| Patent application number | Description | Published |
|---|
| 20080212792 | MICROPHONE APPARATUS - A microphone apparatus is obtained capable of preventing howling effectively, while having no time difference between a timing of voice utterance to a microphone and a timing of sound emission from a speaker and having simple and low-cost physical and electrical configurations. There are provided microphone units or microphones disposed at locations with the same acoustic conditions, and switching units disposed corresponding to the microphone units or microphones, respectively, for switching sequentially an audio signal transformed in each of the microphone units or microphones to generate an output signal. The switching units may switch sequentially the audio signal transformed in the microphone unit or microphone at an shorter time interval than a time period from a time point the microphone unit or microphone is turned on to a time point an output thereof grows to reach a maximum level by howling. | 09-04-2008 |
| 20080232629 | Boundary microphone - In a boundary microphone, a high-frequency current caused by extraneous electromagnetic waves is prevented from flowing into a microphone case via a microphone cord that is drawn into the microphone case. A portion in which the microphone cord | 09-25-2008 |
| 20090116670 | RIBBON MICROPHONE AND RIBBON MICROPHONE UNIT - To obtain a ribbon microphone unit, which makes the tension of a diaphragm adjustable by configuring a ribbon diaphragm assembly that is detachable to a magnetic-circuit assembly including a magnet, and which further allows a user side to carry out the maintenance by replacing the ribbon diaphragm assembly; a ribbon microphone unit comprises: a magnetic-circuit assembly including a magnet; and a ribbon diaphragm, wherein the ribbon diaphragm, together with a substrate having a circuit pattern formed on both ends thereof, a metal fitting for crimping an end portion of the ribbon diaphragm to the circuit pattern, and a screw for crimping the metal fitting toward the substrate, constitute a diaphragm assembly, and wherein the diaphragm assembly is secured to the magnetic-circuit assembly. | 05-07-2009 |
| 20090141914 | RIBBON MICROPHONE AND RIBBON MICROPHONE UNIT - A ribbon microphone unit includes: an electrode lead portion for conducting an electric signal which a ribbon diaphragm generates cooperating with a magnet; a tightening member for securing the ribbon diaphragm; and a screw for crimping the tightening member, wherein the tightening member is crimped via the ribbon diaphragm and the electrode lead portion by the screw, and wherein the ribbon diaphragm includes a portion sandwiched by the tightening member, and the portion is formed in an irregular shape in the thickness direction. | 06-04-2009 |
| 20090208038 | RIBBON FOR RIBBON MICROPHONE, MANUFACTURING METHOD OF THE SAME, AND RIBBON MICROPHONE - A ribbon for a ribbon microphone having a magnet forming a magnetic gap, the ribbon which is arranged in the magnetic gap and is vibrated by a sound wave, an electrode for outputting an electric signal which is generated when the ribbon vibrates in the magnetic gap, and a frame for holding the magnet and the electrode; the ribbon has patterns of a large waveform which are formed so as to progress in a longitudinal direction of the ribbon and are formed so that ridge lines face a direction which perpendicularly crosses the longitudinal direction of the ribbon, and small patterns which are smaller than the patterns of the waveform and are formed along the longitudinal direction of the ribbon. | 08-20-2009 |
| 20090262968 | Electrical connector and method for manufacturing the same and condenser microphone - There is provided an electrical connector especially suitable for a condenser microphone, which connector is, though being small in size, provided with an electromagnetic wave shielding unit that is capable of easily being installed in the connector and is equivalent to an EMI core. The electrical connector includes a cylindrical connector housing | 10-22-2009 |
| 20090296963 | Diaphragm for condenser microphone, method for manufacturing the same, and condenser microphone - The adsorption stability with respect to a fixed pole is increased while the low frequency response of a diaphragm is improved especially in an electret condenser microphone. In a diaphragm | 12-03-2009 |
| 20100098282 | VARIABLE DIRECTIONAL MICROPHONE UNIT AND VARIABLE DIRECTIONAL MICROPHONE - A variable directional microphone unit includes two capacitor elements. Each of the two capacitor elements has: a back plate formed on one side of an insulating plate to be insulated from a back plate of the other capacitor element; and a vibrating plate disposed to face the back plate with a certain amount of space therebetween, in which a polarization voltage is applied between each of the back plates and the vibrating plates so that an electroacoustically transduced signal is obtainable from each of the back plates. The variable directional microphone unit is characterized in that the two vibrating plates of the two capacitor elements are acoustically connected in series as a plurality of holes are formed on both of the back plates. | 04-22-2010 |
| 20100195850 | MICROPHONE - A microphone includes: a needle-like electrode; an opposite electrode facing the needle-like electrode; a discharge section formed between the needle-like electrode and the opposite electrode; a high-frequency oscillating circuit including the discharge section and producing a high-frequency discharge at the discharge section; a sound wave introduction section through which a sound wave is introduced to the discharge section; and a modulated signal extracting unit that extracts a signal modulated, according to the sound wave oscillated by the high-frequency oscillating circuit and introduced to the discharge section. The high-frequency discharge is produced at the discharge section as the high-frequency oscillating circuit performs high-frequency oscillation with the discharge section between the needle-like electrode and the opposite electrode as a return path, and a frequency modulation is performed as an equivalent impedance of the discharge section changes according to the sound wave. | 08-05-2010 |
| 20100272291 | CAPACITOR MICROPHONE AND IMPEDANCE CONVERTER THEREFOR - An impedance converter for a capacitor microphone includes: a vacuum tube that receives an output signal from a capacitor microphone unit through a grid and with which the signal is output as an output from a cathode follower; an FET in cascade connection with the vacuum tube and that defines a current flowing in the vacuum tube; and a bias circuit that applies a bias voltage to the grid of the vacuum tube. The bias circuit includes: a first diode and a second diode that apply the bias voltage to the grid of the vacuum tube; the first diode and the second diode being connected in inverse parallel; and a bias resistor for applying the bias voltage at a constant level to the grid of the vacuum tube via the first diode or the second diode. | 10-28-2010 |
| 20100296670 | Impedance Converter For Microphone and Microphone - Vacuum tubes that receive output signals from microphone units through grids and with which the signals are output as outputs from cathode followers; FETs in cascade connection with the corresponding vacuum tubes and that define currents flowing in the vacuum tubes; and bias circuits that apply a bias voltage to the grids of the corresponding vacuum tubes are included. Pairs of such vacuum tubes, FETs, and fixed bias circuits are each symmetrically connected so that a balanced signal can be output from two cathode followers, and an adjuster is provided between the pair of fixed bias circuits, the adjuster adjusts currents flowing in the pair of vacuum tubes to achieve a balanced output. | 11-25-2010 |
| 20100322439 | CAPACITOR MICROPHONE UNIT AND CAPACITOR MICROPHONE - A diaphragm adhering to a diaphragm holder and vibrating upon receiving a sound wave; and a fixed pole facing the diaphragm with a space from the diaphragm to form a capacitor with the diaphragm are included. A surface of the diaphragm holder adhering to the diaphragm is flat polished. The fixed pole is made of a flexible material. A surface of the fixed pole facing the diaphragm holder is pressure welded along the flat polished surface of the diaphragm holder. | 12-23-2010 |
| 20100322450 | BOUNDARY MICROPHONE - A boundary microphone includes: a metal mesh; a base made of metal; a cover made of metal on which a plurality of holes through which a sound wave is passed is formed; and a microphone unit that is installed on the base and converts sound into an electrical signal. The metal mesh is welded onto the base with a metal material of the base entering a space of the metal mesh. The microphone unit is covered by the metal mesh. | 12-23-2010 |
| 20100329483 | CAPACITOR MICROPHONE - Diaphragms of a plurality of capacitor microphone units are arranged in the same plane and the capacitor microphone units are connected in series to make an output from an impedance converter connected to one capacitor microphone unit drives a ground side of another capacitor microphone unit connected to the impedance converter. | 12-30-2010 |
| 20110038501 | RIBBON MICROPHONE UNIT AND RIBBON MICROPHONE - A ribbon microphone unit includes a permanent magnet that forms a magnetic field and a ribbon diaphragm that is disposed in the magnetic field and vibrates upon receiving a sound wave. An elastic layer made of synthetic resin is formed at least at a portion of the ribbon diaphragm, the portion vibrating upon receiving the sound wave. Preferably, the ribbon diaphragm is formed into triangular waves with the portion vibrating upon receiving sound waves being alternately folded along lines in a width direction across the entire length. The elastic layer may be formed on one or both surfaces of the ribbon diaphragm and may be provided only at both side ends of the ribbon diaphragm. | 02-17-2011 |
| 20110069842 | STEREO MICROPHONE - A stereo microphone includes: a supporter that is made of an elastic material and fixes two unidirectional microphone units at certain angles; and a moving part that applies external force to a part of the supporter by being operated. An angle formed by main axes of the respective unidirectional microphone units is changed by deformation of the supporter by the external force. | 03-24-2011 |
| 20110086547 | CONNECTOR FOR CAPACITOR MICROPHONE - A compression sleeve is combined to a microphone cable. A small-diameter cylindrical portion is compressed on the outer peripheral side of a folded portion of a shielding cable. Thus, the compression sleeve is electrically connected to the shielding cable. A large-diameter cylindrical portion covers a connection portion between a connector and the microphone cable. The large-diameter cylindrical portion and a connector housing are fitted with each other. A bush covers the compression sleeve. Inner periphery of the connector housing is in contacts and presses the outer periphery of the large-diameter cylindrical portion. The large-diameter cylindrical portion has a flange on the outer surface. The flange contacts and presses an end of the connector housing on closer to the microphone cable by the shoulder portion of the bush. | 04-14-2011 |
| 20110103594 | STEREO MICROPHONE UNIT AND STEREO MICROPHONE - A stereo capacitor microphone unit includes: two unidirectional microphone units integrally formed with respective fixed electrodes of the unidirectional microphone units facing each other; and an insulating spacer that is interposed between the fixed electrodes and provided with a gap formed at a portion of an outer periphery towards radial direction. The gap communicates fixed electrode rear spaces of the respective unidirectional microphone units with an external space to serve as a common rear acoustic terminal for the unidirectional microphone units. | 05-05-2011 |
| 20110142265 | CAPACITOR MICROPHONE UNIT AND CAPACITOR MICROPHONE - The present invention relates to a capacitor microphone unit including a diaphragm, a fixed electrode that is arranged opposite to the diaphragm with a space provided between the diaphragm and the fixed electrode so that a capacitor is formed between the diaphragm and the fixed electrode, an insulating base that is disposed on a rear side of the fixed electrode and supports the fixed electrode, and a ring-shaped acoustic resistance material that is disposed on a front side of the insulating base, all of which are incorporated in a unit casing. A skin layer is formed on at least one of a front side and a rear side of the acoustic resistance material, and the skin layer has a higher density than that inside the acoustic resistance material, whereby acoustic resistance can be readily controlled. | 06-16-2011 |
| 20110150246 | CAPACITOR MICROPHONE - A capacitor microphone includes: a capacitor microphone unit including a diaphragm that vibrates upon receiving sound waves and a fixed electrode arranged opposite to the diaphragm with a space therebetween; and a polarization voltage generating circuit that generates polarization voltage to be applied across the diaphragm and the fixed electrode. The polarization voltage generating circuit includes an oscillating circuit that alternately turns on and off DC power, coils to boost the voltage of the power alternately turned on and off, and a DC boosting circuit including a rectifying circuit that rectifies the boosted voltage. The coils are formed of two inductors that are electromagnetically coupled and are provided with an electromagnetic coupling adjusting unit with which the level of electromagnetic coupling between the two inductors is adjusted to adjust the polarization voltage. | 06-23-2011 |
| 20110158451 | Close-Talking Capacitor Microphone - A close-talking capacitor microphone includes: a capacitor microphone unit including a diaphragm, a diaphragm holder to which the diaphragm is attached, a fixed electrode, a printed circuit board, an insulating base on the rear side of the fixed electrode, and a unit casing; a microphone casing fixing the capacitor microphone unit therein and provided with a sound-wave guidance hole; and a shielded wire through which a sound signal is communicated. The unit casing has an opening on a peripheral side surface at a portion between the front side of the printed circuit board and the rear side of the fixed electrode with regard to the height direction. The unit casing has a space that communicates the opening to the printed circuit board. The shielded wire is inserted through the opening on the peripheral side surface of the unit casing to be connected to the printed circuit board. | 06-30-2011 |
