Patent ID: 9215542
Filing Date: 2015-12-15
Classification: H04R,H04S

Abstract:
1. An apparatus for measuring a plurality of loudspeakers arranged at different positions, comprising: a test signal generator for generating a test signal for a loudspeaker; a microphone device being configured for receiving a plurality of different sound signals in response to loudspeaker signals emitted by loudspeakers of the plurality of loudspeakers in response to the test signal; a controller for controlling emissions of the loudspeaker signals by the plurality of loudspeakers and for handling the plurality of different sound signals so that a set of sound signals recorded by the microphone device is associated with each loudspeaker of the plurality of loudspeakers in response to the test signal; and an evaluator for evaluating the set of sound signals for each loudspeaker to determine at least one loudspeaker characteristic for each loudspeaker and for indicating a loudspeaker state using the at least one loudspeaker characteristic for the loudspeaker, wherein the microphone device comprises a microphone array comprising three pairs of microphones arranged on three spatial axes; wherein an omnidirectional pressure signal is derived by the evaluator by using the signals received by the three pairs or using a further microphone arranged at a point in which the three spatial axes intersect each other, wherein the evaluator is configured for