PERFORMANCE OF THE IMS-A100 DIGITAL SIGNAL PROCESSOR FOR REAL-TIME DECONVOLUTION

The real-time determination of impulse responses finds applications in many areas, such as sonar and non-destructive testing. This paper pre sents an evaluation of the IMS A100 DSP when computing the impulse res ponse by means of an efficient algorithm which requires only a single convolution. Two architectures are considered, both using a cascade of four IMS A100s mounted on an IMS B009 evaluation board. Several topic s involving accuracy, speed, interfacing and range of application are addressed. An overall analysis of accuracy and speed is carried out us ing simulated and experimental data. Criteria to optimize deconvolutio n quality and to increase throughput rates are also given. Results sho w that when processing bursts of 1024 samples, rates above 150 impulse responses per second are attained, thus affording new opportunities t o increase resolution and speed in several research and industrial fie lds.