摘要:
A silicon condenser microphone package is disclosed. The silicon condenser microphone package comprises a transducer unit, a substrate, and a cover. The substrate includes an upper surface having a recess formed therein. The transducer unit is attached to the upper surface of the substrate and overlaps at least a portion of the recess wherein a back volume of the transducer unit is formed between the transducer unit and the substrate. The cover is placed over the transducer unit and includes an aperture.
摘要:
A receiver assembly for a hearing aid device, the assembly comprising a case having an inner cavity, one or more mounts disposed within the inner cavity of the case, and a receiver disposed within the inner cavity of the case and connected to the mounts such that the receiver is suspended within the inner cavity of the case. The mounts dampen any vibration transmission from the receiver to the case and from the case to the receiver. Most significantly, acoustical noise from the receiver and any resulting distortion, feedback, and/or interference within the other components of the hearing aid device are substantially eliminated.
摘要:
A condenser microphone having a housing (12), a diaphragm assembly (14) and backplate (16) located within the housing. A spacer (18) isolates the diaphragm assembly from the housing and spaces the diaphragm assembly from the backplate. The spacer has a first portion disposed between the backplate and the diaphragm assembly, and a second portion disposed between the diaphragm assembly and the wall of the housing. A conductive member (20) electrically connects the backplate to a ground.
摘要:
An electret condenser microphone includes a housing (101), a diaphragm (108a) disposed within the housing (101), first and second sound inlet ports and an acoustic resistive material (118) disposed within the housing and in the acoustic path between the second inlet port and the diaphragm (108a). The acoustic resistive may further electrically couple a backplate (112) coupled to the diaphragm (108a) to an amplifier disposed within the housing (101).
摘要:
Multiple embodiments of solid state micro-structures, such as a condenser microphone, are disclosed. According to one embodiment, the transducer includes a fixed perforated member, a freely movable diaphragm spaced from the perforated member; a support ring in the perforated member maintaining the proper spacing between the diaphragm and the perforated member near the perimeter; and compliant suspension springs allowing the diaphragm to rest freely on the support ring and yet mechanically decouples the diaphragm from the perforated member. According to another embodiment, a raised micro-structure is disclosed for use in a silicon based device. The raised micro-structure comprises a generally planar film having a ribbed sidewall supporting the film.
摘要:
A hearing aid for converting input acoustical energy into an electrical signal, processing the signal and converting the processed electrical signal into acoustical energy is disclosed. The hearing aid includes a digitally programmable gain amplifier. The digitally programmable gain amplifier comprises circuitry for decoding a digital control input signal (referred to as the serial data input), and based upon the digital control signal it comprises a means for changing the amplifier gain.
摘要:
A solid state transducer (9) is disclosed. The transducer comprises a micromachined electrostatic actuator (16) formed of silicon, a support brace (10) disposed about the actuator, and a membrane (14) coupled to the support brace. The actuator is operatively coupled to the membrane. The transducer may be either a receiver or a microphone.
摘要:
A directional microphone system is disclosed, which comprises circuitry for low pass filtering a first order signal, and circuitry for high pass filtering a second order signal. The system further comprises circuitry for summing the low pass filtered first order signal and the high pass filtered second order signal. A method of determining whether a plurality of microphones have sufficiently matched frequency response characteristics to be used in a multi-order directional microphone array is also disclosed. For a microphone array having at least three microphones, wherein one of the microphones is disposed between the other of the microphones, a method of determining the arrangement of the microphones in the array is also disclosed.