A measurement technique to determine the transfer characteristics of hands-free telephones. - Hans-Wilhelm Gierlich (Signal Process., 1992)

Binaural analysis methods and their relationship to quality evaluation of hands-free telecommunication equipment. - Hans-Wilhelm Gierlich (EUSIPCO, 1996)

The auditory perceived quality of hands-free telephones: Auditory judgements, instrumental measurements and their relationship. - Hans-Wilhelm Gierlich (Speech Commun., 1996)

Speech quality evaluation of hands-free telephones during double talk: New evaluation methodologies. - Hans-Wilhelm Gierlich; Frank Kettler; E. Diedrich (EUSIPCO, 1998)

Auditory virtual environments: basics and applications for interactive simulations. - Winfried Krebber; Hans-Wilhelm Gierlich; Klaus Genuit (Signal Process., 2000)

Advanced speech quality testing of modern telecommunication equipment: An overview. - Hans-Wilhelm Gierlich; Frank Kettler (Signal Process., 2006)

A new objective model for wide- and narrowband speech quality prediction in communications including background noise. - Hans-Wilhelm Gierlich; Frank Kettler; Silvia Poschen; Jan Reimes (EUSIPCO, 2008)

Adaption of a Prediction Model for Noisy Speech Quality Assessment. - Jan Reimes; Hans-Wilhelm Gierlich; G. Mauer (IWAENC, 2012)

Car Hands-Free Testing and Optimization: An Overview. - Hans-Wilhelm Gierlich (Smart Mobile In-Vehicle Systems, 2014)

Advances in Perceptual Modeling of Speech Quality in Telecommunications. - Hans-Wilhelm Gierlich; Ulrich Heute; Sebastian Möller 001 (ITG Symposium on Speech Communication, 2014)

Instrumental speech and noise quality assessment for super-wideband and fullband transmission. - Jan Reimes; Hans-Wilhelm Gierlich (ITG Symposium on Speech Communication, 2016)