WorldCat Identities

Kollmeier, B. (Birger) 1958-

Overview
Works: 68 works in 106 publications in 2 languages and 901 library holdings
Genres: Conference proceedings 
Roles: Author, Other, Editor, Creator, Censor, Contributor
Classifications: QP460, 612.85
Publication Timeline
.
Most widely held works by B Kollmeier
Psychoacoustics, speech, and hearing aids : Bad Zwischenahn, 31 Aug-5 Sep 1995( Book )

7 editions published in 1996 in English and held by 84 WorldCat member libraries worldwide

Hearing, from sensory processing to perception by B Kollmeier( Book )

13 editions published in 2007 in English and held by 72 WorldCat member libraries worldwide

Hearing??? From Sensory Processing to Perception presents the papers of the latest???International Symposium on Hearing???, a meeting held every three years focusing on psychoacoustics and the research of the physiological mechanisms underlying auditory perception. The proceedings provide an up-to-date report on the status of the field of research into hearing and auditory functions. The 59 chapters treat topics such as: the physiological representation of temporal and spectral stimulus properties as a basis for the perception of modulation patterns, pitch and signal intensity; spatial heari
Psychophysics, physiology and models of hearing by Torsten Dau( Book )

6 editions published in 1999 in English and held by 50 WorldCat member libraries worldwide

AMPLITUDE MODULATION PROCESSING IN THE AUDITORY SYSTEM: INVESTIGATIONS USING ENVELOPE FOLLOWING RESPONSES1 Introduction; 2 Methods; 3 Results; 4 Discussion; References; ON THE RELATIONSHIP BETWEEN AUDITORY EVOKED POTENTIALS AND PSYCHOPHYSICAL LOUDNESS; 1 Introduction; 2 Method; 2.1 Experiment 1; 2.2 Experiment 2; 2.3 Experiment 3; 3 Summary and discussion; References; ALTERNATIVE DEFINITIONS OF THE MISMATCH NEGATIVITY; 1 Definitions; 2 Methods; 3 Results; 4 Conclusions; References; II. Psychological Acoustics: Perceptual Processing of Complex Sounds
Versorgung und Rehabilitation mit Hörgeräten by Jürgen Kiessling( Book )

4 editions published between 1997 and 2008 in German and held by 41 WorldCat member libraries worldwide

Entwicklung zeitoptimierter psychoakustischer Messverfahren und ihre Anwendung auf binaurale Zeiteffekte by B Kollmeier( Book )

3 editions published in 1986 in German and Undetermined and held by 29 WorldCat member libraries worldwide

Moderne Verfahren der Sprachaudiometrie( Book )

1 edition published in 1992 in German and held by 20 WorldCat member libraries worldwide

Hörflächenskalierung : Grundlagen und Anwendung der kategorialen Lautheitsskalierung für Hördiagnostik und Hörgeräte-Versorgung( Book )

1 edition published in 1997 in German and held by 14 WorldCat member libraries worldwide

Meßmethodik, Modellierung und Verbesserung der Verständlichkeit von Sprache by B Kollmeier( Book )

3 editions published in 1990 in German and Undetermined and held by 13 WorldCat member libraries worldwide

Speech perception age, and hearing loss methods to assess the balance between bottom-up and top-down processing by Verena-Nicole Uslar( Book )

1 edition published in 2014 in English and held by 3 WorldCat member libraries worldwide

Binaural spectral selectivity in normal-hearing and hearing-impaired listeners by Marc Nitschmann( )

2 editions published in 2010 in English and held by 2 WorldCat member libraries worldwide

A microscopic model of speech recognition for listeners with normal and impaired hearing by Tim Jürgens( )

2 editions published in 2010 in English and held by 2 WorldCat member libraries worldwide

This dissertation presents a microscopic model of human speech recognition (HSR), microscopic in a sense that first, the recognition of single phonemes rather than the recognition of whole sentences is modeled. Second, the particular spectro-temporal structure of speech is processed by an auditory model. This contrasts with other models of HSR, which usually use the spectral structure only. The model is capable of predicting phoneme recognition in normal-hearing (NH) listeners in noise along with important aspects of consonant recognition in quiet. Furthermore, this model is extended for the prediction of sentence recognition. The extension is capable of predicting speech recognition of NH and hearing-impaired (HI) listeners as accurately as a standard speech intelligibility model. Parameters reflecting the supra-threshold auditory processing are assessed in NH and HI listeners using psychoacoustical techniques such as forward masking and categorical loudness scaling. These supra-threshold auditory processing deficits are included in the model and the results show that implementing supra-threshold processing improves prediction accuracy. <engl.>
Human and automatic speech recognition in the presence of speech-intrinsic variations by Bernd T Meyer( )

2 editions published in 2009 in English and held by 2 WorldCat member libraries worldwide

Ziel der vorliegenden Dissertation ist die Analyse und Verbesserung automatischer Spracherkennung (ASR). Da das menschliche auditorische System heutigen ASR-System weit überlegen ist, wurde zunächst die Erkennungsleistung von Mensch und Maschine verglichen. Aus den spezifischen Unterschieden wurden Rückschlüsse auf Signalverarbeitungsmechanismen gezogen, die zu einer Verbesserung von ASR führen. Beim Vergleich wurde insbesondere der Einfluss intrinsischer Variabilität (Änderungen der Sprachrate, des Sprachaufwands und -stils, sowie Dialekt und Akzent) evaluiert. Die Ergebnisse belegen, dass die Verarbeitung zeitlicher Merkmale in ASR Optimierungspotential birgt. Daher wurden spektro-temporale Merkmale für ASR eingesetzt, mit denen bei verändertem Sprachaufwand und variierender Sprechweise eine Verbesserung gegenüber Standardmerkmalen erzielt wurde; dies belegt die Nützlichkeit spektro-temporaler und temporaler Information für automatische Erkenner. <dt.>
Fine structure in distortion product otoacoustic emissions and auditory perception by Manfred Dieter Mauermann( )

1 edition published in 2004 in English and held by 2 WorldCat member libraries worldwide

Otoakustische Emissionen (OAE) sind Schallaussendungen des gesunden Ohres, die sich im Gehörgang messen lassen. Die Messung von OAE ist zwar als Hörscreening etabliert, eine präzise individuelle Vorhersage des Hörvermögens mit OAE ist bisher aber nicht möglich. Ziel der vorliegenden Arbeit ist es daher die Interpretierbarkeit und damit die diagnostische Anwendbarkeit von otoakustischen Verzerrungsprodukten (DPOAE) zu verbessern. In Kap. 2 + 3 wird in Experimenten und Modellierung zu Eigenschaften der DPOAE-Feinstruktur in Normal- und Schwerhörenden gezeigt, dass DPOAE von zwei Quellen im Innenohr herrühren. Wie in Kap. 4 gezeigt wird hat diese zweite Quelle insbesondere bei kleinen Anregungspegeln einen großen Einfluss auf die im Gehörgang gemessenen DPOAE. Ferner wird gezeigt, dass eine Abtrennung der zweiten DPOAE-Komponente durch "Latenzfensterung" die Variabilität in DPOAE-Wachstumsfunktionen und daraus abgeleiteten Schätzungen der Hörschwelle drastisch reduziert. In Kap. 5 wird die psychoakustische Seite des Problems angegangen. Es zeigt sich, das die Hörschwelle sowie die Lautheitswahrnehmung von Sinustönen Pegelschwankungen zwischen eng benachbarten Frequenzen von bis zu 15 dB aufweisen. Außer für den Vergleich von Hörschwellen und DPOAE sind diese Ergebnisse auch für das grundlegende Verständnis der schwellenahen Lautheitswahrnehmung von Bedeutung. <dt.>
An effective binaural processing model based on interaural phase differences by Mathias Dietz( )

2 editions published in 2009 in English and held by 2 WorldCat member libraries worldwide

Humans have the ability to blindly localize sound sources. In a babble of concurrent talkers they can focus on one specific talker and understand his or her speech. One important reason for this is the ability of the human auditory system to estimate interaural differences by comparing signals from the left and the right ear. Differences between the ears exist in either timing or level. The standard model for time difference detection from Jeffress (1948) is based on an internal cross-correlator with two counterdirective chains of delay elements. In contrast recent neurophysiologic but also psychoacoustic studies indicate that chains of delay elements do not exist in mammals. In this thesis an effective binaural processing model is presented which is based on instantaneous phase comparison instead of delay compensation. An effective model is a chain of signal processing elements, with the philosophy not to model a specific neural realization but rather to quantify the transmitted information. <engl.>
Auditory spectro-temporal processing in the envelope frequency domain experiments and models by Stephan Ewert( )

1 edition published in 2002 in English and held by 2 WorldCat member libraries worldwide

This thesis investigates the processing of the envelope of sounds in the human auditory system. Psychoacoustic methods are used to examine the i) envelope-frequency selectivity, ii) coding of amplitude-modulation depth, and the iii) analysis of complex modulations. A functional model of hearing is proposed that successfully accounts for the empirical data. Chapter 1 derives the bandwidth and the shape of auditory modulation filters in terms of a critical-band concept in the envelope-frequency domain. Chapter 2 addresses the role of internal and external limitations in amplitude-modulation detection and discrimination. In Chapter 3, the role of beats between modulations (venelope fluctuations) in modulation-masking experiments is examined. Chapter 4 further investigates the processes underlying the extraction of the venelope in the normal-hearing and sensorineural hearing-impaired auditory system. Chapter 5 shows that the frequency selectivity in the envelope-frequency domain reflects a 'true' limited-resolution spectral decomposition, and not a selective process tuned to different repetition rates of the envelope. <engl.>
Objective audiological diagnostics using novel acoustical and electrophysiological tests by Matthias Müller-Wehlau( )

2 editions published in 2011 in English and held by 1 WorldCat member library worldwide

In this thesis different acoustical and electrophysiological approaches for the objective audiological diagnostic are investigated. The utilized methods involve higher stages of the audiometric pathway and therefore allow the assessment of the state of hearing up to neural levels. It was shown that a different method to measure the acoustic reflex elicitation in conjunction with a new robust detection algorithm allows a significantly reduced stimulus level and higher detection rates compared to the established method. The same method was used to correlate reflex thresholds with the loss of cochlear compression that results from sensorineural hearing loss thus offering an objective method to estimate the broadband hearing threshold. Yet another method connects objective measurements of amplitude modulation following responses (AMFR) with differences in modulation depths perception due to cochlear damage. <engl.>
Modelling binaural speech intelligibility in spatial noise and reverberation for normal-hearing and hearing-impaired subjects by Rainer Beutelmann( )

2 editions published in 2009 in English and held by 1 WorldCat member library worldwide

Sprachverständlichkeit in komplexen Situationen, das sogenannte "Cocktail-Party-Problem", wird stark von der Fähigkeit des Hörers beeinflusst, beide Ohren benutzen zu können. Diese Dissertation stellt die Entwicklung eines Modells der binauralen Sprachverständlichkeit und seine Überprüfung für ausgewählte binaurale Situationen vor. Das Modell wurde für die Vorhersage von binauraler Sprachverständlichkeit in fluktuierendem Rauschen erweitert, und die Gültigkeit der Annahme, dass die binaurale Verarbeitung in verschiedenen Bändern unabhängig voneinander ist, wurde überprüft. Insgesamt ist das Modell in der Lage, binaurale Sprachverständlichkeitsschwellen in Situationen mit einer stationären, sprachsimulierenden Störquelle an verschiedenen Azimutwinkeln in der Horizontalebene und unter verschiedenen raumakustischen Bedingungen vorherzusagen. Die Vorhersage binauraler Sprachverständlichkeit in fluktuierendem Rauschen ist weniger genau, aber als Machbarkeitsstudie angemessen. <dt.>
Psychoacoustics, Speech and Hearing Aids Bad Zwischenahn, Germany, 31 August-5 September, 1995 by B Kollmeier( )

1 edition published in 1996 in English and held by 0 WorldCat member libraries worldwide

Recent advances in psychoacoustics and speech research have an important impact on our understanding of hearing impairment and the concepts of compensating hearing problems with modern hearing instruments. This proceedings of the summer school and symposium give an introduction into the latest developments in this interdisciplinary area. Tutorials of leading international scientists as well as more focused contributions of active researchers provide an excellent overview and a documentation of the "state of the art". The book is of interest for everybody involved in hearing research, audiology
Development and objective perceptual quality assessment of monaural and binaural noise reduction schemes for hearing aids by Thomas Rohdenburg( )

1 edition published in 2008 in English and held by 0 WorldCat member libraries worldwide

People with hearing impairment have great difficulties communicating in noisy and reverberant environments. They usually require a higher signal-to-noise ratio (SNR) to achieve the same listening performance as normal hearing people. The current dissertation addresses this difficulty with the development of novel binaural noise reduction schemes for hearing aids and their evaluation under realistic conditions. Particular consideration is given to influences of head shadow and diffraction, head movements, microphone properties, and the preservation of binaural information. The algorithms are evaluated using novel objective measures based on recent knowledge of the auditory system and by subjective listening tests. From the results it is expected that both, the algorithms and objective assessment methods, will prove to be beneficial for human communication in noise in the future. <engl.>
 
moreShow More Titles
fewerShow Fewer Titles
Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.73 (from 0.50 for Hearing, f ... to 0.96 for Objective ...)

WorldCat IdentitiesRelated Identities
Alternative Names
Birger Kollmeier deutscher Hörforscher

Kollmeier, B.

Kollmeier, B. 1958-

Kollmeier, Birger 1958-

Languages
English (43)

German (12)

Covers
Hearing, from sensory processing to perceptionPsychophysics, physiology and models of hearingVersorgung und Rehabilitation mit Hörgeräten