Abstract: A microphone includes a housing. The microphone includes a windscreen coupled with the housing. The windscreen and the housing define a central volume. The microphone includes an audio module within the central volume. The audio module includes a receiver capsule, a carrier unit coupled with the receiver capsule, and a counterweight coupled with the carrier unit. The microphone includes a suspension element that is coupled with the housing and carrier unit to suspend the audio module within the central volume. The suspension element includes an inner body that contacts the carrier unit. The suspension element includes first and second flanges extending outward from the inner body. The first and second flange are fixedly coupled with the housing. A cross-section of the first and second flange includes an arched region that extends at least partially to an inner wall of the housing. The arched regions are oriented in opposite directions.

Abstract: A microphone includes a housing. The microphone includes a windscreen coupled with the housing. The windscreen and the housing define a central volume. The microphone includes an audio module within the central volume. The audio module includes a receiver capsule, a carrier unit coupled with the receiver capsule, and a counterweight coupled with the carrier unit. The microphone includes a suspension element that is coupled with the housing and carrier unit to suspend the audio module within the central volume. The suspension element includes an inner body that contacts the carrier unit. The suspension element includes first and second flanges extending outward from the inner body. The first and second flange are fixedly coupled with the housing. A cross-section of the first and second flange includes an arched region that extends at least partially to an inner wall of the housing. The arched regions are oriented in opposite directions.

Abstract: The present invention relates to a device for heating materials using microwaves, particularly applicable to the heating of ore products, which makes it possible to eliminate the use of fossil fuels (for example natural gas, coal, fuel oil, etc.) for generating heat for heating this type of material, rendering viable the use of microwaves for heating materials through a more efficient dispersion of the electromagnetic waves thereof. The present invention also relates to systems that make use of the heating device as set out above, and a method for heating using microwaves.

Abstract: A microphone system includes a microphone and a pre-amplification conditioning circuit configured within a housing and comprising a pair of matched JFETs configured in a differential pair with common-source configuration and, when biased, are operable to receive and amplify the differential microphone output signal. The microphone further includes a pair of BJTs configured as a complimentary feedback transistor pair with each of the pair of BJTs coupled in parallel to a corresponding one of the pair of matched JFETs, and a current sink coupled to the matched JFETs and corresponding emitter electrodes of the BJTs and operable to maintain a fixed total direct current through each of the matched JFETs and BJTs, which reduces the JFETs corresponding electrical load, reduces signal noise, and increases a maximum amplified microphone output signal level at the drains of the matched JFETs.

Abstract: A microphone includes a housing. The microphone includes a windscreen coupled with the housing. The windscreen and the housing define a central volume. The microphone includes an audio module within the central volume. The audio module includes a receiver capsule, a carrier unit coupled with the receiver capsule, and a counterweight coupled with the carrier unit. The microphone includes a suspension element that is coupled with the housing and carrier unit to suspend the audio module within the central volume. The suspension element includes an inner body that contacts the carrier unit. The suspension element includes first and second flanges extending outward from the inner body. The first and second flange are fixedly coupled with the housing. A cross-section of the first and second flange includes an arched region that extends at least partially to an inner wall of the housing. The arched regions are oriented in opposite directions.

Abstract: A microphone system includes a microphone and a pre-amplification conditioning circuit configured within a housing and comprising a pair of matched JFETs configured in a differential pair with common-source configuration and, when biased, are operable to receive and amplify the differential microphone output signal. The microphone further includes a pair of BJTs configured as a complimentary feedback transistor pair with each of the pair of BJTs coupled in parallel to a corresponding one of the pair of matched JFETs, and a current sink coupled to the matched JFETs and corresponding emitter electrodes of the BJTs and operable to maintain a fixed total direct current through each of the matched JFETs and BJTs, which reduces the JFETs corresponding electrical load, reduces signal noise, and increases a maximum amplified microphone output signal level at the drains of the matched JFETs.

Abstract: A microphone system includes a microphone and a pre-amplification conditioning circuit configured within a housing and comprising a pair of matched JFETs configured in a differential pair with common-source configuration and, when biased, are operable to receive and amplify the differential microphone output signal. The microphone further includes a pair of BJTs configured as a complimentary feedback transistor pair with each of the pair of BJTs coupled in parallel to a corresponding one of the pair of matched JFETs, and a current sink coupled to the matched JFETs and corresponding emitter electrodes of the BJTs and operable to maintain a fixed total direct current through each of the matched JFETs and BJTs, which reduces the JFETs corresponding electrical load, reduces signal noise, and increases a maximum amplified microphone output signal level at the drains of the matched JFETs.

Abstract: A microphone capsule assembly includes a first microphone capsule oriented to face a first direction that is parallel to a first plane, a second microphone capsule oriented to face in a direction opposite to the first direction, where a front face of the second microphone capsule is spaced a distance from a front face of the first microphone capsule in the first direction, a third microphone capsule oriented to face in a second direction that is at a first acute angle to the first direction when measured parallel to the first plane, and a fourth microphone capsule oriented to face in a third direction that is at a second acute angle to the first direction when measured parallel to the first plane, where the third and fourth microphone capsules are spaced a distance from the front face of the first microphone capsule in the first direction.

Abstract: The present invention provides a coil spring, in which a corresponding portion is provided at an end portion in a direction of a coil axis, the corresponding portion having a whole size in the direction of the coil axis of the plurality of wire materials adjacent to each other in the direction of the coil axis equal to a maximum value of a gap in the direction of the coil axis between wire materials adjacent to each other in the direction of the coil axis of the coil spring, a gap in the direction of the coil axis between the corresponding portion and a wire material adjacent to the corresponding portion on an inner side in the direction of the coil axis is smaller than a wire height in an active coil portion of the coil spring, and at the end portion of the direction of the coil axis, a gap in the direction of the coil axis between a portion extending around the coil axis from the corresponding portion to a distal end portion side of the wire material and a wire material adjacent to the portion on the inner

Abstract: A microphone capsule assembly includes a first microphone capsule oriented to face a first direction that is parallel to a first plane, a second microphone capsule oriented to face in a direction opposite to the first direction, where a front face of the second microphone capsule is spaced a distance from a front face of the first microphone capsule in the first direction, a third microphone capsule oriented to face in a second direction that is at a first acute angle to the first direction when measured parallel to the first plane, and a fourth microphone capsule oriented to face in a third direction that is at a second acute angle to the first direction when measured parallel to the first plane, where the third and fourth microphone capsules are spaced a distance from the front face of the first microphone capsule in the first direction.

Abstract: An earpiece for real-time audio processing of ambient sound includes an ear bud that provides passive noise attenuation to the earpiece such that exterior ambient sound is substantially reduced within an ear of a wearer, an exterior microphone that receives ambient sound and converts the received ambient sound into analog electrical signals, and an analog-to-digital converter that converts the analog electrical signals into digital signals representative of the ambient sounds. The earpiece further includes a digital signal processor that performs a transformation operation on the digital signals according to instructions received from a mobile device, the transformation operation transforms the digital signals into modified digital signals, a digital-to-analog converter that converts the modified digital signals into modified analog electrical signals, and a speaker that outputs the modified analog electrical signals as audio waves.

Abstract: Ambient sound is converted into digital signals. A processor performs active noise cancellation and/or a transformation operation that is distinct from the active noise cancellation on the digital signals. The active noise cancellation and the transformation operation transform the digital signals into modified digital signals. The modified digital signals are converted into modified analog signals. The modified analog signals are outputted as audio waves. An interior microphone is configured to output an output signal to the processor in response to receiving the modified analog signals. In response to receiving the output signal from the interior microphone, the processor is configured to determine whether the modified digital signals produce desired audio waves.

Abstract: The present invention provides a coil spring, in which a corresponding portion is provided at an end portion in a direction of a coil axis, the corresponding portion having a whole size in the direction of the coil axis of the plurality of wire materials adjacent to each other in the direction of the coil axis equal to a maximum value of a gap in the direction of the coil axis between wire materials adjacent to each other in the direction of the coil axis of the coil spring, a gap in the direction of the coil axis between the corresponding portion and a wire material adjacent to the corresponding portion on an inner side in the direction of the coil axis is smaller than a wire height in an active coil portion of the coil spring, and at the end portion of the direction of the coil axis, a gap in the direction of the coil axis between a portion extending around the coil axis from the corresponding portion to a distal end portion side of the wire material and a wire material adjacent to the portion on the inner

Abstract: There is disclosed a noise reducing headphone including a headphone housing, a microphone generate an ambient audio signal representative of ambient noise, a processor to generate an anti-sound signal based on the ambient audio signal. A first speaker is disposed within the headphone housing to convert the anti-sound signal into anti-sound. A second speaker is disposed within the headphone housing to convert an audio input signal into high fidelity sound. At least one characteristic of the second speaker is different from a corresponding characteristic of the first speaker.

Abstract: Ambient sound is converted into digital signals. A processor performs active noise cancellation and/or a transformation operation that is distinct from the active noise cancellation on the digital signals. The active noise cancellation and the transformation operation transform the digital signals into modified digital signals. The modified digital signals are converted into modified analog signals. The modified analog signals are outputted as audio waves. An interior microphone is configured to output an output signal to the processor in response to receiving the modified analog signals. In response to receiving the output signal from the interior microphone, the processor is configured to determine whether the modified digital signals produce desired audio waves.

Abstract: An earpiece for real-time audio processing of ambient sound includes an ear bud that provides passive noise attenuation to the earpiece such that exterior ambient sound is substantially reduced within an ear of a wearer, an exterior microphone that receives ambient sound and converts the received ambient sound into analog electrical signals, and an analog-to-digital converter that converts the analog electrical signals into digital signals representative of the ambient sounds. The earpiece further includes a digital signal processor that performs a transformation operation on the digital signals according to instructions received from a mobile device, the transformation operation transforms the digital signals into modified digital signals, a digital-to-analog converter that converts the modified digital signals into modified analog electrical signals, and a speaker that outputs the modified analog electrical signals as audio waves.

Abstract: An earpiece for real-time audio processing of ambient sound includes an ear bud that provides passive noise attenuation to the earpiece such that exterior ambient sound is substantially reduced within an ear of a wearer, an exterior microphone that receives ambient sound and converts the received ambient sound into analog electrical signals, and an analog-to-digital converter that converts the analog electrical signals into digital signals representative of the ambient sounds. The earpiece further includes a digital signal processor that performs a transformation operation on the digital signals according to instructions received from a mobile device, the transformation operation transforms the digital signals into modified digital signals, a digital-to-analog converter that converts the modified digital signals into modified analog electrical signals, and a speaker that outputs the modified analog electrical signals as audio waves.

Abstract: Non-occluding active noise suppression apparatus and methods are disclosed. A housing includes an inlet to admit ambient sound and an outlet to output personal sound to the ear of a user. An acoustic path and an electronic path are provided from the inlet to the outlet within the housing. For a predetermined frequency range, a phase difference between the acoustic path and the electronic path is substantially 180 degrees.

Abstract: To provide a coil spring having excellent fatigue resistance. Disclosed is a coil spring made of steel, including (in % by mass, the same shall apply for a chemical composition): C: 0.40 to 0.70%; Si: 1.50 to 3.50%; Mn: 0.30 to 1.50%; Cr: 0.10 to 1.50%; V: 0.50 to 1.00%, and Al: 0.01% or less (excluding 0%), with the balance being iron and inevitable impurities, wherein an average crystal grain size number of prior austenite crystals in a depth of 0.3 mm from a surface is 11.0 or more, while a difference in grain size number between the respective prior austenite crystals is in a range of less than 3 from a grain size number observed at the maximum frequency, and wherein a carburized layer is provided in a depth of 0.30 to 1.00 mm from the surface, while an average Vickers hardness is 600 or higher at a position in a depth of (¼)×diameter in the depth direction from the surface.