The main directions of improving acoustic intelligence devices

Authors

  • А.Н. Олейников
  • А.В. Бородавка

Abstract

Directional microphones are the most popular devices for acoustic intelligence. Development and improvement of directional microphones can be divided into three stages: “acousto-mechanical” stage, analog signal processing stage, digital signal processing stage. Digital signal processing has a significant influence on the directional microphones development. If super-directive arrays are using as sub-arrays, directivity index will be increased at low frequencies. Advantage in 6 dB increases distance of recording two times.

References

Олейников, А.Н., Войтенко, А.О. Сравнительная характеристика параметров узконаправленных микрофонов // Радиотехника. – 2013. – Вып. № 173. – С. 224-231

Столбов, М.Б. Применение микрофонных решеток для дистанционного сбора речевой информации // Научно-технический вестник информационных технологий, механики и оптики. – 2015. – Т. 15. – No 4. – С. 661-675

Buck, M., Rößler, M. First order differential microphone arrays for automotive applications // Proc. 7th International Workshop on Acoustic Echo and Noise Control, IWAENC. Darmstadt, Germany, 2001, pp. 19 – 22.

McCowan, I.A. Microphone Arrays: A Tutorial. Available at:https://www.idiap.ch/~mccowan/arrays/tutorial.pdf (accessed 01.04.2017).

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How to Cite

Олейников, А., & Бородавка, А. (2017). The main directions of improving acoustic intelligence devices. Radiotekhnika, 2(189), 189–194. Retrieved from http://rt.nure.ua/article/view/184438

Issue

No. 189 (2017): Radiotekhnika

Section

Articles

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