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Hardware implementation. DSP: ADSP-2181, 16 bit, fixed point, 40MHz D/A: 300kHz, 14 bit PC: development environment: LabVIEW. Solutions using fixed - point arithmetic. }. Need to optimise the coefficients of the filters to exploit the available numerical range. Limited precision
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Hardware implementation • DSP: ADSP-2181, 16 bit, fixed point, 40MHz • D/A: 300kHz, 14 bit • PC: development environment: LabVIEW
Solutions using fixed-point arithmetic } Need to optimise the coefficients of the filters to exploit the available numerical range • Limited precision • Saturation
Algorithm Interrupt Random number Filters D/A conversion Return
Features • Flexible 1/f α noise generator • Digital noise generation (DSP) • Analog output (D/A conversion) • Stand-alone or host computer controlled • High accuracy • Easy upgrade in speed, accuracy