Method of applying a combined or hybrid sound-field control strategy
First Claim
1. A. method of applying a combined control strategy to reproduce multichannel audio signals in two or more sound zones, the method comprising:
- deriving a first cost function for controlling an acoustic potential energy in the zones to obtain acoustic separation between the zones in terms of sound pressure;
deriving a second cost function controlling a phase of sound provided in the zones;
combining the first cost function and the second cost function based on a weight to obtain a combined optimization; and
driving a plurality of loudspeakers based on the combined optimization.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of applying a combined control strategy for the reproduction of multichannel audio signals in two or more sound zones, the method comprising deriving a first cost function for controlling the acoustic potential energy, such as on the basis of the Acoustic Contrast Control method and/or the Energy Difference Maximation method, in the zones to obtain acoustic separation between the zones in terms of sound pressure, deriving a second cost function, such as the Pressure Matching method, controlling the phase of the sound provided in the zones, and where a weight is obtained for determining a combination of the first and second cost functions in a combined optimization.
25 Citations
13 Claims
-
1. A. method of applying a combined control strategy to reproduce multichannel audio signals in two or more sound zones, the method comprising:
-
deriving a first cost function for controlling an acoustic potential energy in the zones to obtain acoustic separation between the zones in terms of sound pressure; deriving a second cost function controlling a phase of sound provided in the zones; combining the first cost function and the second cost function based on a weight to obtain a combined optimization; and driving a plurality of loudspeakers based on the combined optimization. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification