SPFirst-L04

SPFirst-L04 - Signal Processing First READING ASSIGNMENTS...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
8/31/2003 © 2003, JH McClellan & RW Schafer 1 Signal Processing First Lecture 4 Spectrum Representation 8/31/2003 © 2003, JH McClellan & RW Schafer 3 READING ASSIGNMENTS ± This Lecture: ± Chapter 3, Section 3-1 ± Other Reading: ± Appendix A: Complex Numbers ± Next Lecture: Ch 3, Sects 3-2, 3-3, 3-7 & 3-8 8/31/2003 © 2003, JH McClellan & RW Schafer 4 LECTURE OBJECTIVES ± Sinusoids with DIFFERENT Frequencies ± SYNTHESIZE by Adding Sinusoids ± SPECTRUM Representation ± Graphical Form shows DIFFERENT Freqs = + = N k k k k t f A t x 1 ) 2 cos( ) ( ϕ π 8/31/2003 © 2003, JH McClellan & RW Schafer 5 FREQUENCY DIAGRAM ± Plot Complex Amplitude vs. Freq 0 100 250 –100 –250 f (in Hz) 3 / 7 j e 3 / 7 j e 2 / 4 j e 2 / 4 j e 10
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8/31/2003 © 2003, JH McClellan & RW Schafer 6 Another FREQ. Diagram Frequency is the vertical axis Time is the horizontal axis A-440 8/31/2003 © 2003, JH McClellan & RW Schafer 7 MOTIVATION ± Synthesize Complicated Signals ± Musical Notes ± Piano uses 3 strings for many notes ± Chords: play several notes simultaneously ± Human Speech ± Vowels have dominant frequencies ± Application: computer generated speech ± Can all signals be generated this way? ± Sum of sinusoids? 8/31/2003 © 2003, JH McClellan & RW Schafer 8 Fur Elise WAVEFORM Beat Notes 8/31/2003 © 2003, JH McClellan & RW Schafer 9 Speech Signal: BAT ±
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/03/2010 for the course EE 200 taught by Professor Zadeh during the Spring '08 term at USC.

Page1 / 7

SPFirst-L04 - Signal Processing First READING ASSIGNMENTS...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online