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Maximum Power Transfer

Maximum Power Transfer

Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...

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Updated: Oct 25, 2025

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Published on: December 20, 2024

Increased maximum power output may improve speech recognition with bone conduction hearing devices.

Håkan Hua¹, Tine Goossens¹, Aaran T Lewis¹

¹Cochlear Bone Anchored Solutions AB, Mölnlycke, Sweden.

International Journal of Audiology

|August 9, 2021

Summary

Higher power bone conduction hearing devices significantly improve speech recognition in quiet and noisy environments for experienced users. These devices also offer better sound quality and are preferred by most users.

Keywords:

Maximum power output bone conduction conductive hearing loss hearing device mixed hearing loss speech recognition

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Area of Science:

Audiology
Hearing device technology

Background:

Bone conduction hearing devices (BCHDs) are used for conductive or mixed hearing loss.
Optimizing BCHD performance is crucial for user benefit.

Purpose of the Study:

To evaluate the impact of maximum power output (MPO) of BCHDs on speech recognition.
To assess subjective sound quality and device preference based on MPO.

Main Methods:

A prospective, randomized cross-over study was conducted.
Speech recognition in quiet and noise was measured.
Subjective sound quality and device preference were assessed.

Main Results:

Higher MPO BCHDs significantly improved speech recognition in quiet (10.5% word recognition score) and noise (0.9 dB SNR improvement).
Higher MPO devices were rated with significantly better sound quality.
81% of subjects preferred the higher MPO device.

Conclusions:

BCHDs with higher MPO enhance speech recognition in various listening conditions.
Increased MPO in BCHDs can lead to improved user satisfaction and auditory performance.