MATRIX OF OPTIMAL MIXING AND USING DECORRATORS FOR SPACE SOUND PROCESSING Russian patent published in 2017 - IPC G01L19/00 

FIELD: physics.

SUBSTANCE: device for generating an audio signal having two or more audio channels. The device comprises a pre-processing unit and a signal processor. The pre-processing unit is configured to calculate the first covariance of the audio signal. The processor is configured to generate an output audio signal by applying a mixing rule to the two audio channels. The processor is configured to determine the mixing rule based on the first covariance of the input audio signal and based on the second covariance of the output audio signal. The second covariance is different than the first covariance. Mixing is performed in such a way as to minimize errors in the sound reproduction. The mixing rule depends on the input audio signal and the display matrix. Herewith the diagonal value of the first covariance matrix determines the energy of the input audio channels. The diagonal value is the inter-channel correlation between the input channels.

EFFECT: improving the sound quality.

25 cl, 15 dwg