EECS 1520 Lecture Notes - Lecture 8: Psychoacoustics, Rgb Color Model, Pixel Density

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: Avi Cohen

Document Summary

It involves taking samples at a fixed rate (sampling rate). If its too fast it will be a large file, if its too slow it will be inaccurate. States that the sample interval is equal or greater than the half period to be able to catch peaks and valleys. A higher bit depth means a more accurate sample. Combining bit depth and sampling rate gives a bit rate. The higher the bit rate, the better the quality, the larger the file size. Because the human ear can hear between 20hz- 20 khz, the nyquist-shannon theorem recommends sampling rate equal or greater than 2 x the max frequency, therefore it would be at least 40khz. What is lossy audio compression techniques? it re(cid:373)oves i(cid:373)per(cid:272)epti(cid:271)le sou(cid:374)ds a(cid:374)d redu(cid:272)es (cid:271)it rate (cid:271)e(cid:272)ause it s a less a(cid:272)(cid:272)urate reprodu(cid:272)tio(cid:374) of the original. Compression and decompression algorithms for audio and video. What is portmanteau? a word combination of coder and decoder or compressor/decompressor.