Thursday, April 23, 15:30 - 18:00, Location: Show and Tell Area B
Manli Zhu, Qi (Peter) Li, Joshua J. Hajicek
The purpose of the demo is to present two prototypes of microphone arrays from our recent research. The first one is a circular array. The hardware consists of eight microphone components and a DSP processor. The real-time software is an implementation of our new algorithms in adaptive beam-forming, sound source localization, and adaptive noise reduction. As an interactive demo, the dynamic beam pattern tracking a sound source is displayed in real time on a laptop connected to the microphone array through a USB interface. An ideal application of the microphone array is a new design of conference phone with the microphone array and many new features as shown in the prototype.
In addition to the circular array, we also present a small linear array consists of four microphone components for robust speech recognition in noisy environments. The algorithm and its hardware structure are published in ICASSP’09. This interactive, real-time demo provides a unique and exciting experience in comparing the microphone array technology with the traditional microphone. There is a significant difference in the sound quality. In summary, these two demos provide the evidences that microphone array technology is ready for robust speech recognition, consumer electronic products, and many new applications in the industry.