Patent ID: 9538308
Date: 2017-01-03
CPC Classifications: H04S

Claim:
1. A method for adjusting sound emitted by a loudspeaker in a room, comprising: driving one or more transducers to emit sounds based on a first segment of an audio signal; characterizing spectral characteristics of the first segment; receiving, by the loudspeaker, a sensed audio signal from a handheld device, wherein the sensed audio signal represents the sounds emitted by the one or more transducers corresponding to the first segment of the audio signal; estimating, by an adaptive filter, an impulse response for the room based on the first segment of the audio signal; determining an error value for the estimated impulse response based on the sensed audio signal; storing the impulse response and the spectral characteristics of the first segment, in response to the error value being below a predefined error level and the impulse response being within a tolerance level of one or more previously stored impulse responses; and processing a second segment of the audio signal based on a given one or more previously stored impulse responses, in response to determining that previously stored spectral characteristics, corresponding to the given one or more previously stored impulse responses, cover a predefined spectrum.