Abstract

The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a diaphragm and a piezoelectric actuator coupled to the diaphragm to cause movement of the diaphragm. In certain aspects, the transducer also includes a member that limits bending of the actuator.

IPC Classes  ?

• B06B 1/06 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction

Abstract

The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a curved diaphragm and an actuator coupled to the curved diaphragm to cause movement of the curved diaphragm. In certain embodiments, the curved diaphragm has at least one free edge. In other embodiments, the left and right edges of the curved diaphragm are associated with auxiliary supports. In another embodiment, the acoustic transducer is a multi-pole loudspeaker wherein a curved diaphragm radiates the sound energy in a modified dipole pattern. The curvature of the radiating surface of the transducer reduces sound cancellation from sound energy reflected by nearby surfaces

IPC Classes  ?

• H04R 7/04 - Plane diaphragms

Abstract

The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a diaphragm and an actuator releasably coupled to the diaphragm to cause movement of the diaphragm. The transducer may also include at least one support, and the actuator may be releasbly coupled to both the diaphragm and the support to cause the diaphragm to move.

IPC Classes  ?

• H04R 1/20 - Arrangements for obtaining desired frequency or directional characteristics
• H04R 7/04 - Plane diaphragms
• H04R 7/22 - Clamping rim of diaphragm or cone against seating

Abstract

The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a diaphragm and an actuator coupled to the diaphragm to cause movement of the diaphragm. The transducer includes a member that limits bending of the diaphragm. A loudspeaker is a transducer that produces sound in response to an electrical audio signal input. The vast majority of loudspeakers in use today are electromagnetic transducers. Referred to as dynamic loudspeakers, that class has essentially remained unchanged since the 1920's.

IPC Classes  ?

• H03H 9/09 - Elastic or damping supports

Abstract

The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a speaker in the base of the transducer for emitting acoustic energy at a first range of frequencies. The transducer may also include a diaphragm coupled to the base that is configured to emit acoustic energy at a second range of frequencies. Transducers of the invention may also include at least one actuator coupled to the diaphragm to cause movement of the diaphragm and thus, the acoustic energy at the second range of frequencies.

IPC Classes  ?

• H04R 7/04 - Plane diaphragms

Abstract

The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a diaphragm and an actuator. In further aspects, the acoustic transducer includes a connector having a planar proximal end that tapers to a distal end. The proximal end may be coupled to the diaphragm and the distal end coupled to the actuator, such that the actuator causes movement of the diaphragm. In additional aspects, the acoustic transducer incudes a connector having a proximal end that couples to the diaphragm and a distal end that couples to the actuator. The proximal end of the connector can include a damping element. In other aspects, the diaphragm includes a connector, in which the connector tapers to a distal end that is configured to mate with the actuator such that the actuator causes movement of the diaphragm.

IPC Classes  ?

• H04R 7/04 - Plane diaphragms

Abstract

The present disclosure describes an apparatus and a system for generating electrical signals for a loudspeaker. The loudspeaker may include one or more piezoelectric actuators configured to deflect a diaphragm of the loudspeaker in response to an input signal. The apparatus may be configured to receive the input signal and to drive the piezoelectric actuators to deflect the diaphragm based on the received input signal.

IPC Classes  ?

• H02N 2/06 - Drive circuitsControl arrangements

Abstract

A multifunctional transducer diaphragm may be configured as audio speaker system for displays wherein the multifunctional transducer diaphragm is capable of polarizing light transmitted therethrough and can convert mechanical motion into acoustical energy. In a related embodiment, a display panel system may comprise a multifunctional display screen comprising a single multifunctional transducer diaphragm capable of polarizing light which converts mechanical motion into acoustical energy, simultaneously providing both display screen and audio speaker functionalities.

IPC Classes  ?

• H04R 1/02 - CasingsCabinetsMountings therein

Abstract

A wireless speaker may include a housing comprising a networking module configured to receive a signal from an audio source, a power amplifier configured to amplify the signal, and at least one speaker configured to translate the electrical signal into an acoustic wave. The wireless speaker may also include at least one electrical connector configured to be electrically and mechanically coupled to a power source, such as an AC outlet. The electrical connector may be configured to orientate the wireless speaker in various positions relative to wall and may be configured to allow the wireless speaker to pivot or rotate relative to the wall. The wireless speaker may also include at least one light source configured to illuminate at least a portion of the speaker membrane.

IPC Classes  ?

• H04B 5/00 - Near-field transmission systems, e.g. inductive or capacitive transmission systems