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Langendijk, E.H.A. (author), Kistler, D.J. (author), Wightman, F.L. (author), TNO Technische Menskunde (author)
Localizing a target sound can be a challenge when one or more distracter sounds are present at the same time. This study measured the effect of distracter position on target localization for one distracter (17 positions) and two distracters (21 combinations of 17 positions). Listeners were instructed to point to the apparent position of a train...
article 2001
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Nederveen, C.J. (author), Centraal laboratorium TNO (author)
article 1964
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van der Toorn, J.D. (author), Technisch Physische Dienst TNO - TH (author)
article 1982
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Hornikx, M. (author), Forssén, J. (author), Botteldooren, D. (author), van Renterghem, T. (author), Wei, W. (author), Ögren, M. (author), Salomons, E. (author)
Mapping of road traffic noise in urban areas according to standardized engineering calculation methods systematically results in an underestimation of noise levels at areas shielded from direct exposure to noise, such as inner yards. In most engineering methods, road traffic lanes are represented by point sources and noise levels are computed...
article 2014
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Dittrich, M.G. (author)
De overheid wil negatieve effecten van verkeersgeluid in Nederland aanpakken vanuit een brede visie gericht op de periode tot 2050. Daarvoor is inzicht nodig in de effecten van ontwikkelingen in die periode in beleid, mobiliteit en technologie. TNO heeft een verkennende studie uitgevoerd en daarna een beleidsindicator ontwikkeld waarmee deze...
article 2016
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van Schijndel, N.H. (author), Bensa, J. (author), Christensen, M.G. (author), Colomes, C. (author), Edler, B. (author), Heusdens, R. (author), Jensen, J. (author), Jensen, S.H. (author), Kleijn, W.B. (author), Kot, V. (author), Kövesi, B. (author), Lindblom, J. (author), Massaloux, D. (author), Niamut, O.A. (author), Nordén, F. (author), Plasberg, J.H. (author), Vafin, R. (author), Virette, D. (author), Wübbolt, O. (author), TNO Informatie- en Communicatietechnologie (author)
Traditionally, sound codecs have been developed with a particular application in mind, their performance being optimized for specific types of input signals, such as speech or audio (music), and application constraints, such as low bit rate, high quality, or low delay. There is, however, an increasing need for more generic sound codecs, created...
article 2008
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Zekveld, A.A. (author), Kramer, S.E. (author), Kessens, J.M. (author), Vlaming, M.S.M.G. (author), Houtgast, T. (author), TNO Defensie en Veiligheid (author)
Objective: The aim of the current study was to examine whether partly incorrect subtitles that are automatically generated by an Automatic Speech Recognition (ASR) system, improve speech comprehension by listeners with hearing impairment. In an earlier study (Zekveld et al. 2008), we showed that speech comprehension in noise by young listeners...
article 2009
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Wunderli, J.M. (author), Salomons, E.M. (author), TNO Bouw en Ondergrond (author)
A model is presented to predict the reflection of sound at forest edges. A single tree is modelled as a vertical cylinder. For the reflection at a cylinder an analytical solution is given based on the theory of scattering of spherical waves. The entire forest is represented by a line of cylinders placed along the forest edge. The spacing between...
article 2009
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Bronkhorst, A.W. (author), Plomp, R. (author), Instituut voor Zintuigfysiologie TNO (author)
The effect of head-induced interaural time delay (ITD) and interaural level differences (ILD) on binaural speech intelligibility in noise was studied for listeners with symmetrical and asymmetrical sensorineural hearing losses. The material, recorded with a KEMAR manikin in an anechoic room, consisted of speech, presented from the front (0°),...
article 1989
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Vos, J. (author), TNO Technische Menskunde (author)
In a previous study on the annoyance caused by a great variety of shooting sounds [J. Acoust. Soc. Am. 109, 244-253 (2001)], it was shown that the annoyance, as rated indoors with the windows closed, could be adequately predicted from the outdoor A-weighted and C-weighted sound-exposure levels [ASEL (L(AE)) and CSEL (L(CE))] of the impulse...
article 2003
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Borst, H.C. (author), Miedema, H.M.E. (author), TNO Bouw en Ondergrond (author)
In this paper, the following four indicators describing noise annoyance in a community are considered: the percentage of people being highly annoyed (pHA), annoyed (pA), (at least) little annoyed (p LA), and the mean of the expected individual annoyance scores (m EA) in the population concerned. These indicators are calculated for a study...
article 2005
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Kooijman, G. (author), Hirschberg, A. (author), Golliard, J. (author), TNO Industrie en Techniek (author)
The effect of mean grazing flow on the acoustical response of a single rectangular slot in a wall to imposed sound is investigated experimentally. For this purpose an accurate multi-microphone impedance tube set-up is employed. In particular the influence of the mean grazing flow characteristics as well as the orifice's (edge) geometry is...
article 2008
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Steeneken, H.J.M. (author), Houtgast, T. (author), Instituut voor Zintuigfysiologie TNO (author)
article 1980
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Miedema, H.M.E. (author), Vos, H. (author), Instituut voor Ruimtelijke Organisatie TNO (author)
Relationships between exposure to noise [metric: day-evening-night levels (DENL)] from stationary sources (shunting yards, a seasonal industry, and other industries) and annoyance are presented. Curves are presented for expected annoyance score, the percentage "highly annoyed" (%HA, cutoff at 72 on a scale from 0 to 100), the percentage "annoyed...
article 2004
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Bronkhorst, A.W. (author)
How do we recognize what one person is saying when others are speaking at the same time? This review summarizes widespread research in psychoacoustics, auditory scene analysis, and attention, all dealing with early processing and selection of speech, which has been stimulated by this question. Important effects occurring at the peripheral and...
article 2015
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Miedema, H.M.E. (author), Oudshoorn, C.G.M. (author), TNO Preventie en Gezondheid (author)
We present a model of the distribution of noise annoyance with the mean varying as a function of the noise exposure. Day-night level (DNL) and day-evening-night level (DENL) were used as noise descriptors. Because the entire annoyace distribution has been modeled, any annoyance measure that summarizes this distribution can be calculated from the...
article 2001
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Boer, L.C. (author), Withinton, D.J. (author), TNO Technische Menskunde (author)
As a test on auditory guidance, participants tried to .nd refuge and safety in a road tunnel in dense smoke with sound beacons over the escape exits. The beacons emitted a 'shhussing' noise with a 5-Hz pulse frequency. Three groups participated, 32 or 33 participants per group, the first with minimal instruction (sound not mentioned), the second...
article 2004
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Smoorenburg, G.F. (author), Instituut voor Zintuigfysiologie TNO (author)
article 1972
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Steeneken, H.J.M. (author), Houtgast, T. (author), TNO Technische Menskunde (author)
In an earlier study we derived robust frequency-weighting functions for prediction of the intelligibility of short nonsense words.These frequency-weighting functions are applied for prediction of intelligibility such as with the speech transmission index (STI).Six independent experiments revealed essentially similar frequency-weighting functions...
article 2002
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van Wijngaarden, S.J. (author), Drullman, R. (author), TNO Defensie en Veiligheid (author)
Although the speech transmission index STI is a well-accepted and standardized method for objective prediction of speech intelligibility in a wide range of environments and applications, it is essentially a monaural model. Advantages of binaural hearing in speech intelligibility are disregarded. In specific conditions, this leads to considerable...
article 2008
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