SOUND ACQUISITION VIA EXTRACTION OF GEOMETRICAL INFORMATION FROM DIRECTION OF ARRIVAL ESTIMATES Russian patent published in 2015 - IPC H04R3/00 

FIELD: physics, acoustics.

SUBSTANCE: invention relates to acoustics, particularly to means of processing audio signals. The device comprises a sound events position estimating unit and an information computing module. The sound events position estimating unit is adapted to estimate the position of a sound source based on information on a first direction and a second direction, information on which is received from a first and a second real spatial microphone. The information computing module is adapted to generate an output audio signal based on a first recorded input audio signal, based on the virtual position of a virtual microphone and based on the position of the sound source. The information computing module comprises a propagation compensator adapted to modify a first input audio signal based on first and second amplitude attenuation by adjusting the amplitude value, the magnitude value or phase value of the recorded input audio signal. The compensator is also adapted to compensate for a first time delay between the arrival of the sound wave emitted by a sound event at the first real spatial microphone and the arrival of the sound wave at the virtual microphone.

EFFECT: high sound quality and low reverberation value.

18 cl, 17 dwg