Method for generating and outputting an acoustic multichannel signal, comprising the steps of: supplying a stereo signal (S), splitting the supplied stereo signal (S) into a plurality of perception-direction-dependent acoustic signal components (S.1-S.5), generating an acoustic multichannel signal by mixing each perception-direction-dependent acoustic signal component (S.1-S.5) onto an output channel (4.1-4.12) of an acoustic output apparatus (4) that comprises a plurality of, in particular more than two, acoustic output channels (4.1-4.12), outputting the generated multichannel signal over respective acoustic output channels (4.1-4.12) of the acoustic output apparatus (4).

An electronic apparatus is provided. The electronic apparatus includes a communication interface; a display; an internal speaker; and a processor configured to control the internal speaker to generate a first audio signal and control the communication interface to transmit a signal to control an external audio device to generate a second audio signal that is synchronized with the first audio signal. The processor is configured to: obtain a first processing time regarding the first audio signal and a second processing time regarding the second audio signal; and control the internal speaker and the communication interface based on the first processing time and the second processing time so that a difference between a first output timing of the first audio signal and a second output timing of the second audio signal is less than a predetermined value.

The present invention provides methods and systems for digitally processing audio signals in two-channel audio systems and/or applications. In particular, the present invention includes a first filter structured to split a two-channel audio input signal into a low frequency signal and a higher frequency signal. An M/S splitter is then structured to split the higher frequency signal into a middle and a side signal. A detection module is then configured to create a detection signal from the middle signal, which is used in a compression module configured to modulate the side signal to create a gain-modulated side signal. A processing module is then structured to combine the low frequency signal, middle signal, and the gain-modulated side signal to form a final output signal.

Various implementations include computer-implemented methods and related systems for controlling the phantom center image of an audio output in an automobile. In one implementation, a method includes: receiving at least one user interface command to modify a phantom center image of audio output from the audio system in the automobile, wherein the phantom center image of the audio output includes a designated position of sound produced by a set of speakers in the audio system other than physical locations of the set of speakers in the audio system; and adjusting a perceived location of the phantom center image of the audio output from the audio system based upon the at least one user interface command to modify the phantom center image of the audio output.

A method and a terminal for playing an audio file in a multi-terminal cooperative manner include obtaining, by a source terminal, an audio signal frame, the audio signal frame includes a left channel signal and a right channel signal, obtaining, by the source terminal, a central channel signal and a surround channel signal based on the left channel signal and the right channel signal, obtaining, by the source terminal, a current location of a virtual sound source corresponding to the central channel signal, and generating, based on the current location and the central channel signal, a sound channel signal corresponding to the terminal in at least two sound channel signals, superposing, by the source terminal, the sound channel signal on the surround channel signal, to obtain a to-be-played sound channel signal corresponding to the terminal, and playing, by the source terminal, the to-be-played sound channel signal.

Circuitry can separate a multi-channel input signal into a center signal and a residual signal, apply time-varying center and residual gains to the center and residual signals, and combine the gain-adjusted center and residual signals to form a multi-channel audio signal. The center and residual gains are automatically determined in response to the center and residual signals so as to prevent each channel of the multi-channel audio signal from exceeding a target volume. During first times, the center and residual gains can vary synchronously so as to ensure that amplitude and phase relationships among channels in the multi-channel input signal are retained into the multi-channel audio signal. During second times, the center and residual gains can vary independently so as to reduce the energy of the residual signal compared to the center signal in the multi-channel audio signal.

An audio system provides for soundstage-conserving channel summation. The system includes circuitry that generates a first rotated component and a second rotated component by rotating a pair of audio signal components. The circuitry generates left quadrature components that are out of phase with each other using the first rotated component and generates right quadrature components that are out of phase with each other using the second rotated component. The circuitry generates orthogonal correlation transform (OCT) components based on the left and right quadrature components. Each OCT component including a weighted combination of a left quadrature component and a right quadrature component. The circuitry generates a mono output channel using one or more of the OCT components.

A multi-channel audio playback system includes a front speaker, a wearable speaker, and a signal processor. The front speaker is configured to receive front sound field signals (FS). The wearable speaker is designed to allow a listener to hear environmental sounds and is configured to receive rear sound field signals (RS). The signal processor is configured to divide a multi-channel signal into a front sound field signal group (FSG) and a rear sound field signal group (RSG); mix FSG (RSG) and generate the FS (RS), wherein the number of the FS (RS) is equal to the number of the drivers of the front speaker (wearable speaker); and perform time delay adjustment on FS or RS, so that a difference between times for sound waves emitted by the front speaker and by the wearable speaker to respectively reach ears of the listener is less than a default value.

Methods and systems are provided for audio devices with enhanced directional operations. A user of an audio system may be prompted to provide an audio input. Once received, the audio input may be processed, and based on processing of the audio input positioning related information associated with the user may be generated. Outputting of an audio output in the audio system may then be controlled based on the positioning related information. Controlling the outputting of the audio output may include configuring at least one audio output related parameter or function for optimizing directionality of the audio output based on the positioning related information.

A display apparatus according to an embodiment of the present disclosure includes: a thin plate-like display cell that displays an image; M exciters that are disposed on a back surface side of the display cell, and vibrate the display cell; and a driving section that drives the display cell and the M exciters.