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Development of Low Cost and Portable Analog Active Noise Control System for Reduction of Low Frequency Noise


Affiliations
1 College of Engineering (A), Andhra University, Visakhapatnam, Andhra Pradesh, India
2 CS & SE Dept., College of Engineering (A), Andhra University, Visakhapatnam, Andhra Pradesh, India
3 Raghu Institute of Technology & Sciences, Visakhapatnam, Andhra Pradesh, India
     

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This paper presents the performance of the portable analog active noise control system developed in this research by conducting experiments for reducing tonal (periodic) noise and broadband noise generated by a ventilation fan. The amount of noise reduction obtained is 3 - 15 dB for one-third octave band tonal frequencies between 63 Hz to 1000 Hz. The broadband noise reduction achieved is 6 - 9 dB for two different fan noise sources. The results showed that the analog ANC system developed is compact and moderately working on reducing low frequency noise sources in air handling acoustic ducts. The several reasons for a low noise reduction performance using analog ANC system are discussed in this paper.

Keywords

Active Noise Control, Analog ANC System, Low Frequency Noise Reduction.
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  • Development of Low Cost and Portable Analog Active Noise Control System for Reduction of Low Frequency Noise

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Authors

T. Venkata Ratnam
College of Engineering (A), Andhra University, Visakhapatnam, Andhra Pradesh, India
P. Seetharamaiah
College of Engineering (A), Andhra University, Visakhapatnam, Andhra Pradesh, India
P. V. G. D. Prasad Reddy
CS & SE Dept., College of Engineering (A), Andhra University, Visakhapatnam, Andhra Pradesh, India
G. V. Satyanarayana
Raghu Institute of Technology & Sciences, Visakhapatnam, Andhra Pradesh, India

Abstract


This paper presents the performance of the portable analog active noise control system developed in this research by conducting experiments for reducing tonal (periodic) noise and broadband noise generated by a ventilation fan. The amount of noise reduction obtained is 3 - 15 dB for one-third octave band tonal frequencies between 63 Hz to 1000 Hz. The broadband noise reduction achieved is 6 - 9 dB for two different fan noise sources. The results showed that the analog ANC system developed is compact and moderately working on reducing low frequency noise sources in air handling acoustic ducts. The several reasons for a low noise reduction performance using analog ANC system are discussed in this paper.

Keywords


Active Noise Control, Analog ANC System, Low Frequency Noise Reduction.

References