An audio compensation method is applied to a playback device which includes a first distance detector, a second distance detector, an audio output module and an operation processor. The operation processor executes the audio compensation method to acquire a projection distance and a relative angle of the playback device relative to a projection screen via the first distance detector and the second distance detector, to acquire an installation parameter of the playback device, to search at least one audio output setting from an audio setting table in accordance with the projection distance and the relative angle and the installation parameter, and utilize the audio output setting to drive the audio output module.

In at least one embodiment, a system for providing an adaptive loudspeaker assembly is provided. A loudspeaker array transmits an audio output signal in an omnidirectional sound mode in a room having a plurality of walls. A microphone array is coupled to the loudspeaker array to capture the audio output signal in the room. At least one controller is programmed to receive the captured audio output signal and to determine that at least one first wall of the plurality of walls is closest to the loudspeaker array based on the captured audio output signal. The at least one controller is further programmed to change a sound mode of the loudspeaker array from transmitting the audio output signal in the omnidirectional mode into a beamforming sound mode to transmit the audio output signal away from the at least one first wall of the plurality walls.

An example method of operation may include receiving audio data, via one or more microphones of a network device, from an audio source, determining a location of the audio data based on a direction and amplitude of the received audio data, modifying the audio data for output via a loudspeaker of the network device, and outputting, via the loudspeaker, the modified audio data.

An acoustic control system includes a peripheral wall provided so as to surround a seat, and an upper portion of the peripheral wall being opened, a speaker provided inside the peripheral wall and capable of outputting a reproduced sound from a sound source, a microphone provided toward an outside of the peripheral wall and configured to collect an environmental sound around the peripheral wall, and a processor. The processor configured to suppresse a level of the reproduced sound in a predetermined frequency band from the speaker based on the environmental sound collected by the microphone.

The sound signal processing method includes obtaining a sound signal of a sound source, convolving, according to a location of the sound source an impulse response of an early reflection sound with the sound signal to generate an early reflection sound control signal that reproduces an early reflection sound, and convolving an impulse response of a reverberant sound with the sound signal to generate a reverberant sound control signal that reproduces a reverberant sound.

An example method of operation may include applying a set of initial power and gain parameters for a speaker, playing a stimulus signal via the speaker, determining a sound level at a microphone location and a sound level at a predefined distance from the speakers, determining a gain at the microphone location based on a difference of the sound level at the microphone location and the sound level at the predefined distance from the speaker, and applying the gain to the speaker output.

The present disclosure relates to a method by which a third device transmits audio data in a short-range wireless communication system, and an apparatus for same. According to the present disclosure, the method comprising: receiving, from a first device and a second device, capability information related to the audio data output capabilities of the first device and the second device; determining, based on the capability information, whether to form a channel for audio data transmission between the first device and the second device; transmitting, to the first device and the second device, setting information for outputting audio data of the first device and the second device, based on the determination result; and transmitting the audio data to the first device and the second device, wherein the positions and the audio data output time points of the first device and the second device are determined based on the setting information.

An example method of operation may include identifying speakers and microphones connected to a network controlled by a controller, assigning a preliminary output gain to the speakers used to apply test signals, measuring ambient noise detected from the microphones, recording chirp responses from all microphones simultaneously based on the test signals, deconvolving all chirp responses to determine a corresponding number of impulse responses, and measuring average sound pressure levels (SPLs) of each of the microphones to obtain a SPL level based on an average of the SPLs.

Some noise compensation methods involve receiving microphone signals corresponding to ambient noise from a noise source location in or near an audio environment, determining or estimating a listener position in the audio environment and estimating at least one critical distance, which is a distance from the noise source location at which directly propagated sound pressure is equal to diffuse field sound pressure. Some examples involve estimating whether the listener position is within the at least one critical distance and implementing a noise compensation method for the ambient noise based, at least in part, on an estimate of whether the listener position is within the critical distance.

A sound signal processing method includes: obtaining a plurality of sound signals respectively collected by a plurality of microphones arranged in a space; adjusting respective levels of the plurality of sound signals in accordance with respective positions of the plurality of microphones; mixing the plurality of sound signals having the adjusted respective levels to thereby obtain a mixed signal; and generating a reflected sound by using the obtained mixed signal.