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US20130044899 Dual Backplate Microphone  
A dual backplate microphone is provided that utilizes either an electret condenser or a MEMS condenser configuration and in which an op-amp IC is electrically connected to both backplates and the...
US20070242839 REMOTE WIRELESS MICROPHONE SYSTEM FOR A VIDEO CAMERA  
A wireless audio receiver is provided that couples to a video camera using a standard audio connector. This enables a wide range of legacy and non-wireless video cameras to receive sound...
US20120076325 Phantom Power Circuit  
A phantom power circuit has a detection circuit and a limiting circuit, the detection circuit detecting a pulse current generated in association with connection or disconnection of a condenser...
US20060067540 Method for signal nonlinear distortion detection and adaptive gain control  
An apparatus includes a microphone to generate a voice signal. The apparatus further includes an adjustable gain circuit coupled to the microphone to selectively apply a gain to the voice signal....
US20060115099 Cord bush and control box for microphone  
The present invention provides a cord bush that makes it possible to reliably inhibit a liquid such as water from running along a cord, the length of which can be adjusted, into a control box...
US20110228954 Electret Microphone Circuit  
There is disclosed a microphone, a circuit, and a method. A microphone capsule may include an electret microphone and a field effect transistor (FET). A floating DC voltage source may have a first...
US20060147060 Multifunction preamplifier microphone  
Systems for a multifunction preamplifier microphone are disclosed. The system generally includes a microphone transducer and a configurable preamplifier circuit. The configurable preamplifier...
US20070025567 Microphone comprising an hf transmitter  
The invention concerns a wireless microphone system. The object of the present invention is to further develop such wireless microphone systems. A further aim of the invention is to provide an...
US20080205668 SENSITIVE SILICON MICROPHONE WITH WIDE DYNAMIC RANGE  
A silicon microphone includes a silicon microphone device, on which four acoustic transducers are integrated, an integrated circuit device and a package for housing the devices in an inner space...
US20070160235 Preamplifier arrangement for a drum microphone  
Preamplifier arrangement for a drum microphone, in which drum the microphone is arranged inside the drum and wherein the microphone is connected to a preamplifier, characterized in that the...
US20080095386 MUTE CIRCUIT FOR A MICROPHONE  
An apparatus having a microphone and a mute circuit (not shown in detail here) operable to be actuated by a rotating door assembly. The apparatus provides a mute circuit suitable to mute the audio...
US20070237344 Microphone enhancement device  
A microphone enhancing device combines an automatic gain control, a band-limited compressor, and a gate in one very compact package that is small enough and efficient enough to plug into or be...
US20070237345 METHOD FOR REDUCING PHASE VARIATION OF SIGNALS GENERATED BY ELECTRET CONDENSER MICROPHONES  
The invention provides a method for reducing phase variation of a signal generated by an electret condenser microphone. An error of a capacitance of the electret condenser microphone is reduced....
US20050169489 Wind-shielded acoustic sensor  
A wind-shielded acoustic sensor, having a microphone and a housing of the microphone. The housing has a streamlined, continuous profile about a latitudinal axis and a longitudinal axis thereof,...
US20080019540 Electret Microphone Circuit  
Microphones are used in acoustically insulated masks to prevent the speaker's voice from being overheard by others. Frequently, the microphone provides an input to speech recognition software. The...
US20070230717 CONDENSER MICROPHONE CIRCUIT  
In a condenser microphone which selectively uses a phantom power supply and a built-in battery power supply, and which switches load resistance elements of an impedance converter corresponding to...
US20130230183 ECHO CANCELLATION  
The invention is directed to echo cancellation for a microphone system. An exemplary microphone system comprises a first transistor, wherein a gate terminal of the first transistor is connected to...
US20110293116 BATTERY COMPARTMENT FOR CONDENSER MICROPHONE  
A battery compartment for a condenser microphone includes a battery space configured to hold a battery; a battery outlet open to a portion of a peripheral wall of the battery space and allowing...
US20090285414 AUDIO PROCESSING METHOD AND SYSTEM  
An audio processing system is provided. The audio processing system comprises a transducer, a gain stage, a capacitor network, and a preamplifier. The transducer transduces a sound signal to a...
US20050157892 Cabled & wireless dual-purpose microphone  
A cabled and wireless dual-purpose microphone is comprised of a receiver containing a transmission baseboard, the baseboard connected to a receiving unit and to Type 1 adapter, a wireless...
US20070291962 AUTOMOTIVE BALANCED MICROPHONE SYSTEM AND METHOD OF FORMING SAME  
An automotive balanced microphone system (300) includes a microphone (303) located in a vehicle mirror (301) connected in a balanced configuration for eliminating noise. A split resistor network...
US20070076904 Microphone preamplifier  
A microphone preamplifier, comprising a differential input (102) stage with a first and a second input terminal and an output stage with an output terminal; where the microphone preamplifier is...
US20090285415 INTERFACING CIRCUIT FOR A REMOVABLE MICROPHONE  
The invention provides an interfacing circuit for a removable microphone. In one embodiment, the interfacing circuit comprises a jack for receiving the removable microphone and an integrated...
US20090003629 Programmable Microphone  
A semiconductor die with an integrated electronic circuit, configured so as to be mounted in a housing with a capacitive transducer e.g. a microphone. A first circuit is configured to receive an...
US20130287231 System and Method for a Programmable Voltage Source  
In accordance with an embodiment, a method of operating a charge pump includes providing a first programmable voltage to a plurality of clock generators having outputs coupled to first nodes of...
US20060198539 Signal transmission mechanism between wireless microphone and receiver  
A signal transmission mechanism between a wireless microphone and a receiver comprises a receiver, a wireless microphone and a microphone transmitter. A recess is formed on a surface of the...
US20070009111 Microphone assembly with P-type preamplifier input stage  
A microphone assembly is provided that includes a condenser transducer element having a displaceable diaphragm and a back-plate. The displaceable diaphragm and the back-plate are arranged to form...
US20090169033 MICROPHONE MODULE WITH ELECTROMAGNETIC INTERFERENCE SHIELDING MEANS  
A microphone module includes a cabinet, a sensor, an integrated circuit chip, a first substrate, and a second substrate. The first substrate carries the integrated circuit chip and includes a...
US20080279397 MICROPHONE MADE FROM A POLYMER WAVEGUIDE  
An apparatus and method for making a microphone that is not susceptible to RF noise and that can be fabricated to be very thin. The microphone includes a light transmitter configured to generate...
US20090279717 Circuit module for a condenser microphone  
A circuit module for a condenser microphone includes a first chip mounted on a mounting surface of a printed circuit board and including an impedance converter circuit for amplifying an electrical...
US20090161890 MICRO-ELECTRO-MECHANICAL SYSTEMS (MEMS) CAPACITIVE SENSING CIRCUIT  
The present invention discloses a Micro-Electro-Mechanical Systems (MEMS) capacitive sensing circuit wherein two input nodes of a fully differential amplifier are separately connected to a MEMS...
US20060062403 Substrate crack inspection apparatus and substrate crack inspecting method  
The present invention aims to provide a substrate crack inspection apparatus comprising: a striking portion for producing a sound by providing a vibration to a substrate; a first microphone for...
US20080317262 Microphone Having an Output Signal Amplifier  
A microphone is described including a microphone housing having a microphone capsule disposed therein. The microphone is connected via a microphone cable to an audio system, and has an integrated...
US20070269058 MICROPHONE CIRCUIT  
A microphone circuit includes an amplifier for amplifying an electric signal output from an electroacoustic transducing module, an external power supply circuit capable of supplying power for...
US20100310096 Switchable Attenuation Circuit for MEMS Microphone Systems  
A switch control circuit monitors a signal produced by a MEMS or other capacitor microphone. When a criterion is met, for example when the amplitude of the monitored signal exceeds a threshold or...
US20060147061 Voltage supply circuit, power supply circuit, microphone unit using the same, and microphone unit sensitivity adjustment method  
A voltage supply circuit includes a power supply booster, an amplifier operating with a voltage generated by the power supply booster as a power supply voltage and supplying a bias voltage to a...
US20070269060 Structure and Method of Condenser Microphone Device for Skin-Contact Usage  
A number of improved structures and methods to a condenser microphone device are provided so that the condenser microphone device can be used in a skin-contact manner satisfactorily. According to...
US20090141909 Microphone Circuit  
Microphones are used in acoustically insulated masks, headsets, phones and personal digital assistants. Frequently, the microphone provides an input to speech recognition software. The working...
US20060062406 Voltage supply circuit and microphone unit comprising the same  
A voltage supply circuit comprises a voltage control circuit for outputting a bias voltage control signal according to a set value based on a bias voltage of a sensor and a voltage generation...
US20060067544 Method and apparatus for powering a listening device  
A device, such as a hearing aid, includes a microphone, an amplifier and a receiver (e.g., a speaker). A charge pump and voltage regulator circuit couples to a power source for the listening...
US20100208919 ELECTRET CONDENSER MICROPHONE FOR NOISE ISOLATION AND ELECTROSTATIC DISCHARGE PROTECTION  
An electret condenser microphone reinforces electrostatic discharge protection and noise isolation by adding a series of components in the electret condenser microphone. It is possible to block...
US20080089536 Microphone Microchip Device with Differential Mode Noise Suppression  
A system for processing a sound input to a MEMS microphone in a voice communication device, such as a cellular telephone. The system includes the microphone and a processing microchip. The...
US20080002841 Low-power high-PSRR current-mode microphone pre-amplifier system and method  
A low power high dynamic range microphone amplification system is disclosed. The system includes a current sensing amplifier for receiving an input current signal representative of auditory...
US20060023899 Wireless microphone with display function  
A wireless microphone with a display function comprises a microphone body, a display, a sound receiving unit and a memory module. The microphone body has a hand-held portion, and a frame portion....
US20060204019 Acoustic signal processing apparatus, acoustic signal processing method, acoustic signal processing program, and computer-readable recording medium recording acoustic signal processing program  
A frequency decomposer analyzes two amplitude data input from microphones to an acoustic signal input unit, and a two-dimensional data forming unit obtains a phase difference between the two...
US20060256981 Condenser microphone employing wide band stop filter and having improved resistance to electrostatic discharge  
A condenser microphone employs a wide band stop filter, having improved resistance to electrostatic discharge. This includes providing a condenser microphone used for a multi-band by comprising a...
US20060147062 Voltage supply circuit and microphone unit  
A voltage supply circuit includes a booster outputting a voltage boosted from a power supply voltage and an amplifier operating with a voltage output from the booster as a power supply and...
US20070297623 Apparatus and method to provide advanced microphone bias  
A circuit includes a differential amplifier having a first input for coupling to a first terminal of a microphone and a second input for coupling to a first terminal of a component having an...
US20050078841 Method and apparatus for resetting a buffer amplifier  
A reset circuit apparatus is used with a buffer amplifier circuit to provide a low impedance shunt for improving the settling characteristics of buffer amplifiers, particularly as used with...
US20060078134 In-line microphone filter  
An in-line microphone filter may include a housing and a filter circuit housed in the housing. A first connector at one end of the housing is connected to an input of the filter circuit and a...

Matches 1 - 50 out of 115 1 2 3 >