The disclosure provides an electronic device including a substrate, a first vibrating unit, and a supporting unit. The substrate has a first surface. The first vibrating unit is disposed on the first surface and has a second surface. The second surface faces the first surface. The supporting unit is disposed between the substrate and the first vibrating unit. The first surface and the second surface are separated by a distance through the supporting unit. This distance ranges from equal to or greater than 0.06 mm to equal to or less than 65.4 mm.

A bone conduction speaker includes a housing, a vibration board and a transducer. The transducer is located in the housing, and the vibration board is configured to contact with skin and pass vibration. At least one sound guiding hole is set on at least one portion of the housing to guide sound wave inside the housing to the outside of the housing. The guided sound wave interfaces with the leaked sound wave, and the interfacing reduces a sound pressure level of at least a portion of the leaked sound wave. A frequency of the at least a portion of the leaked sound wave is lower than 4000 Hz.

An earplug includes a housing and a receiver positioned in the housing. The receiver may be configured to receive a wireless audio signal from an audio source external to the earplug and convert the wireless audio signal to an electrical audio signal. The earplug may include a speaker configured to receive electrical audio signal from the receiver and convert the electrical audio signal into audible sound output from a speaker port. The earplug may include a projection including an opening that defines at least a portion of a sound channel from the speaker. The projection may receive the audible sound output from the speaker and output the audible sound out of the earplug. The earplug may include earplug padding configured to form a seal with a user's ear canal. The earplug may include an acoustic vent positioned in the sound channel, including a waterproof membrane extending across the channel.

A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.

A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.

An open audio device including an acoustic radiator that emits front-side acoustic radiation from its front side, and emits rear-side acoustic radiation from its rear side. A front acoustic cavity receives front-side acoustic radiation and comprises at least one front sound-emitting opening, and a rear acoustic cavity receives rear-side acoustic radiation and comprises at least one rear sound-emitting opening. The front and rear acoustic cavities each have a fundamental frequency. The fundamental frequencies are within one octave of each other.

An apparatus for rendering an audio scene comprising an audio source at an audio source position and a plurality of diffracting objects, comprises: a diffraction path provider for providing a plurality of intermediate diffraction paths through the plurality of diffracting objects, an intermediate diffraction path having a starting point and an output edge of the plurality of diffracting objects and an associated filter information for the intermediate diffraction path; a renderer for rendering the audio source at a listener position, wherein the renderer is configured for determining, based on the output edges of the intermediate diffraction paths and the listener position, one or more valid intermediate diffraction paths from the audio source position to the listener position, determining, for each valid intermediate diffraction path of the one or more valid intermediate diffraction paths, a filter representation for a full diffraction path, and calculating audio output signals for the audio scene using an audio signal associated to the audio source and the filter representation for each full diffraction path.

An apparatus for rendering an audio scene comprising an audio source at an audio source position and a plurality of diffracting objects, comprises: a diffraction path provider for providing a plurality of intermediate diffraction paths through the plurality of diffracting objects, an intermediate diffraction path having a starting point and an output edge of the plurality of diffracting objects and an associated filter information for the intermediate diffraction path; a renderer for rendering the audio source at a listener position, wherein the renderer is configured for determining, based on the output edges of the intermediate diffraction paths and the listener position, one or more valid intermediate diffraction paths from the audio source position to the listener position, determining, for each valid intermediate diffraction path of the one or more valid intermediate diffraction paths, a filter representation for a full diffraction path, and calculating audio output signals for the audio scene using an audio signal associated to the audio source and the filter representation for each full diffraction path.

This application is directed to a display assistant device that acts as a voice-activated user interface device. The display assistant device includes a base, a screen and a speaker. The base is configured for sitting on a surface. The screen has a rear surface and is supported by the base at the rear surface. A bottom edge of the screen is configured to be held above the surface by a predefined height, and the base is substantially hidden behind the screen from a front view of the display assistant device. The speaker is concealed inside the base and configured to project sound substantially towards the front view of the display assistant device.

The present disclosure provides an acoustic output apparatus including one or more status sensors, at least one low-frequency acoustic driver, at least one high-frequency acoustic driver, at least two first sound guiding holes, and at least two second sound guiding holes. The status sensors may detect status information of a user. The low-frequency acoustic driver may generate at least one first sound, a frequency of which is within a first frequency range. The high-frequency acoustic driver may generate at least one second sound, a frequency of which is within a second frequency range including at least one frequency exceeding the first frequency range. The first and second sound guiding holes may output the first and second spatial sound, respectively. The first and second sound may be generated based on the status information, and may simulate a target sound coming from at least one virtual direction with respect to the user.