This application provides a combined-type phase plug, and a compression driver and a speaker using same. The combined-type phase plug of this application includes a first phase plug and a second phase plug. The first phase plug includes a cone, a plurality of fins, and a base ring. The plurality of fins is located on an outer surface of the cone. The base ring is located below the cone, and the plurality of fins extends downward to the base ring. The base ring is connected to the plurality of fins but is not connected to the cone. That is, the cone and the base ring are connected only by the plurality of fins. The second phase plug is located under the first phase plug. The second phase plug includes a tapered cone and a base. The tapered cone is located inside the base ring, and a first space is formed between the tapered cone and the base ring. A second space is formed between the tapered cone and the cone, and the second space extends to the first space. The base extends horizontally outward from the tapered cone, so that the base ring is located on the base. Multiple channels are formed by means of extensions of the first space and the second space to improve the acoustic performance.

An embodiment of the technology includes Tri-Ear Buds for a wireless in-ear utility device that provides in-ear frequency filtering and can also offer a horn that increases the wireless in-ear utility device's ability to deliver sound. The horn effect can provide higher sound levels while consuming lower battery power. The channels can provide increased safety and comfort for the user. Embodiments of the technology can include accommodation for a balance between the wearable in-ear devices and hearing aids, such as to accommodate the wearable device requiring more sealing in the ear canal for better sound quality, to accommodate the hearing aid seals requiring more leakage for allowing for the user's voice to have an increased naturalness in sound, where the balance between the both can be frequency leakage in the 50 Hz to 300 Hz, which can allow for the seal to produce high quality performance for the two platforms.

This application provides a combined-type phase plug, and a compression driver and a speaker using same. The combined-type phase plug of this application includes a first phase plug and a second phase plug. The first phase plug includes a cone, a plurality of fins, and a base ring. The plurality of fins is located on an outer surface of the cone. The base ring is located below the cone, and the plurality of fins extends downward to the base ring. The base ring is connected to the plurality of fins but is not connected to the cone. That is, the cone and the base ring are connected only by the plurality of fins. The second phase plug is located under the first phase plug. The second phase plug includes a tapered cone and a base. The tapered cone is located inside the base ring, and a first space is formed between the tapered cone and the base ring. A second space is formed between the tapered cone and the cone, and the second space extends to the first space. The base extends horizontally outward from the tapered cone, so that the base ring is located on the base. Multiple channels are formed by means of extensions of the first space and the second space to improve the acoustic performance.

An electronic device holder may include a body portion housed within an outer housing. The body portion may include surfaces that form a first cavity configured to receive the electronic device, and a second cavity. A sound transmitting passage can be positioned between the first cavity and the second cavity. The second cavity can passively amplify sound received from the second sound channel of the sound transmitting passage. The body of the electronic device holder can include a first wall, a first partition wall, and a second partition wall. The second wall can be generally parallel to a generally planar bottom surface of the holder and can be positioned between the first wall and the first partition wall so as to define a first cavity. A second cavity can be defined between the second partition wall and the outer housing.

A system for reforming sonar emissions from a sonar transducer element or an array of sonar transducer elements is provided. The system comprises the sonar transducer element or the array of sonar transducer elements. The sonar transducer element or the array of sonar transducer elements define an emitting face and are configured to transmit sonar signals along path(s). The system also comprises a horn comprising surface(s). Surface(s) are positioned adjacent to or in a spaced apart manner from the emitting face of the sonar transducer element or the array of sonar transducer elements so that the surface(s) are positioned at least partially in path(s) such that at least some of the sonar signals transmitted from the sonar transducer element or the array of sonar transducer elements are redirected based on interaction of the at least some of the sonar signals and surface(s).

An acoustical horn is disclosed which is configured to re-direct spherical acoustic wave fronts radiated from a transducer with a minimum amount of distortion. The acoustical horn includes top and bottom portion which are asymmetrically-shaped with respect to each other.

A loudspeaker includes a horn including a first end panel, a second end panel, a first side panel, and a second side panel. Edges of at least the first and second side panels define a diffraction slot opening. The first and second side panels are each fabricated from a sheet of flexible material held in a stressed, curved shape by at least a rigid support member. The panels are designed by an automated process based on a number of electro-acoustic transducers to be used in a loudspeaker, horizontal and vertical coverage angles for the loudspeaker, and a wall length for a horn of the loudspeaker.

Aspects of the present invention relate to an active noise system (4), a vehicle (1) with an active noise system (4), a method for controlling an active noise system (4), a computer program for controlling an active noise system (4) and an active noise controller (40). The wading detection system (3) includes sensors (30, 31, 32, 33) for detecting a wading depth and a wading detection controller (34). The active noise system (4) includes speakers (41, 42) for modifying the exhaust noise emitted from the vehicle (1). The wading detection controller (34) is operable to detect or anticipate a predetermined wading depth (W.sub.1, W.sub.2) at which the speakers (41, 42) will come into contact with the water. The active noise controller (40) is configured to deactivate the speakers (41, when the predetermined wading depth (W.sub.1, W.sub.2) is detected or anticipated by the wading detection controller (34).

A modular horn type loudspeaker and a modular horn array formed of modular loudspeakers. An acoustic horn includes a first acoustic module. The first acoustic module includes a first acoustic driver and a first acoustic duct, for conducting acoustic energy from the first acoustic driver. The first acoustic duct has a first opening through which acoustic energy is radiated. The first acoustic duct is characterized by a first centerline. A second acoustic module includes a second acoustic driver and a second acoustic duct, for conducting acoustic energy from the acoustic driver. The second acoustic duct has a second opening through which acoustic energy is radiated. The second acoustic duct is characterized by a second centerline.

The technology described in the document can be embodied in a speaker that includes one or more drivers, and an acoustic horn that includes a first side panel and a second side panel. Edges of the first and second side panels defines an opening for receiving acoustic outputs from one or more drivers. The speaker also includes a manifold disposed between the opening and the one or more drivers, the manifold including a plurality of acoustic passages for connecting the opening to each of the one or more drivers, and an adaptor. The adaptor is disposed between the manifold and the acoustic horn, and includes multiple apertures for the plurality of acoustic passages. The adaptor is configured to conform to a profile of the opening while maintaining a seal between the acoustic horn and the plurality of acoustic passages.