Solving the cocktail party problem for bilateral cochlear implant users

2020 ◽  
Vol 148 (4) ◽  
pp. 2536-2536
Author(s):  
Christopher A. Brown
Keyword(s):  
Cochlear Implant ◽  
Cocktail Party ◽  
Cocktail Party Problem ◽  
Bilateral Cochlear Implant

scholarly journals Speech recognition by bilateral cochlear implant users in a cocktail-party setting

2009 ◽  
Vol 125 (1) ◽  
pp. 372-383 ◽  
Author(s):  
Philipos C. Loizou ◽  
Yi Hu ◽  
Ruth Litovsky ◽  
Gongqiang Yu ◽  
Robert Peters ◽  
...  
Keyword(s):  
Speech Recognition ◽  
Cochlear Implant ◽  
Cocktail Party ◽  
Bilateral Cochlear Implant

scholarly journals Acute alcohol intoxication and the cocktail party problem: do “mocktails” help or hinder?

2021 ◽  
Author(s):  
Alistair J. Harvey ◽  
C. Philip Beaman
Keyword(s):  
Working Memory ◽  
Memory Span ◽  
Alcohol Intoxication ◽  
Alcoholic Beverage ◽  
Cognitive Capacity ◽  
Cocktail Party ◽  
Primary Input ◽  
Cocktail Party Problem ◽  
Null Effect ◽  
Cocktail Party Effect

Abstract Rationale To test the notion that alcohol impairs auditory attentional control by reducing the listener’s cognitive capacity. Objectives We examined the effect of alcohol consumption and working memory span on dichotic speech shadowing and the cocktail party effect—the ability to focus on one of many simultaneous speakers yet still detect mention of one’s name amidst the background speech. Alcohol was expected either to increase name detection, by weakening the inhibition of irrelevant speech, or reduce name detection, by restricting auditory attention on to the primary input channel. Low-span participants were expected to show larger drug impairments than high-span counterparts. Methods On completion of the working memory span task, participants (n = 81) were randomly assigned to an alcohol or placebo beverage treatment. After alcohol absorption, they shadowed speech presented to one ear while ignoring the synchronised speech of a different speaker presented to the other. Each participant’s first name was covertly embedded in to-be-ignored speech. Results The “cocktail party effect” was not affected by alcohol or working memory span, though low-span participants made more shadowing errors and recalled fewer words from the primary channel than high-span counterparts. Bayes factors support a null effect of alcohol on the cocktail party phenomenon, on shadowing errors and on memory for either shadowed or ignored speech. Conclusion Findings suggest that an alcoholic beverage producing a moderate level of intoxication (M BAC ≈ 0.08%) neither enhances nor impairs the cocktail party effect.

Cocktail Party Problem

2010 ◽  
pp. 61-79 ◽  
Author(s):  
Tariqullah Jan ◽  
Wenwu Wang
Keyword(s):  
Sparse Coding ◽  
Source Separation ◽  
Auditory Scene Analysis ◽  
Future Research ◽  
Cocktail Party ◽  
Analysis Model ◽  
Computational Auditory Scene Analysis ◽  
Cocktail Party Problem ◽  
Auditory Scene ◽  
Future Research Directions

Cocktail party problem is a classical scientific problem that has been studied for decades. Humans have remarkable skills in segregating target speech from a complex auditory mixture obtained in a cocktail party environment. Computational modeling for such a mechanism is however extremely challenging. This chapter presents an overview of several recent techniques for the source separation issues associated with this problem, including independent component analysis/blind source separation, computational auditory scene analysis, model-based approaches, non-negative matrix factorization and sparse coding. As an example, a multistage approach for source separation is included. The application areas of cocktail party processing are explored. Potential future research directions are also discussed.

scholarly journals Improving Localization and Speech Reception in Noise for Bilateral Cochlear Implant Recipients

2019 ◽  
Vol 23 ◽  
pp. 233121651983149 ◽  
Author(s):  
Wendy B. Potts ◽  
Lakshmish Ramanna ◽  
Trevor Perry ◽  
Christopher J. Long
Keyword(s):  
Cochlear Implant ◽  
Automatic Gain Control ◽  
Gain Control ◽  
Interaural Level Difference ◽  
Mean Square ◽  
Localization Accuracy ◽  
Speech In Noise ◽  
Speech Reception ◽  
Bilateral Cochlear Implant ◽  
Comparative Survey

This study looked at different methods to preserve interaural level difference (ILD) cues for bilateral cochlear implant (BiCI) recipients. One possible distortion to ILD is from automatic gain control (AGC). Localization accuracy of BiCI recipients using default versus increased AGC threshold and linked AGCs versus independent AGCs was examined. In addition, speech reception in noise was assessed using linked versus independent AGCs and enabling and disabling Autosensitivity™ Control. Subjective information via a diary and questionnaire was also collected about maps with linked and independent AGCs during a take-home experience. Localization accuracy improved in the increased AGC threshold and the linked AGCs conditions. Increasing the AGC threshold resulted in a 4° improvement in root mean square error averaged across all speaker locations. Using linked AGCs, BiCI participants experienced an 8° improvement for all speaker locations and a 19° improvement at the speaker location most affected by the AGC. Speech reception threshold in noise improved by an average of 2.5 dB when using linked AGCs versus independent AGCs. In addition, the effect of linked AGCs on speech in noise was compared with that of Autosensitivity™ Control. The Speech, Spatial, and Qualities of Hearing Scale-12 question comparative survey showed an improvement when using maps with linked AGCs. These findings support the hypothesis that ILD cues may be preserved by increasing the AGC threshold or linking AGCs.

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