Signal processing 1 357 Digital techniques 1 352 Data processing 143 Mathematics 86 Design and construction 71 MATLAB 62 Speech processing systems 56 Image processing 52 Texas Instruments TMS320 series microprocessors 40 Digital communications 39 Electric filters, Digital 38 Recording and reproducing 33 Sound 33 Wireless communication systems 31 Algorithms 30 System analysis 29 Coding theory 28 Detectors 27 Integrated circuits 26 Electric power systems 22 Embedded computer systems 22 Intelligent control systems 21 Statistical methods 21 Biomedical engineering 20 Computer programs 19 Analog-to-digital converters 18 Electric power system stability 18 Electrocardiography 18 Adaptive signal processing 17 Very large scale integration 17