A management server controls, by use of a first database, a first audio client system that includes a first speaker and a second speaker. The first database includes a first standard characteristic impedance, which is obtained by application of statistical processing to a first characteristic impedance of the first speaker and a second characteristic impedance of the second speaker. The management server acquires a new characteristic impedance of the first speaker, compares the new first characteristic impedance with the first standard characteristic impedance, to determine a condition of the first speaker, based on a result of the comparison. The management server updates, based on the condition of the first speaker, the first standard characteristic impedance of the first database, using the new first characteristic impedance.

Certain embodiments relate generally to modifying audio playing on a first device based on detection of that audio by a second device. Other embodiments relate to transferring audio between a first device and a second device. More particularly, audio playing from a first device may be muted, stopped, or adjusted in volume based on detection of that audio by, or interaction with, a second device. Likewise, audio may be transferred from a first device to a second device based on communications between the first and second devices, proximity of the first and second devices relative to one another, proximity of a user to either the first or second device, and so on.

An audio system can be configured to generate an audio heatmap for the audio emission potential profiles for one or more speakers, in specific or arbitrary locations. The audio heatmap maybe based on speaker location and orientation, speaker acoustic properties, and optionally environmental properties. The audio heatmap often shows areas of low sound density when there are few speakers, and areas of high sound density when there are a lot of speakers. An audio system may be configured to normalize audio signals for a set of speakers that cooperatively emit sound to render an audio object in a defined audio object location. The audio signals for each speaker can be normalized to ensure accurate rendering of the audio object without volume spikes or dropout.

A correction method of acoustic characteristics of a plurality of speakers installed in a room, the correction method groups speakers, among the plurality of speakers, having identical attachment condition to the above-mentioned room, measures each of output characteristics of the grouped speakers, calculates an average characteristic of the output characteristics of the grouped speakers, and corrects each of the output characteristics of the grouped speakers based on the average characteristic.

There is provided a smart audio system including multiple audio devices and a central server. The central server confirms a model of every audio device and a position thereof in an operation area in a scan mode. The central server confirms a user position or a user state to accordingly control output power of a speaker of each of the multiple audio devices in an operation mode.

Embodiments of the present invention are directed to a system and method for demonstrating spatial performance of a demonstration speaker model to consumers in order to evaluate different speakers. The system and method comprise a microphone array for recording the output of the demonstration speaker model. The system and method comprise acoustic input samples for processing to an acoustic output and a processor for determining characteristics of each microphone recording, and processing an acoustic input sample and characteristics of each microphone recording corresponding to a selected demonstration speaker model. The system and method further comprise a reference speaker model for outputting an acoustic signal based on the result of the processing. The processing compensates for the performance characteristic of the reference speaker and the performance characteristic of the selected demonstration speaker so as to mimic the spatial characteristics of the demonstration speaker while avoiding bias from the reference speaker.

Various systems and methods for implementing a vehicle with an external speaker and microphone are described herein. A system includes an audio processor to receive audio data, the audio data sensed by a microphone array installed on the vehicle, the audio data generated by a source outside of the vehicle; an audio classification circuit to analyze the audio data using a machine learning technique to determine a sound event; and a vehicle interface to transmit a message to a vehicle control system, the message based on the sound event.

Example embodiments may include one or more of receiving sound emissions signals from channels via sound emitters, controlling the sound emission signals, via relay circuits, and one of the relay circuits is configured to interrupt one of the sound emission signals associated with one of the sound emitters while the other sound emissions signals pass to the other corresponding sound emitters, and receiving, via a sound detection circuit, an electrical ambient sound signal based on ambient sound sensed by the one of the sound emitters responsive to the interrupted one of the sound emission signals.

The present application relates to the technical field of audio processing, and provides a method and a device for playing a smart speaker and a smart speaker. The method includes: controlling each speaker to output audio signals at a corresponding initial broadcast frequency, initial broadcast amplitude and initial broadcast phase when an azimuth angle of a user is not obtained; calculating an actual broadcast amplitude and an actual broadcast phase of each speaker through a sound energy focusing algorithm, the azimuth angle of the user, a broadcast angle of each speaker and the initial broadcast frequency of each speaker when the azimuth angle of the user is obtained; and controlling each speaker to output audio signals according to the corresponding initial broadcast frequency, the actual broadcast amplitude and the actual broadcast phase.

An audio system can be configured to generate an audio heatmap for the audio emission potential profiles for one or more speakers, in specific or arbitrary locations. The audio heatmap maybe based on speaker location and orientation, speaker acoustic properties, and optionally environmental properties. The audio heatmap often shows areas of low sound density when there are few speakers, and areas of high sound density when there are a lot of speakers. An audio system may be configured to normalize audio signals for a set of speakers that cooperatively emit sound to render an audio object in a defined audio object location. The audio signals for each speaker can be normalized to ensure accurate rendering of the audio object without volume spikes or dropout.