Challenges and Recent Developments in Sound Processing for Baha®

Flynn, Mark

doi:10.1159/000323592

Cited by 7 publications

(8 citation statements)

References 44 publications

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“…The Client, Indication and Connection type were configured using the BC Select step. This enables the hearing care professional to quickly set up the sound processor and incorporates the latest research data on corrections for transcranial attenuation, cross hearing, and transmission loss through the skin (7, 14). The final gain settings were based on the measurement of actual thresholds through the BC Direct function of the fitting software (15).…”

Section: Methodsmentioning

confidence: 99%

Hearing Performance Benefits of a Programmable Power Baha® Sound Processor with a Directional Microphone for Patients with a Mixed Hearing Loss

Flynn¹,

Hedin²,

Halvarsson³

et al. 2012

Clin Exp Otorhinolaryngol

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ObjectivesNew signal processing technologies have recently become available for Baha® sound processors. These technologies have led to an increase in power and to the implementation of directional microphones. For any new technology, it is important to evaluate the degree of benefit under different listening situations.MethodsTwenty wearers of the Baha osseointegrated hearing system participated in the investigation. The control sound processor was the Baha Intenso and the test sound processor was the Cochlear™ Baha® BP110power. Performance was evaluated in terms of free-field audibility with narrow band noise stimuli. Speech recognition of monosyllabic phonetically balanced (PB) words in quiet was performed at three intensity settings (50, 65, and 80 dB sound pressure level [SPL]) with materials presented at 0 degrees azimuth. Speech recognition of sentences in noise using the Hearing in Noise Test (HINT) in an adaptive framework was performed with speech from 0 degrees and noise held constant at 65 dB SPL from 180 degrees. Testing was performed in both the omni and directional microphone settings. Loudness growth was assessed in randomly presented 10 dB steps between 30 and 90 dB SPL to narrow band noise stimuli at 500 Hz and 3,000 Hz.ResultsThe test sound processor had significantly improved high frequency audibility (3,000-8,000 Hz). Speech recognition of PB words in quiet at three different intensity levels (50, 65, and 80 dB SPL) indicated a significant difference in terms of level (P<0.0001) but not for sound processor type (P>0.05). Speech recognition of sentences in noise demonstrated a 2.5 dB signal-to-noise ratio (SNR) improvement in performance for the test sound processor. The directional microphone provided an additional 2.3 dB SNR improvement in speech recognition (P<0.0001). Loudness growth functions demonstrated similar performance, indicating that both sound processors had sufficient headroom and amplification for the required hearing loss.ConclusionThe test sound processor demonstrated significant improvements in the most challenging listening situation (speech recognition in noise). The implementation of a directional microphone demonstrated a further potential improvement in hearing performance. Both the control and test sound processors demonstrated good performance in terms of audibility, word recognition in quiet and loudness growth.

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Section: Methodsmentioning

confidence: 99%

Hearing Performance Benefits of a Programmable Power Baha® Sound Processor with a Directional Microphone for Patients with a Mixed Hearing Loss

Flynn¹,

Hedin²,

Halvarsson³

et al. 2012

Clin Exp Otorhinolaryngol

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“…Bone conduction devices are a surgically implanted system for treating hearing loss via direct bone conduction and provide significantly improved speech understanding in noise for those with conductive and mixed hearing losses (Lin et al, 2006;Stenfelt, 2005). The titanium implant is surgically implanted and is located approximately 50-70 mm behind the ear canal opening and approximately in line with the top of the pinna (Flynn, 2011), to which an external sound processor (transducer) is attached either magnetically or via an abutment. The microphone location on the bone conduction device processor is therefore typically in line with the top of the pinna and approximately 60 mm behind the ear canal opening compared to the microphone location of a conventional BTE hearing aid (Flynn, 2011;Stenfelt, 2005).…”

Section: Bone Conduction Implantsmentioning

confidence: 99%

Clinical outcomes with the Kanso™ off-the-ear cochlear implant sound processor

Mauger

Jones

Nel

et al. 2017

International Journal of Audiology

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“…The latest Cochlear TM Baha 1 3 System sound processor portfolio have both technological and practical advances for children with a wide range of hearing loss. Automated bidirectional hearing and noise reduction systems improve sound quality and clarity; the processors are also available in various child friendly aesthetic colours and have been designed to allow the parents, carers or child to easily identify if the hearing aid is functionally correctly [48,49].…”

Section: Updates In Bahd Design/processors/new Manufacturersmentioning

confidence: 99%