Design and verification of a measurement setup for wireless remote microphone systems (WRMSs)

Husstedt, Hendrik; Kahl, Júlia Martinelli Magalhães; Fitschen, Christina; Griepentrog, Sebastian; Frenz, Marlitt; Jürgens, Tim; Tchorz, Jürgen

doi:10.1080/14992027.2021.1915505

Cited by 3 publications

(4 citation statements)

References 19 publications

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“…A similar argument about the need for testing of RMs by using more achievable setups of equipment to measure real-world speech intelligibility has supported guidelines drawn up by European Union of Hearing Aid Acousticians (EUHA, 2017), based on evidence presented in Husstedt et al (2022). The focus of that work is slightly different from ours, in that it aims to demonstrate the likely benefits to individuals, although still in a classroom environment.…”

Section: Introductionmentioning

confidence: 69%

“…Reverberation time (RT 60 ) was uniformly flat across the 125 to 8,000 Hz range, around 120 ms. The physical volume was about 70% of the audiology room used by Husstedt et al (2022), with a slightly shorter reverberation time (theirs was 140 ms).…”

Section: Methodsmentioning

confidence: 99%

“…Although standardization of test methodologies and measures has enabled the production of clinically affordable test boxes, such as for HAs, the methods investigated by us, Salehi et al (2018) and Husstedt et al (2022), require the use of larger, and more specialist, facilities, and equipment. This will limit the widespread uptake of any measures developed from these bodies of work.…”

Section: Limitation and Opportunitymentioning

confidence: 99%

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Toward a Real-World Technical Test Battery for Remote Microphone Systems Used with Hearing Prostheses

et al. 2023

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Remote microphones (RMs) enable clearer reception of speech than would be normally achievable when relying on the acoustic sound field at the listener's ear (Hawkins, J Sp Hear Disord 49, 409–418, 1984). They are used in a wide range of environments, with one example being for children in educational settings. The international standards defining the assessment methods of the technical performance of RMs rely on free-field (anechoic) delivery, a rarely met acoustic scenario. Although some work has been offered on more real-world testing (Husstedt et al., Int J Audiol 61, 34–45. 2022), the area remains under-investigated. The electroacoustic performance of five RMs in a low-reverberation room was compared in order to assess just the RM link, rather than measurements at the end of the signal chain, for example, speech intelligibility in human observers. It pilots physical- and electro-acoustic measures to characterize the performance of RMs. The measures are based on those found in the IEC 60118 standards relating to hearing aids, but modified for diffuse-field delivery, as well as adaptive signal processing. Speech intelligibility and quality are assessed by computer models. Noise bands were often processed into irrelevance by adaptive systems that could not be deactivated. Speech-related signals were more successful. The five RMs achieved similar levels of good predicted intelligibility, for each of two background noise levels. The main difference observed was in the transmission delay between microphone and ear. This ranged between 40 and 50 ms in two of the systems, on the upper edge of acceptability necessary for audio-visual synchrony.

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Section: Introductionmentioning

confidence: 69%

Section: Methodsmentioning

confidence: 99%

Section: Limitation and Opportunitymentioning

confidence: 99%

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Toward a Real-World Technical Test Battery for Remote Microphone Systems Used with Hearing Prostheses

et al. 2023

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“…The speech‐in‐noise testing rig used in this study is an adaptation of that used by the Europäische Union der Hörakustiker (EUHA) and Husstedt et al. in which the laboratory was calibrated to record the sound pressure as dB sound pressure level (SPL) [18, 19]. The EUHA [18] speech‐in‐noise testing rig was adapted to use dBA measures which emulate a situation where people are listening to speech from a distance.…”

Section: Methodsmentioning

confidence: 99%

An assistive listening device improves hearing following aneurysmal subarachnoid haemorrhage

Gaastra,

Whyte,

Hankin

et al. 2024

Euro J of Neurology

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Background and purposeHearing impairment is common following aneurysmal subarachnoid haemorrhage (aSAH). Previous studies have demonstrated that auditory processing disorder (APD) is the primary underlying pathology. Assistive listening devices (ALDs) can be used to manage APD but have not been explored in aSAH. The aim of this study was to assess the benefit of an ALD for patients reporting hearing difficulty after aSAH.MethodsThis was a prospective pilot single‐arm intervention study of an ALD for APD following aSAH. Patients who reported subjective hearing difficulty following aSAH were identified from the Wessex Neurological Centre aSAH database. Speech‐in‐noise was evaluated using the Bamford−Kowal−Bench (BKB) test under 60 and 65 dB noise conditions. BKB performance was compared with and without an ALD. Cognition was assessed using the Addenbrooke's Cognitive Examination‐III.ResultsFourteen aSAH patients with self‐reported hearing loss were included in the analysis. Under both noise conditions the ALD significantly improved BKB performance (60 dB, Z = −3.30, p < 0.001; 65 dB, Z = −3.33, p < 0.001). There was no relationship between cognition and response to the ALD.ConclusionsThis study demonstrates the marked benefit of ALDs to manage APD following aSAH, regardless of cognitive status. This finding has implications for the management of this common yet disabling deficit which impacts quality of life and employment. A further trial of ALDs in this patient group is needed to test whether these large, short‐term benefits can be practically translated to the community for long‐term benefit when used at home.

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(Luftleitungs‑)Hörsysteme – Indikation, Bauformen und Einsatzmöglichkeiten

Husstedt¹,

Schönweiler

2022

HNO

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Design and verification of a measurement setup for wireless remote microphone systems (WRMSs)

Cited by 3 publications

References 19 publications

Toward a Real-World Technical Test Battery for Remote Microphone Systems Used with Hearing Prostheses

Toward a Real-World Technical Test Battery for Remote Microphone Systems Used with Hearing Prostheses

An assistive listening device improves hearing following aneurysmal subarachnoid haemorrhage

(Luftleitungs‑)Hörsysteme – Indikation, Bauformen und Einsatzmöglichkeiten

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