Development and Technical Validation of the Mobile Based Assistive Listening System: A Smartphone-Based Remote Microphone.

Abstract:

Purpose:The purpose of this research note is to describe the development and technical validation of the Mobile Based Assistive Listening System (MoBALS), a free-of-charge smartphone-based remote microphone application. Method:MoBALS Version 1.0 was developed for Android (Version 2.1 or higher) and was coded with Java using Eclipse Indigo with the Android Software Development Kit. A Wi-Fi router with background traffic and 2 affordable smartphones were used for debugging and technical validation comprising, among other things, multicasting capability, data packet loss, and battery consumption. Results:MoBALS requires at least 2 smartphones connected to the same Wi-Fi router for signal transmission and reception. Subscriber identity module cards or Internet connections are not needed. MoBALS can be used alone or connected to a hearing aid or cochlear implant via direct audio input. Maximum data packet loss was 99.28%, and minimum battery life was 5 hr. Other relevant design specifications and their implementation are described. Conclusions:MoBALS performed as a remote microphone with enhanced accessibility features and avoids overhead expenses by using already-available and affordable technology. The further development and technical revalidation of MoBALS will be followed by clinical evaluation with persons with hearing impairment.

journal_name

Am J Audiol

authors

Lopez EA,Costa OA,Ferrari DV

doi

10.1044/2016_AJA-16-0016

subject

Has Abstract

pub_date

2016-10-01 00:00:00

pages

288-294

issue

3S

eissn

1059-0889

issn

1558-9137

pii

2573090

journal_volume

25

pub_type

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