Result Details
Fractional-Octave Filters for Energy-Efficient Noise Measurement for Sensor Networks
Sysel Petr, doc. Ing., Ph.D., TKO-SIX (FEEC), UTKO (FEEC)
Krajsa Ondřej, Ing., Ph.D., TKO-SIX (FEEC), UTKO (FEEC)
Ryšavý Marek, Ing.
This paper deals with design of digital bandpass filters for fixed-point arithmetic that fulfills requirements of IEC 61260-1 standard for fractional-octave-band filters. The filters use coupled form and downsampling that provides good approximation of the relative attenuation for fractional-octaveband filters and good stability at low-power fixed-point microprocessors which are essential for energy-efficient processing in sensor networks. For the 16-bit resolution, the IEC 61260-1 Class 1 requirements are fulfilled for designed octave-band filters from 63 Hz and for third-octave-band filters from 50 Hz. Implementation of the IEC 61260-1 fractionaloctave-band filters in low-power noise sensors enables advanced measurements that conform international standards for noise measurements in the smart city or in other sensor network infrastructures.
fractional-octave-band filters, coupled-form filter, fixed-point implementation, noise measurement, loudness
@inproceedings{BUT151161,
author="Jiří {Schimmel} and Petr {Sysel} and Ondřej {Krajsa} and Marek {Ryšavý}",
title="Fractional-Octave Filters for Energy-Efficient Noise Measurement for Sensor Networks",
booktitle="2018 10th International Congress on Ultra Modern Telecommunications and Control Systems
and Workshops (ICUMT)",
year="2018",
pages="243--247",
doi="10.1109/ICUMT.2018.8631255",
isbn="978-1-5386-9361-2"
}