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Precise Perceptibility of the Original Loudness of a Speaker through Electro-Acoustic Playback

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Experiments were undertaken in which the test persons compared the playback loudness of electrically reproduced signals with the original loudness. For this purpose speech recordings were made in different rooms. Sometimes the speaker was known to the research workers, at other times he was unknown. The work showed that the original loudness in an approximately 2 dB range level is reproduced the mean value for an unknown speaker being a little less than the original loudness. Moreover with the help of a spectrum level analyser the spectral differences of various loud speakers may be determined.
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Document Type: Research Article

Publication date: February 1, 1977

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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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