Advertisement

Topics

Mobile phones: A trade-off between speech intelligibility and exposure to noise levels and to radio-frequency electromagnetic fields.

08:00 EDT 8th May 2019 | BioPortfolio

Summary of "Mobile phones: A trade-off between speech intelligibility and exposure to noise levels and to radio-frequency electromagnetic fields."

When making phone calls, cellphone and smartphone users are exposed to radio-frequency (RF) electromagnetic fields (EMFs) and sound pressure simultaneously. Speech intelligibility during mobile phone calls is related to the sound pressure level of speech relative to potential background sounds and also to the RF-EMF exposure, since the signal quality is correlated with the RF-EMF strength. Additionally, speech intelligibility, sound pressure level, and exposure to RF-EMFs are dependent on how the call is made (on speaker, held at the ear, or with headsets). The relationship between speech intelligibility, sound exposure, and exposure to RF-EMFs is determined in this study. To this aim, the transmitted RF-EMF power was recorded during phone calls made by 53 subjects in three different, controlled exposure scenarios: calling with the phone at the ear, calling in speaker-mode, and calling with a headset. This emitted power is directly proportional to the exposure to RF EMFs and is translated into specific absorption rate using numerical simulations. Simultaneously, sound pressure levels have been recorded and speech intelligibility has been assessed during each phone call. The results show that exposure to RF-EMFs, quantified as the specific absorption in the head, will be reduced when speaker-mode or a headset is used, in comparison to calling next to the ear. Additionally, personal exposure to sound pressure is also found to be highest in the condition where the phone is held next to the ear. On the other hand, speech perception is found to be the best when calling with a phone next to the ear in comparison to the other studied conditions, when background noise is present.

Affiliation

Journal Details

This article was published in the following journal.

Name: Environmental research
ISSN: 1096-0953
Pages: 1-10

Links

DeepDyve research library

PubMed Articles [8752 Associated PubMed Articles listed on BioPortfolio]

Evidence for age-related cochlear synaptopathy in humans unconnected to speech-in-noise intelligibility deficits.

Cochlear synaptopathy (or the loss of primary auditory synapses) remains a subclinical condition of uncertain prevalence. Here, we investigate whether it affects humans and whether it contributes to s...

Mobile Internet Telephony Improves Speech Intelligibility and Quality for Cochlear Implant Recipients.

The objective of this study was to investigate the benefit of mobile Voice over Internet protocol (VoIP) over conventional mobile phone calls (Global System for Mobile Communications, GSM) on speech i...

A dissociation between speech understanding and perceived reverberation.

As direct-to-reverberant energy ratio (DRR) decreases or decay time increases, speech intelligibility tends to decrease for both normal-hearing and hearing-impaired listeners. Given this relationship,...

Longitudinal Growth in Single Word Intelligibility Among Children With Cerebral Palsy From 24 to 96 Months of Age: Predicting Later Outcomes From Early Speech Production.

Purpose Children with cerebral palsy (CP) are at risk for significant communication problems. Reduced speech intelligibility is common, even for those who do not have speech motor deficits. Developmen...

EEG can predict speech intelligibility.

Speech signals have a remarkable ability to entrain brain activity to the rapid fluctuations of speech sounds. For instance, one can readily measure a correlation of the sound amplitude with the evoke...

Clinical Trials [4020 Associated Clinical Trials listed on BioPortfolio]

The Phonak EduLink-System in Students With Specific Performance Deficits in Speech-in-Noise Intelligibility

In the management and remediation of students with specific performance deficits in speech-in-noise intelligibility, most often, a "triad" approach for treatment is used, which includes di...

Comparison Between Neuro 1 and Neuro 2 Cochlear Implant Speech Processors

The present study aims to evaluate patient satisfaction and audiological performance with their current cochlear implant speech processor, the Neuro 1, and to compare it with the satisfact...

Bacterial Contamination of Anaesthetists' Hands by Personal Mobile Phones Used in the Operating Theatre

The use of mobile phones in the operating room (OR) has become widespread, because of the lack of reports on serious problems. Since mobile phones are used in close body contact and since,...

Speech Intelligibility and Cognition: Are Inpatients Impaired by Noise?

Study Objectives: - 1. To examine the extent to which noise typical of nursing units reduces speech intelligibility in acutely ill hospitalized patients - 2. To examine ...

Effectiveness of Hearing-aid Based Wind-noise Algorithm

Wind-noise is highly disturbing to hearing impaired individuals wearing hearing aids who wish to participate in outdoor conversations where wind is present or during activities such as wal...

Medical and Biotech [MESH] Definitions

Ability to make speech sounds that are recognizable.

Hearing loss due to exposure to explosive loud noise or chronic exposure to sound level greater than 85 dB. The hearing loss is often in the frequency range 4000-6000 hertz.

Measurement of the ability to hear speech under various conditions of intensity and noise interference using sound-field as well as earphones and bone oscillators.

Treatment for individuals with speech defects and disorders that involves counseling and use of various exercises and aids to help the development of new speech habits.

Noise present in occupational, industrial, and factory situations.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article