Apparatus and method for focusing sound in array speaker system
AssigneeSamsung Electronics Co., Ltd.
InventorsSang-chul KO, Young-tae Kim, Jung-ho Kim, Jung-woo Choi
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Abstract
Provided are apparatus and method for focusing sound so that a sound radiation pattern output from an array speaker system composed of a plurality of speakers may approach a target sound radiation pattern. The sound focusing apparatus uses a focusing filter formed in consideration of sound characteristics of the array speaker system. In addition, the sound focusing apparatus may compensate for delay and gain values of each channel generated when an input signal is replicated to a plurality of channels and output through an array speaker in the array speaker system.
Claims9
A method of focusing sound in an array speaker system, the method comprising:
- processing an input signal using a focusing filter to which a filter value corrected using sound characteristic information including magnitude and phase of an output signal per channel when the input signal is output through the array speaker system, is applied;
- and
- compensating for delay and gain deviations with respect to a replicated input signal using a compensation filter formed on the basis of the delay and gain deviations of the replicated input signal generated while the input signal is replicated into as many signals as there are output channels by the focusing filter and output through the array speaker system.
An apparatus for focusing sound in an array speaker system, the apparatus comprising:
- a focusing filter outputting an input signal to have a preset sound radiation pattern using a filter value corrected using sound characteristic information including magnitude and phase of an signal output through each channel of the array speaker system;
- and
- a compensation filter compensating for delay and gain deviations of each channel while the input signal is replicated into as many signals as there are output channels and then output through the array speaker system.
Dependencies are inferred from the claim text.