waves, volume: the higher the wave the louder the sound, pitch/frequency: the closer together the waves, the higher the pitch. Sound representation the nyquist limit: sound presented: in a multimedia application sound must be in a digital form (string of 1s and 0s, to convert analog sounds to digital sounds: thousands of samples are taken of the sound waves and recorded as bits, sound recorded: computers have a sound card which converts the sound wave from a microphone (analog to digital, sound card: adc: analog to digital converting recording, dac: digital to analog converter playing audio, nyquist limit: we must take 2 or more samples per wave.