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Development of Sound Frequency Analyser using an Ultra-Low Power MCU
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 Title & Authors
Development of Sound Frequency Analyser using an Ultra-Low Power MCU
Choi, Jae-Hoon; Chung, Yong-Joo;
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 Abstract
Materials made of metals have their own manifest resonant frequencies. Using this property, the quality test of products from the factory can be performed. An impact is applied to the product and the frequencies of the sound and/or vibration are measured using high-end equipments. They use a general purpose computer or a DSP(: Digital Signal Processor)-based stand-alone system which is usually too large in-size to carry and expensive to build. In this paper, we introduce a system that is developed based on a MSP430 MCU(:Micro-Controller Unit) from TI(: Texas Instruments). The ultra-low power MSP430 MCUs make it possible to make a frequency analyzer in a very small size without the need of using a large-size battery. The proposed system can be used in situations where the frequency analyzer should be carried easily with an investigator and should be built at low cost sacrificing some accuracy. We implemented the system using a launchpad supplied by TI and could confirm that the proposed system could identify with a high-accuracy the frequencies of various artificial and natural sounds.
 Keywords
Ultra-Low Power;MCU;Sound;Frequency Analyser;
 Language
Korean
 Cited by
 References
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