1. STEER 2003 By: Jennie S. Malonek CSULA STEER Digital Signal Processing Dr. J. Beyon Summer 2003 An NSF RET Program Co-PIs Dr Boussalis, Dr. Dong, Dr. Liu and Dr. Rad

2. STEER 2003  Introduction  The Project  My Hypothesis  Procedure  Simulation  Conclusion

3. STEER 2003 Introduction 1.CD players and sound cards 2.Tutorials 3.Direct instruction 4.Construction of individual VI (virtual instruments).

4. STEER 2003 The Project  Expectations before the program  The Program

5. STEER 2003 My initial hypothesis Isolating a frequency range of the sound spectrum can alter the sound experienced. In music, multiple instrument frequencies are juxtaposed and difficult to discriminate to the untrained ear. Specialized equalizers can be developed to isolate and present desired frequencies and sounds sampled from a CD. Equalizers will be developed by the participant to isolate single instruments, combine different groups of instruments and modify signal output.

6. STEER 2003 Concepts that students had to master.   Controls, Constants, Inputs   Digital Filters (BPF, BSF, LPF, HPF)   Loops   Signal representation in time and frequency domain   FFT for frequency domain representation   Convolution of signals   Output forms   Frequency coverage with a bank of digital filters

7. STEER 2003 Procedures mastered using LabVIEW 7.0  Controls, Indicators and Constants  Loops  Arrays  Filters  Output forms

8. STEER 2003 Font panel with controls

9. STEER 2003 Numeric indicators

10. STEER 2003 Constant

11. For Loop

12. STEER 2003 Case structure loop

13. STEER 2003 Array

14. Array with cluster

15. STEER 2003 FFT filter

16. STEER 2003 Band Pass Filter

17. STEER 2003 Graphic example of a filter

18. STEER 2003 My Process  Learn LabVIEW basics  Build a band pass filter  Build an equalizer  Build an equalizer for each musical family or collection of instruments  Build an equalizer interface

19. STEER 2003 Simulation

20. STEER 2003 Project Status  Project goals  Initial barriers  Secondary barriers  Current status

21. STEER 2003

22. Brass family

23. STEER 2003 Keyboard family

24. STEER 2003 Voice family

25. STEER 2003 Classroom use Several possible uses of LabVIEW were highlighted such as:  demonstrating the properties and characteristics of sound waves  teaching sine waves  teaching music content with a focus on ear training

26. STEER 2003 Conclusion  The nature of this experience  Overall  DSP  Progress  Communication

27. STEER 2003 Plans and Wishes  Classroom uses  CSULA speakers  Early fieldtrip  Grant writing  Continue working

28. STEER 2003 Acknowledgements  Dr. Beyon (king of waves and the DSP lab, aka the mad clicker)  Kyla Ollie (my partner in crime)  Catherine Alpas ( our student par excellence)  The other STEER PIs (Drs. Boussalis, Rad, Liu and Dong. Who gets the prize for sending the latest e-mail?)  The STEER students (Shenel, Amir, Alex, et. al… Thank you for sharing your love lives with us)  The other STEER participants (especially the chicken salad group)