Unwanted noises have a negative influence over communication because it disturbs the conversation and make the communication impossible. Speech enhancement algorithms are used for improving the quality and intelligibility or to reduce listener fatigues. Assessment of speech quality can be done by using either subjective listening test or objective quality measure. Evaluation of several objectiv...

This paper describes a new methodology for the speech quality assessment of hands-free terminals and discusses the results of a pilot study performed in 1996 at the Berlin laboratories for speech quality assessment at the Technology Centre of Deutsche Telekom. Up to now, critical speech quality aspects of hands-free terminals are usually assessed with conversational tests. With the test method ...

This research focuses on validating a Taiwanese speech corpus by using speech recognition and assessment to automatically find the potentially problematic utterances. There are three main stages in this work: acoustic model training, speech assessment and error labeling, and performance evaluation. In the acoustic model training stage, we use the ForSD (Formosa Speech Database) ,provided by Cha...

After a stroke, the speech quality of the patients is often reduced. This is usually caused by a deficit of the motor abilities of the vocal tract. The result is slurred speech. In the various patients, however, very different forms can appear. In the course of therapy, evaluation of the speech quality is required to determine the success of the treatment. At the moment, this assessment is perf...

Speaker variability is known to have an adverse impact on speech systems that process linguistic content, such as speech and language recognition. However, speech production changes in individuals due to stress and emotions have similarly detrimental effect also on the task of speaker recognition as they introduce mismatch with the speaker models typically trained on modal speech. The focus of ...

An important parameter in quality assessment of speech enhancement systems is speech distortion, measured in terms of quality of the speech component. In fact, in the context of noise reduction, the user tends to prefer a certain degree of residual noise over distorted speech with suppressed background noise. The challenge of instrumental speech component quality evaluation lies, among others, ...

This paper presents a new concept of intelligent e-learning systems with intelligent two-way speech communication between an elearning system and the user. The system uses intelligent methods for analysis, evaluation and assessment of user knowledge and skills as well as e-learning process control, supervision and optimization. Developed as a prototype for mobile technologies, the communication...