3563results about "Testing circuits" patented technology

The present invention is directed to a method and system for automatic calibration of an acoustic system. The acoustic system may include a source A / V device, calibration computing device, and multiple rendering devices. The calibration system may include a calibration component attached to each rendering device and a source calibration module. The calibration component on each rendering device includes a microphone. The source calibration module includes distance and optional angle calculation tools for automatically determining a distance between the rendering device and a specified reference point upon return of the test signal from the calibration component.

An alarm processor suppresses alarms when a physiological parameter is below a predetermined value but recovering toward a normal range.

Some embodiments of the invention may operate to measure a first output performance metric value associated with a current operation frequency of a processor, to set a trial operation frequency of the processor, and to measure a second output performance metric value associated with the trial operation frequency. If the measured performance variation is less than a specified acceptable performance variation, the trial operation frequency may be selected as a subsequent determined operation frequency.

Some embodiments of the invention may operate to measure a first output performance metric value associated with a current operation frequency of a processor, to set a trial operation frequency of the processor, and to measure a second output performance metric value associated with the trial operation frequency. If the measured performance variation is less than a specified acceptable performance variation, the trial operation frequency may be selected as a subsequent determined operation frequency.

An automatic hold switch is disclosed. The automatic hold switch provides a means for automatically switching a hold feature on and off. When the hold feature is on, one or more input devices of a portable electronic device are disabled or prevented from providing input signals. When the hold feature is off, one or more input devices of a portable electronic device are enabled or allowed to provide input signals. Because the user no longer has to manually control the hold feature, the number of actions that need to be taken by the user is reduced. In one example, the automatic hold switch is embodied with light sensors that detect when the device is in a dark environment and when the device is in a light environment. A dark environment indicates to the portable electronic device that the user wishes not to input and therefore the hold feature is turned on. A lighted environment indicates to the portable electronic device that the user wishes to input and therefore the hold feature is turned off.

A signal waveform analysis method includes: determining a trend component of an object signal by applying a zero-phase filter to the object signal; determining an oscillatory component of the object signal by removing the trend component from the object signal; determining a wavelet scalogram by performing a wavelet analysis on the oscillatory component; and determining an oscillation period of the object signal with which the wavelet scalogram indicates a maximum. The signal waveform analysis method is employed to evaluate vehicle dynamic characteristics.

This invention relates to bulk testing of voice messaging applications by playing back an interaction from a recorded script. During development of a voice response system and application it is necessary to simulate a plurality of calls to the system so that the performance under strain can be monitored. Such a simulation can be performed by a bulk call generator which makes real telephone calls to the IVR through a private branch switch. However with bulk call testing some problems occur which rigorous functional and / or performance testing does not find. This is because real callers behave in unpredictable ways which were not expected or assumed by the creators of the functional and / or performance tests. Accordingly there is provided a test system, method and computer program product for testing a voice application in an interactive voice response (IVR) system, said method comprising: acquiring user interactions from a first voice response application dialogue between the IVR system and a user; mapping user interactions from the first voice response application dialogue into machine readable user interaction data such as a script; reproducing user interactions based on the machine readable user interaction data; and sending the simulated user interactions to a second voice response application under test. This solution addresses the problem by providing actual customer data for recreating customer reported problems in the laboratory instead of relying on a programmed bulk call generator.

The present invention is directed to an electrical wiring protection device for use in coupling an AC power distribution system to at least one electrical load. The device includes an automated self-test circuit coupled to the AC power distribution system. The automated self-test circuit is configured to generate at least one simulated fault signal during a first predetermined half-cycle of AC power. A detector circuit is coupled to the automated self-test circuit. The detector circuit generates a detection signal in response to the at least one simulated fault signal. An interval timing circuit is coupled to the test circuit. The interval timing circuit is configured to enable the automated self-test circuit to generate the at least one simulated fault signal during a first predetermined interval and not enable the test circuit during a subsequent second predetermined interval. The first predetermined interval and the second predetermined interval are recurring time intervals.