A composite speaker module includes a vibration damper sheet, a first sound guide assembly, a first speaker driver, a second sound guide assembly, and a second speaker driver. The vibration damper sheet includes a first surface and a second surface opposite to the first surface. The first sound guide assembly includes a first sound guide and a first bracket. The first sound guide disposed on the first surface. The first bracket is connected to the first sound guide and extends away from the vibration damper sheet. The first speaker driver is disposed on the first bracket. The second sound guide assembly includes a second sound guide and a second bracket. The second sound guide disposed on the second surface. The second bracket is connected to the second sound guide and extends along a direction away from the vibration damper sheet. The second speaker driver is disposed on the second bracket.

An audio signal processing device, including: a digital signal processing module, an input module, an output module, and a control module. The digital signal processing module is in connection with the input module and the output module, and the control module is in connection with the output module. The output module includes at least two output channels, with each output channel including a power amplifier and a speaker in series connection The digital signal processing module is configured to receive an audio signal output by the input module and to process the audio signal with at least two different audio processing algorithms, and output the more than two audio processing signals. Each audio processing signal corresponds to one output channel. The control module is configured to control the operation state of the power amplifier of each output channel and the magnification thereof in operation.

According to various embodiments, a headset may be provided. The headset may include: a speaker having a main sound emission direction; and a movement member configured to effect movement of the speaker along a pre-determined path at least substantially perpendicular to the main sound emission direction upon actuation of the movement member.

Embodiments are described for a system of rendering object-based audio content through a system that includes individually addressable drivers, including at least one driver that is configured to project sound waves toward one or more surfaces within a listening environment for reflection to a listening area within the listening environment; a renderer configured to receive and process audio streams and one or more metadata sets associated with each of the audio streams and specifying a playback location of a respective audio stream; and a playback system coupled to the renderer and configured to render the audio streams to a plurality of audio feeds corresponding to the array of audio drivers in accordance with the one or more metadata sets.

An eyeglass headphone with a frame that is constructed and arranged to be carried by the head of a wearer, the frame comprising a bridge that is adapted to be supported by the wearer's nose, and a left temple and a right temple that extend rearwardly from the bridge, toward the left and right ears of the wearer, respectively, and a dipole loudspeaker built into the frame, where the dipole loudspeaker comprises a driver that emits front-side acoustic radiation from its front side, and emits rear-side acoustic radiation from its rear side. The frame comprises at least first and second sound-emitting openings, wherein the first sound-emitting opening is constructed and arranged to emit front-side acoustic radiation and the second sound-emitting opening is constructed and arranged to emit rear-side acoustic radiation.

The present invention relates to a canal type earphone configured such that an outlet for a sound wave to be reproduced is inserted into an inlet of a user's ear canal. The earphone includes an electrodynamic speaker unit configured to electroacoustically convert an audio signal into a high-frequency sound wave containing a band component having a higher frequency than that of an audible band of a human being, thereby emitting the high-frequency sound wave; an electromagnetic speaker unit configured to electroacoustically convert the audio signal into a low-frequency sound wave containing more band components having a lower frequency than that of the high-frequency sound wave, thereby emitting the low-frequency sound wave; and a housing to the inside of which the electrodynamic speaker unit and the electromagnetic speaker unit are attached.

A low-profile earbud is disclosed that sits securely within an ear of a user. The earbud includes a protruding portion that passes through a channel defined by the tragus and anti-tragus of the ear. In some embodiments, the protruding portion can take the form of a cable configured to supply power and transfer data to the earbud. In some embodiments, the protruding portion can provide additional space for electrical components and sensors supporting the earbud.

Example embodiments relate to an apparatus, method and computer program for output of stereo or spatial audio. The method may for example comprise providing first data representing stereo or spatial audio, providing second data representing other audio and determining an orientation and/or configuration of an apparatus. The method may also comprise outputting the first data to selected first and second loudspeakers of the apparatus, comprising at least three loudspeakers based, at least in part, on the orientation and/or configuration of the apparatus; and outputting the second data to at least a third loudspeaker of the at least three loudspeakers other than the first and second loudspeakers.

A speaker unit that has a housing, a lower substrate that is fixed to the housing, a plurality of first ultrasonic vibrators that are arranged on the lower substrate, an upper substrate that is fixed to the housing and has a plurality of openings (OP) formed therein at locations that correspond to the first ultrasonic vibrators, and a plurality of second ultrasonic vibrators that are arranged on the upper substrate.

A trained machine configured to input a stereo sound track and separate the stereo sound track into multiple N separated stereo audio signals respectively characterized by multiple N audio content classes. All stereo audio as input in the stereo sound track is included in the N separated stereo audio signals. A mixing module is configured to spatially localize symmetrically and without cross-talk, between left and right, the N separated stereo audio signals into multiple output channels. The output channels include respective mixtures of one or more of the N separated stereo audio signals. Gain is adjusted of the output channels into left and right binaural outputs to conserve summed levels of the N separated stereo audio signals distributed over the output channels.