AES Los Angeles 2016
Paper Session P23
P23 - Signal Processing—Part 4
Sunday, October 2, 9:00 am — 10:30 am (Rm 409B)
Chair:
Dave Berners, Universal Audio; CCRMA, Stanford University - Stanford, CA, USA
P23-1 Physically Derived Synthesis Model of an Aeolian Tone—Rod Selfridge, Queen Mary University of London - London, UK; Joshua D. Reiss, Queen Mary University of London - London, UK; Eldad J. Avital, Queen Mary University of London - London, UK; Xiaolong Tang, Queen Mary University of London - London, UK
An Aeolian tone is the whistle-like sound that is generated when air moves past a cylinder or similar object; it is one of the primary aeroacoustic sound sources. A synthesis model of an Aeolian tone has been developed based on empirical formula derived from fundamental fluid dynamics equations. It avoids time consuming computations and allows real-time operation and interaction. Evaluation of the synthesis model shows frequencies produced are close to those measured in a wind tunnel or simulated through traditional offline computations.
Convention Paper 9679 (Purchase now)
P23-2 Binaural Auditory Steering Strategy: A Cupped Ear Study for Hearing Aid Design—Changxue Ma, GN Resound - Glenview, IL, USA; Andrew B. Dittberner, GN Resound - Glenview, IL, USA; Rob de Vries, GN Resound - Eindhoven, The Netherlands
The binaural auditory steering strategy for hearing aids focuses to achieve a better hearing experience in terms of both “better ear” listening and situational awareness. We have taken into account the binaural auditory spatial processing strategy to optimize the acoustic beamforming filters. We investigate in this paper how human beings achieve better listening with cupped ears based on the head-related transfer function (HRTF) of the subjects with both open ears and cupped ears. We define the metrics better ear index and situational awareness index. We show that cupped ears can significantly improve the better ear index and the open ears has better situational awareness. We can automatically choose one hearing aid with directivity similar to a cupped ear and another hearing aid similar to an open ear to achieve both better intelligibility and situational awareness in certain acoustic environments.
Convention Paper 9680 (Purchase now)
P23-3 On the Effect of Artificial Distortions on Objective Performance Measures for Dialog Enhancement—Matteo Torcoli, Fraunhofer Institute for Integrated Circuits IIS - Erlangen, Germany; Christian Uhle, Fraunhofer Institute for Integrated Circuits IIS - Erlangen, Germany
The objective evaluation of dialog enhancement systems using computational methods is desired to complement the subjective evaluation using listening tests. It remains a challenge because for this application neither were performance measures specifically designed, nor were existing measures systematically analyzed. This work investigates eight objective performance measurement tools originally developed for audio and speech coding, speech enhancement, or source separation. To this end, a set of basic distortions is presented and used to simulate degradations that are common in dialog enhancement. The effect of the artificial distortions on the performance measures is quantified by means of a so-called response score that is proposed here.
Convention Paper 9681 (Purchase now)