June 23, 2013
June 23, 2013
June 26, 2013
Division Experimentation & Lab-Oriented Studies
23.1150.1 - 23.1150.13
Teaching Speech and Audio Processing Implementations Using LabView program and DAQ boardsAbstract We present our pedagogy for teaching speech and audio processing implementations using LabView program and DAQ boards. In the Electrical and Computer Engineering Technology (ECET) curriculum, the LabView program and DAQ board data acquisition have been used as a popular platform for teaching a real-time DSP (digital signal processing) course in the junior year. This course is the second signal processing course which is offered in electrical and computer engineering technology (ECET) program according to the current DSP industry trend and student interests in their career development. The course has a significant component on real- time filtering applications. The pre-requisite includes student working knowledge and skills of Laplace transform, Fourier series, Fourier transform, and different types of analog active filter design. After completing the course, students not only become familiar with MATLAB and LabView software development tools, but also gain the real-time signal processing experience. They are able to design the low-pass and band-pass filters and then program them using MATLAB and LabView software, and apply the software and hardware interface for real speech applications. Therefore, in this paper, we first proposed a comlete DSP platform, which consists of an audio amplifier, an analog low-pass filter, a DAQ board interface circuit, and a DSP software to perform the real-time data processing. Using the proposed DSP platform, we present our instructional techniques for digital filter implementations in real-time processing. The student survey results show that the adoption of LabView and DAQ boards to teach DSP and digital filter design is a learning effective tool.References1. L. Tan, Digital Signal Processing: Fundamentals and Applications. Elsevier/Academic Press, 2008.2. L. Tan and J. Jiang, A Simple DSP Laboratory Project for Teaching Real-Time Signal Sampling Rate Conversions, the Interface Technology Journal, Vol. 9, No. 1, Fall 2008.3. W. Gan, S. Kuo, “Teaching DSP Software Development: From Design to Fixed-Point implementations,” IEEE Trans. on Education, vol. 49, issue, 1, pp. 122-131, February 2006.4. L. Tan, J. Jiang, “Teaching Advanced Digital Signal Processing with Multimedia applications in Engineering Technology Programs,” ASEE Annual Conference, June 2009.5. Ifeachor, Emmanuel and Jervis, Barrie. Digital Signal Processing, A Practical Approach, Prentice-Hall Publishing, 2002.6. de Vegte, Joyce Van. Fundamentals of Digital Signal Processing, Prentice-Hall Publishing, 2002.
Jiang, J., & Tan, L. (2013, June), Teaching Speech and Audio Processing Implementations Using LabView Program and DAQ Boards Paper presented at 2013 ASEE Annual Conference & Exposition, Atlanta, Georgia. https://peer.asee.org/22535
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