Measurement-Based Characterization of Buzz Noise in Wireless Devices

Abstract

When a device is communicating through wireless connections such as GSM or Wi-Fi, noise in audible range, called buzz noise, is often generated in an audio system and disturbs the audio signal quality. While the buzz noise problem has been found in wireless devices for a long time, there is little understanding of the buzz noise generation mechanism. In this paper, a buzz noise model is proposed considering demodulation and transfer function of the microphone IC front-end. The proposed model is verified through several experiments using recorded audio data in a tablet. Especially, the buzz noise caused by real Wi-Fi signals is reproduced by using the model and compared to recorded buzz noise.

Meeting Name

2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity, EMC, SI and PI 2018 (2018: Jul. 30-Aug. 3, Long Beach, CA)

Department(s)

Electrical and Computer Engineering

Comments

This work was supported in part by the National Science Foundation under Grant No. IIP-1440110.

Keywords and Phrases

Audio acoustics; Audio equipment; Busbars; Electromagnetic compatibility; Microphones; Noise pollution; Radio; Wi-Fi; Wireless local area networks (WLAN); Buzz noise; Measurement-based; Noise generation mechanisms; Noise modeling; Noise problems; Wi-Fi signals; Wireless connection; Wireless devices; Acoustic noise

International Standard Book Number (ISBN)

978-1-5386-6621-0

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2018 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Jul 2018

Link to Full Text

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