Computer Science 1033A/B Lecture 12: Week 12 - Audio

• School: Western University
• Department: Computer Science
• Course: Computer Science 1033A/B
• Professor: Laura Reid

Document Summary

Prepackaged: purchase a cd, download from sound companies, download from itunes. Create your own: recording program using computer"s operating system = low quality, recording studio with equipment such as dat (digital audio tape) = higher quality, musical instruments connected to computer, record midi (musical instrument digital. Volume: the higher the wave, the louder the sound. Pitch/frequency: the closer together, the higher the pitch. Rule states you must take at least two samples for every cycle of the wave. If you take less than two, you will get a completely different sound wave. Sample rate: the number of samples we take per second of audio, or number of times per second the waveform is measured. The number of samples per second is represented in hertz (hz), and the number of 1000 samples per second is represented as kilohertz (khz) For cd quality you need 44,100 samples per second = 44,100 hz or 44. 1 khz. Voice-only recordings (telephone quality) = 8 khz.