Learn More
In the framework of the European HearCom project, promising signal enhancement algorithms were developed and evaluated for future use in hearing instruments. To assess the algorithms' performance, five of the algorithms were selected and implemented on a common real-time hardware/software platform. Four test centers in Belgium, The Netherlands, Germany, and(More)
Design and implementation of adaptive digital signal processing algorithms for broadband applications') and IWT project AUT/970517: MUSETTE ('Multimicrophone Signal Enhancement Techniques for handsfree telephony and voice controlled systems'). The scientific responsibility is assumed by its authors. Abstract For high quality acoustic echo cancellation long(More)
In the frame of the HearCom1 project five promising signal enhancement algorithms are validated for future use in hearing instrument devices. To assess the algorithm performance solely based on simulation experiments, a number of physical evaluation measures have been proposed that incorporate basic aspects of normal and impaired human hearing.(More)
Dereverberation is required in various speech processing applications such as handsfree telephony and voice-controlled systems, especially when signals are applied that are recorded in a moderately or highly reverberant environment. In this paper, we compare a number of classical and more recently developed multimicrophone dereverberation algorithms, and(More)
In this paper the design and implementation of a truly broad-band beamformer is described. Using only a limited number of microphones a beamformer has been developed with a reasonably homogeneous beampattern over the entire speech bandwidth. The solution is obtained as the result of a lter-and-sum operation. Beams are steered towards diierent(More)
This paper discusses objective measures for real-time evaluation of feedback cancellation algorithms in hearing aids in the presence of non-white input signals. Based on these measures, the maximum stable gain, the sound quality and the time required to recover from instability are determined for several real-time frequency-domain adaptive feedback(More)
We describe project deLearyous, in which the goal is to develop a proof-of-concept of a serious game that will assist in the training of communication skills following the Interpersonal Circumplex (also known as Leary's Rose) –a framework for interpersonal communication. Users will interact with the application using unconstrained written natural language(More)
The performance of large vocabulary recognition systems, for instance in a dictation application, typically deteriorates severely when used in a reverberant environment. This can be partially avoided by adding a dereverberation algorithm as a speech signal preprocessing step. The purpose of this paper is to compare the effect of different speech(More)