WorldCat Identities

Kollmeier, B. (Birger) 1958-

Overview
Works: 79 works in 123 publications in 2 languages and 1,038 library holdings
Genres: Conference papers and proceedings 
Roles: Author, dgs, Editor, Other, 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 by B Kollmeier( Book )

10 editions published between 1996 and 2014 in English and held by 90 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, and audio signal processing"--Publisher's description
Hearing, from sensory processing to perception by B Kollmeier( Book )

12 editions published in 2007 in English and held by 73 WorldCat member libraries worldwide

Hearing a" From Sensory Processing to Perception presents the papers of the latest a oeInternational Symposium on Hearinga, 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 hearing and the physiological mechanisms of binaural processing in mammals; integration of the different stimulus features into auditory scene analysis; physiological mechanisms related to the formation of auditory objects; speech perception; and limitations of auditory perception resulting from hearing disorders
Psychophysics, physiology and models of hearing by Torsten Dau( Book )

5 editions published in 1999 in English and held by 55 WorldCat member libraries worldwide

THE PERCEPTION OF PREPHONEMATIC ACOUSTIC SIGNALSALTERS WITH AGE
Entwicklung zeitoptimierter psychoakustischer Messverfahren und ihre Anwendung auf binaurale Zeiteffekte by B Kollmeier( )

3 editions published in 1986 in German and held by 34 WorldCat member libraries worldwide

Versorgung und Rehabilitation mit Hörgeräten by Jürgen Kießling( Book )

4 editions published between 1996 and 2008 in German and held by 30 WorldCat member libraries worldwide

Robust automatic speech recognition and modeling of auditory discrimination experiments with auditory spectro-temporal features by Marc René Schädler( )

2 editions published in 2016 in English and held by 27 WorldCat member libraries worldwide

Automatic speech recognition (ASR) systems still do not perform as well as human listeners under realistic conditions. The unmatched ability of humans to understand speech in most difficult acoustic conditions originates from the superior properties of their auditory system. The aim of this thesis is to improve the recognition performance of ASR systems in difficult acoustic conditions by carefully integrating auditory signal processing strategies. To this end, the physiologically inspired extraction of spectro-temporal modulation patterns was successfully integrated into the front-end of a standard ASR system. Further, the joint spectro-temporal processing could be separated into independent temporal and spectral processes. To investigate the reason for the remaining "man-machine-gap" in recognition performance, a range of critical auditory discrimination tasks were performed using ASR systems. The comparison with empirical data showed that the separate spectro-temporal modulation front-end provides a suitable auditory model and revealed the importance of across-frequency processing in speech recognition. <engl.>
Moderne Verfahren der Sprachaudiometrie( Book )

1 edition published in 1992 in German and held by 23 WorldCat member libraries worldwide

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

4 editions published in 1990 in German and Undetermined and held by 16 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 16 WorldCat member libraries worldwide

Performance of current models of speech recognition and resulting challenges Volker Hohmann by Wiebke Schubotz( )

2 editions published between 2015 and 2016 in German and English and held by 15 WorldCat member libraries worldwide

Sprache wird oft durch Störgeräusche (Maskierer) verdeckt, die das Verstehen eines Zielsprechers erheblich behindern können. Aber es gibt Mechanismen, die Sprachverstehen in schwierigen Hörsituationen ermöglichen. Einige davon, z.B. die frequenzübergreifende Kombination von Information oder binaurale Merkmale, werden in dieser Dissertation untersucht. Außerdem werden Maskiereigenschaften wie energetische Maskierung, Amplitudenmodulationsmaskierung und "informational masking" diskutiert. Sprachverständlichkeit wird in komplexen Maskierern untersucht, die systematisch ihre spektro-temporalen Merkmale ändern und dabei die verschiedenen Aspekte ansprechen. Gemessene Sprachverständlichkeitsschwellen werden mit den Vorhersagen verschiedener Sprachverständlichkeitsmodelle verglichen. Da jedes Modell eine andere Analysestrategie der dargebotenen Signale hat, kann beurteilt werden, wie gut die einzelnen Modelle die gemessene Sprachverständlichkeit vorhersagen. Diese Dissertation benennt die Grenzen aktueller Modelle und bietet so eine "benchmark" für die Weiterentwicklung von Sprachverständlichkeitsmodellen. <dt.>
Speech recognition tested at fixed, positive signal-to-noise ratios using time compression: methods and applications by Anne Schlüter( )

2 editions published in 2016 in English and held by 10 WorldCat member libraries worldwide

In daily communication the signal-to-noise ratio (SNR) of speech and background noise is usually positive. To evaluate the performance of hearing aids in such situations, a speech-in-noise test was introduced that presents time-compressed speech at fixed positive SNRs. Based on the Oldenburg sentence test, speech recognition thresholds were determined as a function of SNR and of the speech rate. A uniform and a non-uniform time compression algorithm were tested. Subjective and objective analysis indicated advantages of the uniform algorithm. Learning effects of the time-compressed and the original speech test were compared. A test procedure using adaptive speech rate was optimized for effective recognition measurements. Evaluating two single-microphone noise reduction algorithms showed the potential of the method for discriminating across these hearing aid algorithms at positive SNRs. The method can extend tests of speech in noise and of hearing aid benefit to a range of positive SNRs. <engl.>
Erprobung und Validisierung von sprachaudiometrischen und anderen computergesteuerten Meßverfahren für die klinische Audiometrie : Abschlußbericht zum BMBF-Verbundprojekt( )

2 editions published in 1997 in German and held by 7 WorldCat member libraries worldwide

Die Diagnostik von Hörstörungen und die Rehabilitation mit technischen Hörhilfen steht aufgrund der rasanten technischen Entwicklung in einem Umbruch, da die klassischen Meßverfahren den heutigen Standards nicht mehr genügen
"Fortschritte der Akustik" DAGA 2014, 40. Jahrestagung für Akustik, 10.-13. März 2014 Oldenburg( )

1 edition published in 2014 in German and held by 5 WorldCat member libraries worldwide

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.>
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.>
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.>
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.>
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: 0.76 (from 0.49 for Hearing, f ... to 0.95 for Speech rec ...)

Psychoacoustics, speech, and hearing aids : Bad Zwischenahn, 31 Aug-5 Sep 1995
Alternative Names
Birger Kollmeier deutscher Hörforscher

Birger Kollmeier Duits natuurkundige

Birger Kollmeier físico alemán

Birger Kollmeier German physicist

Kollmeier, B.

Kollmeier, B. 1958-

Kollmeier, Birger 1958-

Languages
English (41)

German (19)

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