Review of Progress in Quantitative NDE 2007 Review of Progress in Quantitative NDE 2007 Colorado School of Mines Colorado School of Mines Golden, Colorado Golden, Colorado July 22 – July 27, 2007 July 22 – July 27, 2007 Digital Audio Signal Processing and Digital Audio Signal Processing and NDE: NDE: an unlikely but valuable partnership an unlikely but valuable partnership Patrick Gaydecki Patrick Gaydecki School of Electrical and Electronic Engineering School of Electrical and Electronic Engineering The University of Manchester The University of Manchester PO Box 88 PO Box 88 Manchester M60 1QD Manchester M60 1QD United Kingdom United Kingdom [email protected][email protected][UK-44] (0) 161 306 4906 [UK-44] (0) 161 306 4906 www.eee.manchester.ac.uk/research/groups/sisp/research/dsp www.eee.manchester.ac.uk/research/groups/sisp/research/dsp www.signalwizardsystems.com www.signalwizardsystems.com
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Review of Progress in Quantitative NDE 2007 Colorado School of Mines Golden, Colorado July 22 – July 27, 2007 Digital Audio Signal Processing and NDE:
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Review of Progress in Quantitative NDE 2007Review of Progress in Quantitative NDE 2007Colorado School of MinesColorado School of Mines
Golden, ColoradoGolden, ColoradoJuly 22 – July 27, 2007July 22 – July 27, 2007
Digital Audio Signal Processing and NDE:Digital Audio Signal Processing and NDE:an unlikely but valuable partnershipan unlikely but valuable partnership
Patrick GaydeckiPatrick Gaydecki
School of Electrical and Electronic EngineeringSchool of Electrical and Electronic EngineeringThe University of ManchesterThe University of Manchester
PO Box 88PO Box 88Manchester M60 1QDManchester M60 1QD
The Sound Transduction Process:sound energy electrical signal binary processed binary electrical signal sound energy
digital to analogue converter
amplifier
Sample frequency,
kHz
Nyquist frequency,
kHz
Filter coefficients, DSP56309
Filter coefficients, DSP56321
10 5 9888 55000
20 10 4888 27500
40 20 2489 13750
100 50 888 5500
200 100 450 2750
500 250 195 1100
1000 500 85 550
FIR Performance Figures forDSP56309 and DSP56321
DSP Systems at UoM:Generations II and III Processing Repertoire
• Standard filters, e.g. Butterworth etc.• Arbitrary FIR filters• Arbitrary IIR filters• Adaptive filters• Inverse filters• Echo• Real-time gain control• Mixing• Phase delays• Time delays• Real-time FFT and waveform capture• Sine and arbitrary wave synthesis
• Standard filters, e.g. Butterworth etc.• Arbitrary FIR filters• Arbitrary IIR filters• Adaptive filters• Inverse filters• Echo• Real-time gain control• Mixing• Phase delays• Time delays• Real-time FFT and waveform capture• Hilbert transform• Quadrature Signal Processing• Envelope detection• Sine and arbitrary wave synthesis• Tone generation• Shaped noise generation• Modulation, encoding and decoding• Vocoding• JTAG support• 3rd party software support (C++ design tools)