Abstract:
The Multiple Discriminant Analysis system described provides three parameters: (1) a Dynamic Force Factor (DFF) that characterizes the dynamic forces which act to reduce operational life of the bearing; (2) a Bearing Degradation Factor (BDF) that characterizes the actual condition of the rolling element bearing; and (3) a Life Expectancy Factor (LEF) that characterizes the Overall condition of the first two factors. Each factor is configured in scalar form, wherein readings range from. acceptable, to caution/degradation, to action required. DFF combines low frequency and high frequency dynamic forcing function discriminants. BDF combines, in this case, four powerful diagnostic bearing fault process discriminants, in a formulaic composition. The composition accurately describes the actual rolling element bearing condition indicating optimum or warning of a potential failure condition. The normally voluminous vibration data is compressed into three easily understood, yet highly informative numbers.
Abstract:
The present invention is directed to an acoustic vector sensor (200), specifically an underwater acoustic vector sensor. The acoustic vector sensor (200) contains three piezoelectric sensors (210) orthogonally mounted inside a rigid housing (302), where each of the piezoelectric sensors measures acoustic energy from one of the three different, orthogonal, axial directions (X, Y, and Z). The piezoelectric sensor contains a proof mass (202), a base (206), and a piezoelectric crystal sandwiched there between. The bonding surfaces of the proof mass and the base are preferably castellated; and the piezoelectric crystal is preferably a shear mode (d15) relaxor single crystal.
Abstract:
An arrangement is provided for creating a user detected vibration with a low mass actuator featuring a product cover and a low mass actuator. The product cover has two parts coupled by an elastic joint. The low mass actuator is coupled between the two parts, and responds to an actuation signal, for vibrating the two parts of the product cover in relation to one another. The elastic joint may be made from an adhesive layer. The low mass actuator may be a linear actuator. The arrangement may be a mobile phone. The actuation motor moves the two parts of the product cover a distance in a range of about 5-15 microns. The arrangement further comprises a battery for powering the actuation motor. The arrangement may include many different small products, including a wrist phone, amulet/pendulum/pen-phones, or small standard phones or accessories.
Abstract:
In one embodiment, a system (12) for monitoring exposure to impulse noise includes a sound-sensing device (16), such as a microphone (16) or other type of pressure transducer, operable to sense impulse noise, and a storage module (38) operable to store the waveform of the impulse noise sensed by the sound-sensing device (16). The sound-sensing device (16) desirably is operable to sense impulses that are greater than 146 dB, such as impulses created by construction machinery and firearms. The system also can include a processor operable to calculate one or more noise parameters of the impulse noise form the waveform, and a user interface program (26, 30, 32) operable to display (28) said one or more noise parameters selected by a user.
Abstract:
An acoustic channel is used for fault diagnosis, repair, and upgrades. Remote diagnosis uses self-test data encoded into sound waves. Repair data and upgrades are also encoded and transmitted as sound waves.
Abstract:
Included in the embodiments of the present invention is a system (20) to detect sound with sensor (22) to generate a corresponding sound signal and processing subsystem (30) to iteratively determine two or more values in accordance with a maximum likelihood function for evaluation of reverberation time. One of these values corresponds to a time constant parameter, and another of these values corresponds to a diffusive power parameter. An estimate representative of the reverberation time is further provided by subsystem (30) as a function of an order-statistics filter.
Abstract:
A method is disclosed for reconstructing complex wave attributes from limited view measurements of a scattering object. The method involves the analytic continuation of the Fourier transform of the object function into the area in which there is an absence of K-space coverage by requiring objects to be an even function. (It is assumed that physical objects are even functions, and it is this assumption that allows analytic continuation.) When the object function is not centered at the origin, the measurements are shifted to the origin prior to determining the analytic continuation and returned to their original location following analytic continuation.
Abstract:
The proposed invention is a portable multi-sound effect system providing a novel and unique solution for processing the electrical audio signals created by a guitar. The innovation according to the present invention is by attaching a signal processing unit along with a touch-sensitive dynamic control unit upon the front panel of the guitar's body for controlling and processing electrical signals produced by an amplified guitar, e.g. electric, bass, acoustic or classic guitar.
Abstract:
Noise and interference can be independently measured in a multiple user Orthogonal Frequency Division Multiplexing (OFDM) system (200). Co-channel interference is measured in a frequency hopping, multiple user, OFDM system by tracking the sub-carriers assigned to all users in a particular service area or cell (202). The composite noise plus interference can be determined by measuring the amount of received power in a sub-carrier whenever it is not assigned to any user in the cell. A value is stored for each sub-carrier in the system and the value of noise plus interference can be a weighted average of the present value with previously stored values. The noise component can be independently determined in a synchronous system. In the synchronous system, all users in a system may periodically be prohibited from broadcasting over a sub-carrier and the received power in the sub-carrier measured during the period having no broadcasts.
Abstract:
Controlling the volume of an audible alert associated with an instant messaging communications session includes rendering, on a first instant messaging user system, an instant messaging application user interface (405) for an instant messaging communications session involving at least a first instant messaging user and a second instant messaging user, receiving notification of an event (410) related to the instant messaging communications session, determining a characteristic of the event (420), accessing an audible alert to be rendered to signal existence of the event (425), adjusting based upon the determined characteristic of the event (430, 445, 460) a volume of the audible alert corresponding to the event (430, 450, 460), and rendering the audible alert to signal existence of the event (440, 455, 465).