Precise frequency estimation methods for acoustic frequencies are needed in several sensor applications, however when a huge number of sensors must be monitored (e.g. sensor networks or sensor arrays) the trade-off among accuracy, speed and costs must be considered. In this paper a low-cost method for accurate frequency estimation is presented. The method can be easily implemented in a commercial microcontroller, and both analytical study and experimental results show that it is faster and more accurate than a simple FFT.
An Accurate and Simple Frequency Estimation Method for Sensor Applications
CAMPOBELLO, Giuseppe;CANNATA', GIANLUCA;DONATO, Nicola;GALEANO, MASSIMILIANO;SERRANO, Salvatore
2012-01-01
Abstract
Precise frequency estimation methods for acoustic frequencies are needed in several sensor applications, however when a huge number of sensors must be monitored (e.g. sensor networks or sensor arrays) the trade-off among accuracy, speed and costs must be considered. In this paper a low-cost method for accurate frequency estimation is presented. The method can be easily implemented in a commercial microcontroller, and both analytical study and experimental results show that it is faster and more accurate than a simple FFT.File in questo prodotto:
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