1. Week 7 Frequency domain 1.Sinusoids and sound 2.Sinusoids form a basis for periodic functions 3.Sinusoids used in signal compression 4.Sinusoids used in FCC regulations 5.Sinusoids and LTI systems

2. Notes/frequency domain/frequencies Notes/frequency domain/musical scale Notes/frequency domain/phase Notes/frequency domain/images

3. 1. Basis for periodic signals Fourier Series of f

4. Discrete Fourier Series of f

5. 20134 n

7. Topics/FrequencyDomain/FSExamples Topics/FrequencyDomain/DFSExamples

8. 2. Sinusoids in signal compression

10. 3. FCC regulations The FCC allocates the (electromagnetic) spectrum to various uses according to this chart for a more complete picture see sidebars/radio/freq

11. The AM radio band are in the range 535-1705 kHz Carriers are separated by 10kHZ, 540kHz, 550kHz,.. The FM radio band are in the range 88-108 MHz Carriers are separated by 0.2MHz, 88.1MHz, 88.3MHz,.. Analog TV channels occupy 6 MHz of bandwidth ch2-4, 54-72MHz; 5-6, 76-88MHz; ch7-13, 174-216MHz