Publications [#60981] of Roger C. Barr

Papers Published

1. Bohs, L.N. and Barr, R.C., Real-time adaptive sampling with the fan algorithm [ECG], Med. Biol. Eng. Comput. (UK), vol. 26 no. 6 (1988), pp. 565 - 73
   (last updated on 2007/04/12)

   Abstract:
   Adaptive sampling of cardiac waveforms can produce higher quality measurements than uniform sampling at the same average rates. The paper presents the design of a device for real-time adaptive sampling with the fan algorithm. Design equations define the relationships between system parameters, allowing choices among hardware complexity, speed or accuracy to be evaluated. The design incorporates a parallel architecture, which can be expanded to achieve any desired peak sampling rate. Examples show the system to be flexible and realistic. A major feature of the design is than fan samples are provided to the user at a fixed rate that the user specified, although they are selected internally at variable rates. Because of this feature, complications in receiving and storing samples at widely varying intervals are entirely avoided, and simple computers such as PCs can be used to collect samples at a rate far below the peak sampling rate. To accomplish fixed-rate transmission, the system itself selects the fan tolerance ϵ based on characteristics of the incoming signal

   Keywords:
   electrocardiography;signal processing;