Abstract: A condenser microphone package includes: a condenser microphone unit including a diaphragm and a back plate; a printed circuit board; a conductive connector sandwiched between and cooperating with the condenser microphone unit and the printed circuit board to form a stack; and a metal can encasing the stack and having a first end wall that is formed with a plurality of sound holes, and that abuts against the condenser microphone unit, and a second end wall that is disposed opposite to the first end wall, that abuts against the printed circuit board, and that cooperates with the first end wall to press the printed circuit board toward the condenser microphone unit.

Abstract: A method for making condenser microphones includes: forming a fixed electrode layer structure of a plurality of fixed electrode units; forming a sacrificial layer of a plurality of sacrificial units on one side of the fixed electrode layer structure; forming a diaphragm layer structure of a plurality of diaphragm units on the sacrificial layer; forming a patterned mask layer on an opposite side of the fixed electrode layer structure opposite to the sacrificial layer; forming a plurality of etching channels, each of which extends through the patterned mask layer and the fixed electrode layer structure; removing a portion of the sacrificial layer of each of the sacrificial units so as to form a spacer between a respective one of the fixed electrode units and a respective one of the diaphragm units; and removing the patterned mask layer.

Abstract: A method for making condenser microphones includes: forming a fixed electrode layer structure of a plurality of fixed electrode units; forming a sacrificial layer of a plurality of sacrificial units on one side of the fixed electrode layer structure; forming a diaphragm layer structure of a plurality of diaphragm units on the sacrificial layer; forming a patterned mask layer on an opposite side of the fixed electrode layer structure opposite to the sacrificial layer; forming a plurality of etching channels, each of which extends through the patterned mask layer and the fixed electrode layer structure; removing a portion of the sacrificial layer of each of the sacrificial units so as to form a spacer between a respective one of the fixed electrode units and a respective one of the diaphragm units; and removing the patterned mask layer.

Abstract: A method for making a diaphragm unit of a condenser microphone includes the steps of: forming a liftoff layer on a substrate; forming an insulator diaphragm film on the liftoff layer; and removing the liftoff layer from the diaphragm film and the substrate so as to separate the diaphragm film from the substrate.

Abstract: A condenser microphone includes a condenser housing defining an inner space therein, and a variable gap condenser enclosed in the condenser housing. The variable gap condenser includes an insulating substrate, a conductive fixed back plate mounted securely on the insulating substrate, a diaphragm unit movable relative to the back plate in a first transverse direction relative to the back plate, and a spacer unit interposed between and in contact with the back plate and the diaphragm unit so as to define a variable gap thereamong. The spacer unit defines at least an air passage that extends in a second transverse direction relative to the first transverse direction and that is in spatial communication with the inner space and the variable gap.

Abstract: A switching unit for a microphone includes a slider-mounting member, a slider mounted slidably on the slider-mounting member and having an operating element, and a slider-positioning mechanism mounted on the slider-mounting member and defining an elongated slot for extension of the operating element therethrough. The slider-positioning mechanism includes a resistance-providing member and two retaining members. The operating element is in sliding contact with the resistance-providing member such that the resistance-providing member provides a resistance to the operating element when the slider is disposed at a non-retaining position. The operating element is retained releasably by one of the retaining members when the slider is moved to a retaining position.

Abstract: A microphone includes a tubular housing extending along a longitudinal axis, a perforated cover mounted on a front open end of the housing and having a circular cross section along a plane transverse to the longitudinal axis, and a positioning ring sleeved on the perforated cover and having an outer peripheral surface that is formed alternately with a plurality of rolling sections and positioning sections. Each of the positioning sections has two opposite ends connected respectively to two adjacent ones of the rolling sections, and an intermediate part disposed between and indented relative to the opposite ends.

Abstract: A microphone includes a tubular housing extending along a longitudinal axis, a perforated cover mounted on a front open end of the housing and having a circular cross section along a plane transverse to the longitudinal axis, and a positioning ring sleeved on the perforated cover and having an outer peripheral surface that is formed alternately with a plurality of rolling sections and positioning sections. Each of the positioning sections has two opposite ends connected respectively to two adjacent ones of the rolling sections, and an intermediate part disposed between and indented relative to the opposite ends.

Abstract: A microphone pick-up device includes an air chamber unit disposed posteriorly of an annular cap body. A pick-up unit generates an acoustic signal in response to detected sound, and includes a yoke mounted in a front portion of the cap body, a voice coil disposed around a washer and a magnet within the yoke, a diaphragm for covering the yoke and connected to the voice coil, a sound regulating cloth attached to and disposed to surround the cap body, and a sound regulating paper disposed between a rear portion of the cap body and the air chamber unit and covering an air passage unit of the cap body. A signal filter is disposed between the rear portion of the cap body and the air chamber unit, is disposed posteriorly of the sound regulating paper, and is coupled to the voice coil for filtering noise in the acoustic signal.

Abstract: A condenser microphone includes a housing having a bottom wall that is formed with a recess which is defined by a recess-defining wall. A condenser is disposed in the housing, defines a variable gap chamber, and covers the recess. The condenser includes a back plate that is in the form of a metal plate which is formed with a plurality of through-holes and which cooperates with the recess-defining wall to define a closed air chamber in fluid communication with the gap chamber through the through-holes.

Abstract: A condenser microphone includes a condenser housing defining an inner space therein, and a variable gap condenser enclosed in the condenser housing. The variable gap condenser includes an insulating substrate, a conductive fixed back plate mounted securely on the insulating substrate, a diaphragm unit movable relative to the back plate in a first transverse direction relative to the back plate, and a spacer unit interposed between and in contact with the back plate and the diaphragm unit so as to define a variable gap thereamong. The spacer unit defines at least an air passage that extends in a second transverse direction relative to the first transverse direction and that is in spatial communication with the inner space and the variable gap.

Abstract: A switching unit for a microphone includes a slider-mounting member, a slider mounted slidably on the slider-mounting member and having an operating element, and a slider-positioning mechanism mounted on the slider-mounting member and defining an elongated slot for extension of the operating element therethrough. The slider-positioning mechanism includes a resistance-providing member and two retaining members. The operating element is in sliding contact with the resistance-providing member such that the resistance-providing member provides a resistance to the operating element when the slider is disposed at a non-retaining position. The operating element is retained releasably by one of the retaining members when the slider is moved to a retaining position.

Abstract: A condenser microphone includes a housing having a bottom wall that is formed with a recess which is defined by a recess-defining wall. A condenser is disposed in the housing, defines a variable gap chamber, and covers the recess. The condenser includes a back plate that is in the form of a metal plate which is formed with a plurality of through-holes and which cooperates with the recess-defining wall to define a closed air chamber in fluid communication with the gap chamber through the through-holes.

Abstract: A microphone includes a housing, a plurality of terminals, and a variable resistance switch. The switch includes a resistance member having opposite first and second ends connected to respective ones of the terminals. A conductive member has one end connected to a respective one of the terminals. A slide member includes a wiper that is simultaneously and constantly in sliding contact with the resistance member and the conductive member so as to complete a circuit through the terminals, the conductive member, and the resistance member. The wiper is slidable over the conductive member and the resistance member so as to linearly vary the resistance in the circuit.

Abstract: A microphone includes a housing, a plurality of terminals, and a variable resistance switch. The switch includes a resistance member having opposite first and second ends connected to respective ones of the terminals. A conductive member has one end connected to a respective one of the terminals. A slide member includes a wiper that is simultaneously and constantly in sliding contact with the resistance member and the conductive member so as to complete a circuit through the terminals, the conductive member, and the resistance member. The wiper is slidable over the conductive member and the resistance member so as to linearly vary the resistance in the circuit.

Abstract: A directional microphone includes a yoke, and a magnet and a washer disposed in the yoke. An annular cap body encloses a surrounding wall portion of the yoke, and has a plurality of first air passages extending from a front portion through a rear portion of the cap body and are angularly spaced apart from each other, and second air passages formed in the front portion and having radial first sections and axial second sections. A voice coil is disposed around the washer and the magnet within the yoke. A diaphragm is disposed adjacent to the front portion of the cap body and is connected to the voice coil. A protective cover has an annular surrounding wall coupled to the front portion of the cap body without covering the second air passages, and a perforated cover plate disposed proximate to the diaphragm. An air chamber unit is coupled to the rear portion of the cap body and is in communication with the first air passages.

Abstract: A holder for an acoustic pick-up device includes a base and a neck strap. The base is adapted for mounting of the pick-up device thereon, and is formed with a strap fastener. The strap fastener includes a pair of tubular strap sleeves that define a pair of strap holes. The neck strap has two ends that are extended respectively through the holes in the strap sleeves. The neck strap is gripped fittingly and is compressible in radial directions by the strap sleeves. The base can be forced to move along the length of the neck strap when adjusting the position of the base relative to the neck strap.