Purpose of the development: Designed to improve the efficiency of audio system with multiple-definition sound absorption type noise.

Recommended application field: Can be used in hands-free system, the detection system of broadcasting in a variety of applications, systems, computer speech recognition, voice control systems, mobile objects (eg, robots), the system of industrial communication systems such as "hands-free", etc.

The development stage readiness: Ready for application

Description of the development:
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The efficiency is achieved by the fact that in-phase noise reduction system, which includes first and second microphones, respectively, the first and second amplifiers, first and second analog-to-digital converters, introduced additional third and fourth microphones, respectively third and fourth amplifiers, third and fourth analog-to-digital converters, processing unit, comprising a first and a second cross-correlation filters, voice activity detector, which includes the first and second low-pass filters and the determinant of the presence or absence of voice, pink noise generator, the switch signal, the first and second digital-to-analog converters. Being connected in the first and second microphones, the first and second amplifiers, first and second analog-to-digital converters form the first cluster microphone input, and connected in the third and fourth microphones, third and fourth amplifiers, third and fourth analog-to-digital converters form respectively second input cluster of microphones, in each of which the first and second, third and fourth pairs of microphones are located at a distance d1 from each other, the distance between the input microphone clusters larger than the distance d2 d1, and the outputs of the first and second input cluster of microphones connected to the first and second input of the processing unit. In addition, the determinant of whether or not a voice, with a variable time window signal detection, and the lack of voice is different and is given processing unit outside the system. In addition, all components of the processing unit housed in a single chip.

Information about newness of the development:
there are Ukrainian patents -- 1 items

corresponds technical description
Ready for implementation

Possibility of transfer abroad:
Licence's sale
Combinated reduction to industrial level

Photo

Country Ukraine

For additional information turn to:
E-mail: gal@uintei.kiev.ua