Effects of mobile phone transmission on formant measurements: A large-scale examination based on 306 Japanese male speakers

Yuko Kinoshita, Takashi Osanai

Wednesday, December 14th, 2022, 11am – 12.30pm

Abstract

This study presents a large scale, well-controlled examination of the effects of mobile phone transmission on the first four formants. We used 306 Japanese male speakers recorded simultaneously with a direct microphone and via a mobile phone network. We found that all four formants were significantly impacted by the mobile phone transmission. Further, we found the impact of mobile transmission was largely unpredictable, and the impacts appear to vary speaker to speaker. This may have significant implications in some application areas, such as forensic phonetics, and also for data collection of speech recorded over phones in general.