Abstract: An acoustic signal is received from a first user. The acoustic signal of the first user includes a verbal utterance related to the first user. A set of one or more non-verbal sensor readings may be detected from a set of one or more sensors of a wearable device. The wearable device is worn by the user concurrent with the verbal utterance. A verbal distortion factor may be determined based on an acoustic adjustment model and in response to the set of non-verbal sensor readings. An adjusted verbal utterance related to the first user may be generated. The adjusted verbal utterance may be generated from the verbal utterance and based on the verbal distortion factor. The adjusted verbal utterance may be provided to a voice output.

Abstract: A system for measuring physiological parameters includes a housing mounted to an exterior body surface of a user. The system includes at least a sensor attached to the housing and contacting the exterior body surface at a locus on a head of the user, the at least a sensor configured to detect at least a physiological parameter and transmit an electrical signal as a result of the detection. The system includes an alert circuit communicatively coupled to the at least sensor, the alert circuit configured to receive at least a signal from the at least a sensor, generate an alarm as a function of the at least a signal, and to transmit the alarm to a user-signaling device communicatively coupled to the alert circuit.

Abstract: Disclosed is a modular voice amplification system for a protective mask that allows connection of a single amplifier assembly to masks of varying configurations through minimal adjustment of the system. Adapter plates in the form of mounting brackets are provided, each of which is configured for attachment to the single amplifier assembly, but is individually configured for attachment to protective masks of varying configurations through differing attachment mechanisms provided on each adapter plate.

Abstract: Disclosed, in general, are devices that provide an air-tight chamber over a sound source while absorbing all fields of sounds from the sound source. In general, the devices feature: an anechoic chamber that is configured to receive a sound source in an air-tight manner; and an anechoic channel that is in fluid communication with the ambient atmosphere. Suitably, the anechoic chamber is adapted to capture air containing sound energy generated by the sound source, and distribute the air about an internal surface area on the inside of the chamber, wherein the internal surface area is sufficiently large to dampen or otherwise absorb the sounds energy. Preferably, the air is directed from the anechoic chamber through an anechoic channel extending therefrom to the ambient to further dampen or absorb the sound energy. In one configuration, the outer wall of the apparatus is configured to reflect ambient sounds.

Abstract: A portable electrical appliance comprises an audio signal source, a power supply module having a housing external to the portable electrical appliance for providing power to the electronic appliance having, a power converter for providing DC power to at least the portable electrical appliance, a speaker for generating sound and audio processing means for manipulating audio signals from the audio signal source, wherein the power converter, audio processing means and speaker are mounted within the housing, and communication means for coupling the audio signal to the processing means. The communication means is able to be wireless or wired.

Abstract: A loudspeaker comprises a horn waveguide having a waveguide surface, and a transducer located in, or adjacent to, a throat of the horn waveguide. The transducer has a substantially rigid convex dome-shaped acoustically radiating surface. A horn angle subtended between a longitudinal axis of the horn waveguide and the waveguide surface at the throat of the horn, is in the range 20 to 60 degrees. An intersection angle subtended between a plane tangential to the dome shape of the acoustically radiating surface and a plane tangential to the waveguide surface at a point where the dome shape or an extrapolation of the dome shape meets the waveguide surface or an extrapolation of the waveguide surface, is in the range 85 to 110 degrees.

Abstract: A receiver-transmitter for communication equipment is composed of a yoke iron, a magnet and a magnetic pole piece. The yoke iron has a recess in which the magnet and the magnetic pole piece are located. The recess is provided in the bottom thereof with a plurality of locating columns, whereas the magnetic pole piece is provided with a plurality of locating slots. The magnet is securely located in a locating space which is confined by the locating columns. The magnetic pole piece is located at the top of the magnet such that the locating slots of the magnetic pole piece are engaged with the locating columns of the recess.

Abstract: In an electroacoustic transducer (1) having a diaphragm (17) and a voice coil (16) connected to the diaphragm (17) in the area of the rear volume (HV) and cooperating with a magnet system (9), and including a substantially annular closing member (30) for closing the rear volume (HV), the closing member (30) has an annular body (38) and a ring projection (39), which projects obliquely from the annular body (38) along its entire circumference and is movable against spring action, at least one passage (34, 35, 36, 37) of the closing member (30), this passage having been provided in order to realize an acoustic friction between the rear volume (HV) and the acoustic free space surrounding the transducer (1), terminating in the annular contact surface (32) of the annular body (38), this annular contact surface extending transversely to the transducer axis (2).

Abstract: The present invention provides a method (600) and device (400) for minimizing wind-induced noise in a microphone. The device includes: a housing (412) having a recessed area shaped to accommodate a microphone transducer (410); the microphone transducer (410), situated within the recessed area such that a thin film situated over the microphone transducer is flush with/overlaying a top of the recessed area and affixed at least to the sides of the recessed area, for receiving sound; and the thin film (402) has at least one aperture (404, . . . 406) for allowing sound to impinge on the microphone transducer (410), and has a minimal thickness that maintains structural integrity.

Abstract: A radiotelephone having an acoustical wave guide for channeling and directing sound energy into a microphone forming a part of the radiotelephone. The wave guide includes an elongated tube structure that varies in cross-sectional area from an inlet end to an outlet end thereof. More particularly, the wave guide is formed by a wall structure that includes portions that assume a wave configuration. This wave configuration gives rise to the varying cross-sectional area that is repeatedly found between the inlet and outlet end portions of the wave guide. This wave type configuration for the wave guide forms an acoustical low-pass filter that propagates and transmits non-resonant low frequencies in the range of 300 Hz to 3,000 Hz.

Abstract: A hermetically sealed condenser microphone including an outer sealing diaphragm hermetically sealing an electroacoustic transducer within a case from the outside environment. The sealing diaphragm passes sound undiminished through an underlying intervening air space to a second active diaphragm of the electroacoustic transducer. Specifically, the case has a hollow interior, a sealed end and an open end. The electroacoustic transducer is disposed within the hollow interior of the case, and the sealing diaphragm disposed over the top of the open end of the case such that the hollow interior of the case is completely sealed. An acoustic signal first impinges upon the sealing diaphragm causing deflections therein which in turn recreate the acoustic signal undiminished in the air space within the case between the sealing diaphragm and the active diaphragm.