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Presented by Kyla C. Ollie

NSF/STEER Program California State University, Los Angeles Summer 2003 Digital Signal Processing Laboratory Mentored by Dr. Jeffrey Y. Beyon. Presented by Kyla C. Ollie. Agenda. Introduction Program Expectations Program Outcomes LabVIEW Tools The Final Project

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Presented by Kyla C. Ollie

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  1. NSF/STEER Program California State University, Los Angeles Summer 2003 Digital Signal Processing Laboratory Mentored by Dr. Jeffrey Y. Beyon Presented by Kyla C. Ollie

  2. Agenda • Introduction • Program Expectations • Program Outcomes • LabVIEW Tools • The Final Project • Virtual Equalizer Components • Future Uses • Conclusion • Simulation

  3. Introduction In the Digital Signaling Processing Laboratory, teachers learned: • LabVIEW 7.0 program • To construct virtual instruments (VI) that processed, filtered, digitized and displayed time and frequency data • To create Sub VI’s that can be used repeated in in different programs • To construct a virtual equalizer for their final project

  4. Program Expectations • Expectations before the start of the STEER Program were: • To assist professors • To acquire useful engineering research skills • To acquire new ideas that will increase the desire and motivation of students for careers in the Engineering and Technology fields

  5. Program Outcome • Acquired new skills and knowledge in: • Microsoft Office (Excel, PowerPoint & Word) • Technical Writing • Webpage Design (using HTML) • Assigned to the Digital Signal Processing Laboratory we were: • Assigned LabVIEW 7.0 tutorials & assignments • Constructed programs using Graphical User Interfaces (GUI)

  6. LabVIEW 7.0 Tools • Controls, Indicators and Constants • Loops • Arrays • Output forms • Waveform Graphs & Charts • Progress Bars • Filters • Lowpass (LPF) • Highpass (HPF) • Bandpass (BPF) • Bandstop (BSF)

  7. Filters Lowpass Filter (LPF) Highpass Filter (HPF) Bandstop Filter (BSF) Bandpass Filter (BPF)

  8. The Final Project • Both teachers chose to make different types of equalizers for use in their classrooms based upon unique needs. • Equalizers included • Digital Filters • FFT Chips for Time Domain • Sub VI’s • Convolution of Signal Inputs • Outputs

  9. Virtual Equalizer

  10. Virtual Equalizer Components • The virtual equalizer, when linked to a CD player via an audio cable & the computer’s sound card, will display the following components: • Controls for the: • Balance • 10 Frequency Channels • Volume • Music Waveform Chart • 3-D Waveform Graph

  11. Future Plans/Wishes • The Virtual Equalizer & LabVIEW 7.0 (student version) could be utilized in the classroom to visually demonstrate and explain: • Properties and characteristics of sound waves • Sound Frequencies • Sine and cosine waves • My wish is to return and continue research in other laboratories

  12. Conclusion • This summer’s Research Experiences for Teachers (sponsored by the National Science Foundation & CSULA) using LabVIEW helped in: • Acquiring a new programming skill • Developing a new computer-based teaching tool • To develop future stimulating and challenging projects

  13. Thank You • I would like to thank several people for making the STEER Program a success: • Dr. Boussalis • Dr. Beyon • Dr. Dong • Dr. Liu • Dr. Rad • The Graduate and Undergraduate Assistants • Virtual Equalizer Simulation

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