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Acoustic Changes in Voicemail Transmission Induced by Mobile Phones
1Department of Otolaryngology, University of Health Sciences Derince Research and Training Hospital, Kocaeli, Turkey.
International Archives of Otorhinolaryngology
|October 20, 2025
Summary
Mobile phones significantly alter voice quality during voicemail transmission, affecting frequency and amplitude perturbations. Fundamental frequency remains largely unchanged, indicating specific acoustic impacts.
Area of Science:
- Acoustic analysis
- Speech science
- Telecommunications engineering
Background:
- Widespread mobile phone use necessitates understanding voice quality changes during transmission.
- Objective acoustic alterations in voicemail are not well-documented.
Purpose of the Study:
- To investigate objective voice quality changes in mobile phone voicemail transmission.
- To identify specific acoustic parameters affected by mobile phone voice transmission.
Main Methods:
- Utilized the Multi-Dimensional Voice Program to analyze sustained /a/ vowel phonations.
- Compared free-field voice recordings with mobile phone voicemail recordings from 45 male hospital employees.
- Measured nine acoustic parameters including fundamental frequency (Fo), frequency and amplitude perturbations (PPQ, RAP, ShdB, Shim, APQ), and noise (NHR).
Main Results:
- Fundamental frequency (Fo) showed no significant alteration (p=0.313).
- Frequency perturbation parameters (PPQ, RAP) were significantly impacted (p=0.018, p=0.020).
- Amplitude perturbation parameters (ShdB, Shim, APQ) and noise parameter (NHR) were highly affected (p<0.001).
Conclusions:
- Mobile phones induce significant acoustic alterations in voicemail transmission.
- Voice transmission via mobile phones impacts voice quality, particularly amplitude and noise characteristics.
- Fundamental frequency is a robust parameter resistant to mobile phone transmission effects.
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