Technologies using vocal commands are very useful in situations where hands cannot be used (e.g. wearing gloves or in factory settings to operate complex machines). The performance of automatic speech recognition systems decreases significantly in the presence of noise or reverberation (i.e. echoes on objects and walls). This projects aims at improving the performance of […]

In a full-duplex hands-free voice communication system, a speaker located in a room at one end of the link may receive an echo of his/her voice due to the acoustic coupling between the loudspeaker and the microphone at the other end of the link. The goal of acoustic echo cancellation (AEC) is to remove such […]

There is a rapidly growing need for voice powered human-machine interaction modalities for varieties of devices. Despite enormous investment in research and development in this area by a number of companies, significant limitations remain which prevent the ubiquitous proliferation of speech recognition. These limitations include poor performance in the presence of noise, inability to handle […]