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TEACHING DSP CONCEPTS USING MA
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2010-07-01
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ABSTRACT
A graphically-orientedMATLAB programwritten by the au-
thors facilitates teaching real-world digital signal process-
ing concepts such as quantization of digital filter coeffi-
cients that occur in fixed-point processors, for example the
widely used TMS320C5x. While many universities have
or plan to buy the inexpensive floating-point TMS320C31
DSKs for pedagogical reasons, this MATLAB program sim-
ulates certain fixed-point effects on these floating-point de-
vices and eliminates the need to purchase expensive special-
ized software programs or extra hardware. The programde-
scribed in this paper provides an interactive graphical user
interface which communicates directly with the DSK, and
demonstrates in real-time how coefficient quantization ad-
versely affects filter performance, without the need for te-
dious programming of the TMS320C31.
A graphically-orientedMATLAB programwritten by the au-
thors facilitates teaching real-world digital signal process-
ing concepts such as quantization of digital filter coeffi-
cients that occur in fixed-point processors, for example the
widely used TMS320C5x. While many universities have
or plan to buy the inexpensive floating-point TMS320C31
DSKs for pedagogical reasons, this MATLAB program sim-
ulates certain fixed-point effects on these floating-point de-
vices and eliminates the need to purchase expensive special-
ized software programs or extra hardware. The programde-
scribed in this paper provides an interactive graphical user
interface which communicates directly with the DSK, and
demonstrates in real-time how coefficient quantization ad-
versely affects filter performance, without the need for te-
dious programming of the TMS320C31.
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