A voice-controlled electronic device that includes an axisymmetric device housing having a longitudinal axis bisecting opposing top and bottom surfaces and a side surface extending between the top and bottom surfaces. The device can further include a plurality of microphones disposed within the device housing and distributed radially around the longitudinal axis; a processor configured to execute computer instructions stored in a computer-readable memory for interacting with a user and processing voice commands received by the plurality of microphones and first and second transducers configured to generate sound waves within different frequency ranges.

This application provides a speaker apparatus includes: a speaker sound emission unit that includes a speaker diaphragm and configured to convert an electrical signal into a sound signal by using the speaker diaphragm; a horn includes a sound inlet and a sound outlet, the speaker sound emission unit is disposed on the sound inlet, and the horn is configured to amplify the sound signal and then propagate an amplified sound signal through the sound outlet; and a phase plug, configured to adjust a phase and/or an amplitude of the sound signal from the sound inlet; where relative locations of the speaker diaphragm and the phase plug remain unchanged to form an incompressible air cavity.

A driver for a loudspeaker including an inner magnet disposed within a housing, an outer magnet disposed within the housing radially outward of the inner magnet, an inner voice coil having a first diameter, an outer voice coil having a second diameter, the second diameter being larger than the first diameter, where poles of the inner and outer magnets are oppositely disposed, where the inner magnet is configured to contribute only to a magnetic circuit of the inner voice coil, and where the outer magnet is configured to contribute to the magnetic circuit of the inner voice coil and to a magnetic circuit of the outer voice coil.

A phase plug for a loudspeaker having a driven diaphragm, wherein at least a portion of the surface of the phase plug disposed in use adjacent the diaphragm is generally annular in two orthogonal directions and has an axis in a third orthogonal direction, and wherein at least a portion of the said annular surface is shaped such that as successive radial cross-sections through the annular surface are generated by rotating a plane about the axis, the cross-sectional shape of the surface of the phase plug varies periodically as the angle of rotation increases.

A speaker device for reproducing sound within a predetermined audio spectrum is provided. The speaker device comprises: a housing including a top, a bottom, and a side surface; at least one speaker disposed within the housing, the at least one speaker including a speaker flange facing towards the bottom; a waveguide including at least a first surface defining at least one sound channel for conducting a given sound produced by the at least one speaker, and the at least one channel includes a first zone, a second zone, and a third zone sequentially defined along a length thereof to provide for sound reproduction from 100 Hz to 20000 Hz.

A product for detecting people approaching an isolated user, discouraging the detected people from disturbing the user, and for taking messages from the approaching people. The product may be embodied in noise-canceling headphones that the user is wearing, for example. The product can include a camera and a microphone that can detect approaching people. The product can also include an externally-facing speaker that can play an audio message to the approaching person to attempt to discourage the person from disturbing the user. The product can also prompt the person to leave a message for the user and then record the subsequent message. The user can review the message at a later time.

The present disclosure provides an electronic apparatus (1000, 2000, 4000), including a housing. One end of the housing is provided with an accommodating cavity (1200, 2100, 4100). A sound guide assembly is provided in the accommodating cavity. The sound guide assembly includes a sound box (1300, 2200, 4200) and a sound guide device (2300, 4300). The sound guide device includes a sound receiving portion (2310) and a sound guide body (2320). The sound receiving portion is connected with the sound box. The sound guide body is configured to lead out a sound. An end surface (2312) of the sound receiving portion includes a sound inlet (2311, 4311). A tail end of the sound guide body deviating from the sound receiving portion includes a sound outlet (2321, 4321). A vertical height of a tail end of the sound guide body is smaller than that of the sound receiving portion.

A coaxial compression driver including a housing, a first vibrating membrane for relatively lower frequencies housed in the housing where the first vibrating membrane faces a first compression chamber in communication with a first acoustic conduit, a second vibrating membrane for relatively higher frequencies housed in the housing, where the second vibrating membrane faces a second compression chamber in communication with a second acoustic conduit the first vibrating membrane and the second vibrating membrane arranged in the housing being coaxial or substantially coaxial with respect to each other, the first acoustic conduit and the second acoustic conduit converge into a common output acoustic conduit, and the coaxial compression driver includes a passive low pass filter at least partially housed in the first acoustic conduit.

A voice-controlled electronic device that includes a device housing having a longitudinal axis bisecting opposing top and bottom surfaces and a side surface extending between the top and bottom surfaces. The device can further include one or more microphones disposed within the device housing and distributed radially around the longitudinal axis; a processor configured to execute computer instructions stored in a computer-readable memory for interacting with a user and processing voice commands received by the one or more microphones and first transducer and second transducers configured to generate sound waves within different frequency ranges.

An acoustic waveguide in accordance with one or more embodiments of the present technology that comprises a housing having a proximal end with an inlet aperture and a distal end with an outlet aperture, and a mounting flange positioned at the proximal end and configured to acoustically couple a driver to inlet aperture. A plurality of sound channels extend through the housing and acoustically couple the inlet aperture to the outlet aperture. Each sound channel at least partially defining a sound path has an acoustic length, wherein at least one of the sound paths of the plurality of sound channels has a bend angle that exceeds 180 degrees.