Abstract: A conference microphone having a housing which encloses plural microphones is disclosed. Within the housing are a directional boundary microphone which includes three cardioid condenser capsules and an omnidirectional microphone. The housing has a rear edge wall and the directional boundary microphone includes an input end facing away from the rear edge wall of the housing. A lavaliere microphone is selectively connected to the housing via an auxiliary microphone input. A microprocessor is linked to a control panel for actuation by a user to control which of the directional boundary microphone, the omnidirectional microphone and the lavaliere microphone are active.

Abstract: A conferencing microphone system includes a conference microphone having a central housing member and a plurality of appendage housing members. Each of the plurality of appendage housing members includes a microphone housed therein, and each of the microphones includes a USB output connected to a USB Hub contained within the central housing member. The USB Hub includes a first USB input/output and a second USB input/output coupled thereto in a manner allowing connection of a plurality of conference microphones together.

Abstract: A conference microphone having a housing which encloses plural microphones is disclosed. Within the housing are a directional boundary microphone which includes three cardioid condenser capsules and an omnidirectional microphone. The housing has a rear edge wall and the directional boundary microphone includes an input end facing away from the rear edge wall of the housing. A lavaliere microphone is selectively connected to the housing via an auxiliary microphone input. A microprocessor is linked to a control panel for actuation by a user to control which of the directional boundary microphone, the omnidirectional microphone and the lavaliere microphone are active.

Abstract: A conferencing microphone system includes a conference microphone having a central housing member and a plurality of appendage housing members. Each of the plurality of appendage housing members includes a microphone housed therein, and each of the microphones includes a USB output connected to a USB Hub contained within the central housing member. The USB Hub includes a first USB input/output and a second USB input/output coupled thereto in a manner allowing connection of a plurality of conference microphones together.

Abstract: A blended passive microphone includes a dynamic first microphone, a dynamic second microphone, and a blending circuit adjusting outputs of the dynamic first microphone and the dynamic second microphone.

Abstract: A blended passive microphone includes a dynamic first microphone, a dynamic second microphone, and a blending circuit adjusting outputs of the dynamic first microphone and the dynamic second microphone.

Abstract: A USB ribbon microphone includes a ribbon diaphragm assembly, an amplification circuitry connected to the ribbon diaphragm assembly, an A/D converter connected to the amplification circuitry, and a USB output port connected to the A/D converter for selective connection with a USB input.

Abstract: A condenser microphone having a capsule with a cardioid pattern diaphragm on opposite sides of a back plate wherein each diaphragm is selectively activated via a switch to complete the audio circuit. The microphone employs two different diaphragm materials to produce two different sound reproduction characteristics. A first diaphragm produces a “warm and lush” sound output, while the second diaphragm produces a “bright and airy” sound output. The microphone includes the use of a pair of light emitting diodes located behind the grill indicating which capsule diaphragm is activated. The dual diaphragm arrangement is mounted on a standard microphone body and includes conventional electronics for connection to an associated piece of audio equipment producing phantom power.

Abstract: A condenser microphone having a capsule with a cardioid pattern diaphragm on opposite sides of a back plate wherein each diaphragm is selectively activated via a switch to complete the audio circuit. The microphone employs two different diaphragm materials to produce two different sound reproduction characteristics. A first diaphragm produces a “warm and lush” sound output, while the second diaphragm produces a “bright and airy” sound output. The microphone includes the use of a pair of light emitting diodes located behind the grill indicating which capsule diaphragm is activated. The dual diaphragm arrangement is mounted on a standard microphone body and includes conventional electronics for connection to an associated piece of audio equipment producing phantom power.

Abstract: A composition comprising A) an aqueous solution wherein the total content of 3-isothiazolinones is below 8 wt/%, and B) a stabilizing compound of the formula: [RxA—C6H2R1R2]y—Z wherein: R, R1 and R2 each independently represents hydrogen, a straight-chained or branched or cyclic alkyl radical, aralkyl or aryl; A is oxygen or nitrogen; Z represents ARx, R1, R2, alkoxy methylene, methylene or alkylidene; provided that when A is oxygen, x is 0 or 1 and when A is nitrogen, x is 1 or 2; and y is 1 or 2; exhibits improved stability.

Abstract: A slide mount has a frame defining a transparency receiving cavity and a transparency inlet for inserting a transparency into the transparency cavity. A spring capable of imparting a compressive spring force in the transparency receiving cavity is connected to the frame away from the transparency inlet. The spring engages a transparency inserted into the transparency receiving cavity to retain the transparency in the cavity by a compressive spring force.

Abstract: Method for the manufacture of bonded and self-bonded bodies from certain particulate ceramic oxides or carbides by heating a shaped mixture containing the particulate ceramic material and from 1 to 10 percent of its weight of an additive which includes an organic moiety and an inorganic moiety and is non-polymeric in respect of the inorganic moiety, and undergoes decomposition on being heated under atmospheric pressure, said additive being exemplified by such organic compounds as aluminum-dibutyl phosphate; tris-(trimethylsiloxy)-aluminum; and diethyl-(triethoxy-silyl)-vanadate, to produce, by the thermal decomposition, an inorganic residue which remains substantially non-volatile up to temperatures at which the particles of the particulate ceramic material become self-bonding; the mixture containing the particulate ceramic material and additive being fired to a temperature of about 200.degree. to about 600.degree.