The Personal Hearing System—A Software Hearing Aid for a Personal Communication System

Grimm, Giso; Guilmin, Gwénaël; Poppen, Frank; Vlaming, Marcel S. M. G.; Hohmann, Volker

doi:10.1155/2009/591921

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…There are currently various systems that are able to transmit a remote microphone signal to the APs, e.g., traditional telecoil or FM transmission systems [14], [15] and new state of the art digital wireless transmission systems [16]. However, these systems either disable the local microphones or significantly amplify the remote microphone signal to provide the HI individuals with a clean, high SNR signal [16].…”

Section: Introductionmentioning

confidence: 99%

Binaural Noise Cue Preservation in a Binaural Noise Reduction System With a Remote Microphone Signal

Szurley

Bertrand

Dijk³

et al. 2016

IEEE/ACM Trans. Audio Speech Lang. Process.

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A general binaural noise reduction system is considered that employs the multi-channel Wiener filter with partial noise estimation (MWF⌘) allowing for an explicit trade-off between noise reduction and binaural noise cue preservation. In this paper, it is assumed that along with the general binaural system, a remote microphone signal with a high input signalto-noise ratio (SNR) is available for inclusion in the MWF⌘. The use of this remote microphone signal with a high input SNR allows for a simultaneous increase in both noise reduction performance and preservation of the binaural noise cues. To further increase the performance, a modification to the partial noise estimation (PNE) variable, ⌘, is proposed which relies on exploiting the aforementioned trade-off by either constraining the output SNR or binaural noise cues to the same level before and after the addition of the remote microphone signal. The validity of the theoretical results are supplemented via simulations using a binaural setup with a single speech and noise source.

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Section: Introductionmentioning

confidence: 99%

Binaural Noise Cue Preservation in a Binaural Noise Reduction System With a Remote Microphone Signal

Szurley

Bertrand

Dijk³

et al. 2016

IEEE/ACM Trans. Audio Speech Lang. Process.

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show abstract

“…Using this loop, the components in the higher step are available at the beginning of each step. In each step represented by τ , there is another loop (line [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] where the probability of transition from each channel state k ∈ {1, . .…”

Section: Efficient Calculation Of Channel Transition Probabilities Us...mentioning

confidence: 99%

“…15.4 [1] and IEEE 802.15.6 [2] for the MAC and PHY layers. In addition to health monitoring [3], WBANs support a vast variety of applications from gaming and entertainment [4], to fitness and sport [5], assisting with visual or aural disabilities [6], and safety applications [7].…”

Section: Introductionmentioning

confidence: 99%

Power-Adaptive Communication With Channel-Aware Transmission Scheduling in WBANs

Arghavani,

Zhang,

Huang

et al. 2024

IEEE Internet Things J.

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Radio links in Wireless Body Area Networks (WBANs) are highly subject to short and long-term attenuation due to the unstable network topology and frequent body blockage. This instability makes it challenging to achieve reliable and energy-efficient communication, but on the other hand, provides a great potential for the sending nodes to dynamically schedule the transmissions at the time with the best-expected channel quality. Motivated by this, we propose IGE (Improved Gilbert-Elliott Markov chain model), a memory-efficient Markov chain model to monitor channel fluctuations and provide a long-term channel prediction. We then design ATPS (Adaptive Transmission Power Selection), a deadline-constrained channel scheduling scheme that enables a sending node to buffer the packets when the channel is bad and schedule them to be transmitted when the channel is expected to be good within a deadline. ATPS can self-learn the pattern of channel changes without imposing a significant computation or memory overhead on the sending node. We evaluate the performance of ATPS through experiments using TelosB motes under different scenarios with different body postures and packet rates. We further compare ATPS with several state-of-the-art schemes including the optimal scheduling policy in which the optimal transmission time for each packet is calculated based on the collected RSSI (Received Signal Strength Indicator) samples in an off-line manner. The experimental results reveal that ATPS performs almost as efficiently as the optimal scheme in high-date-rate scenarios and has a similar trend on power level usage.

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Multicenter evaluation of signal enhancement algorithms for hearing aids

Luts

Eneman

Wouters

et al. 2010

The Journal of the Acoustical Society of America

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127

124

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In the framework of the European HearCom project, promising signal enhancement algorithms were developed and evaluated for future use in hearing instruments. To assess the algorithms' performance, five of the algorithms were selected and implemented on a common real-time hardware/software platform. Four test centers in Belgium, The Netherlands, Germany, and Switzerland perceptually evaluated the algorithms. Listening tests were performed with large numbers of normal-hearing and hearing-impaired subjects. Three perceptual measures were used: speech reception threshold (SRT), listening effort scaling, and preference rating. Tests were carried out in two types of rooms. Speech was presented in multitalker babble arriving from one or three loudspeakers. In a pseudo-diffuse noise scenario, only one algorithm, the spatially preprocessed speech-distortion-weighted multi-channel Wiener filtering, provided a SRT improvement relative to the unprocessed condition. Despite the general lack of improvement in SRT, some algorithms were preferred over the unprocessed condition at all tested signal-to-noise ratios (SNRs). These effects were found across different subject groups and test sites. The listening effort scores were less consistent over test sites. For the algorithms that did not affect speech intelligibility, a reduction in listening effort was observed at 0 dB SNR.

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The Personal Hearing System—A Software Hearing Aid for a Personal Communication System

Cited by 4 publications

References 8 publications

Binaural Noise Cue Preservation in a Binaural Noise Reduction System With a Remote Microphone Signal

Binaural Noise Cue Preservation in a Binaural Noise Reduction System With a Remote Microphone Signal

Power-Adaptive Communication With Channel-Aware Transmission Scheduling in WBANs

Multicenter evaluation of signal enhancement algorithms for hearing aids

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