Spatial Separation Benefit for Speech Detection in Multi-Talker Babble-Noise with Different Egocentric Distances
Experiments performed in free field showed that a task of speech stimuli detection is solved more successfully when a speech signal and a speech-like noise source are spatially separated in distance. The spatial separation of the sources of the target speech signal and the speech-like masker improved detection of the target speech signal in noise at a low signal-to-noise ratio of –14 dB. This indicated the release from masking when the sources of the target signal and the masker were separated by a distance of 3m, the value of which amounted to 2–3 dB. Release from masking at equal ratios of the intensity level of the target signal and the masker did not depend on which source was closer to the listener. This result provides a possibility of adjusting the auditory system to a specified azimuth angle, at which the sound wave arrives at the ears of the person.
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Document Type: Research Article
Publication date: May 1, 2019
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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