Abstract: A method for calculation, with high time resolution, of acceleration of an object in motion from a measurement, with low time resolution, of speed of the object, comprises approximation of the speed of the object from the speed measurement and a parametric model describing the motion of the object. The method further comprises estimation of parameters in the parametric model through a parametric estimation method based on the speed measurement and the parametric model. The method also comprises calculation of acceleration of the object from the parametric model and the estimated parameters, and calculation of a quality index representing the quality of the calculated acceleration from a quality measure representing the adaptation of the parametric model to the speed measurement, and a quality measure representing the quality of the speed measurement.

Abstract: Device (100) for reporting meter indication (160) for a movable machine or vehicle (150), comprising means for reading of one or more meter indications (210) for the movable machine or vehicle (150) via optical imaging with a camera, means for determination of an identity (220) of the movable machine or vehicle (150), means for determination of an identity (230) of a reporter (120), means for determination of a time (250) for the reading of one or more meter indications (210), means for determination of a position (240) of the movable machine or vehicle (150) at this time (250), means for checking of the identity (220) of the movable machine or vehicle (150) and the identity (230) of the reporter (120) against a list of approved identities and means for transfer of one or more meter indications (210), the identity (220) of the movable machine or vehicle (150), the identity (230) of the reporter (120), the time (250) and the position (240) to a central server (60).

Abstract: A method for obtaining activity rate of a portable electronic device (250) during travel with a vehicle (200) comprises determining (S100) a calculated driving distance based on the portable electronic device utilizing a sequence of measured positions for the portable electronic device. The method further comprises determining (S200) a read driving distance by reading of odometer indication (270) of the vehicle. The method also comprises calculating (S300) an activity rate by comparison of the calculated driving distance with the read driving distance. The method further comprises calculating (S400) a flag which indicates the validity of the calculated activity rate, where the flag is calculated based on the sequence of measured positions for the portable electronic device. The method also comprises transferring (S500) an information packet (280) to a central server (290), where the information packet comprises the activity rate, and/or the read driving distance, and/or the flag.

Abstract: Actions associated with entering information into different fields of an electronic form are monitored. The types of support provided for entering the information into the different fields can be dynamically varied according to monitored user actions or according to the context or categories of users, fields, or forms. Different types of query or search engines can be used to further identify the context, intent, or meaning of information entered into the different fields. The identified context, intents, or meanings are then used to provide further on-line support. Other analytics of both field entries and user actions can also be used to provide addition help when entering information into the on-line forms.

Abstract: Certain embodiments of the present invention are directed to automated human-motion-training systems. These automated human-motion-training systems include a hardware platform that provides for stored-instruction processing and that includes memory, an I/O interface, and an audio-signal generation and output component, and an operating system or control program that executes on the hardware platform and that provides a program-execution environment. The automated human-motion-training systems further include components of the human-motion-training system that provide for automated proctoring of human-motion exercises and training regimes, including monitoring of a user's body position, producing feedback corresponding to a user's body position, and determining a user's performance in order to modify the exercises and training regimes so that they provide optimal-challenge-point-based training over the course of multiple repetitions and training sessions.

Abstract: Actions associated with entering information into different fields of an electronic form are monitored. The types of support provided for entering the information into the different fields can be dynamically varied according to monitored user actions or according to the context or categories of users, fields, or forms. Different types of query or search engines can be used to further identify the context, intent, or meaning of information entered into the different fields. The identified context, intents, or meanings are then used to provide further on-line support. Other analytics of both field entries and user actions can also be used to provide addition help when entering information into the on-line forms.

Abstract: The present invention relates to a cancellation of echoes in telecommunications systems, more specifically it relates to adaptive alignment of a linear filter (500) used for echo cancellation. According to the invention, it is continuously determined, by means of control logic (520), if a reflection replica delay included in an echo replica signal (110), which delay is provided by a signal buffer (510), should be attempted to be increased or not. Similarly, it is continuously determined if the reflection replica delay should be attempted to be decreased or not. In this way it is possible to provide a delay of the reflection replica which corresponds to the pure delay of a corresponding reflection included in an echo signal (120) received over an echo path. The invention is advantageous since the filter (500) will continuously and quickly adapt to changes in the echo path delay by continuously increasing or decreasing, in an incremental and smooth manner, a present replica delay.

Abstract: The present invention relates to a cancellation of echoes in telecommunications systems, more specifically it relates to adaptive alignment of a linear filter (500) used for echo cancellation. According to the invention, it is continuously determined, by means of control logic (520), if a reflection replica delay included in an echo replica signal (110), which delay is provided by a signal buffer (510), should be attempted to be increased or not. Similarly, it is continuously determined if the reflection replica delay should be attempted to be decreased or not. In this way it is possible to provide a delay of the reflection replica which corresponds to the pure delay of a corresponding reflection included in an echo signal (120) received over an echo path. The invention is advantageous since the filter (500) will continuously and quickly adapt to changes in the echo path delay by continuously increasing or decreasing, in an incremental and smooth manner, a present replica delay.

Abstract: A method for mixing data streams (BS) is specified, whereby the mixing is carried out in a digital signal processor (DSP) of an ISDN interface module (IC), and the control of the data streams (BC) is managed by a module for communication according to the Media Gateway Control Protocol (MGCP), which replaces the control of a B channel in the ISDN interface module (IC). Furthermore, a telecommunication terminal with an ISDN interface module (IC) is specified for implementing the method according to the invention.

Abstract: Methods, systems, and arrangements enable true wide-band calibration of analog-to-digital conversion (ADC) using correction table indexing. The frequency of an analog input signal that corresponds to a digital output sample is accounted for, at least partially, when accessing a correction table during the creation and use thereof. For example, in addition to at least a portion of a current sample, at least portion(s) of previous and/or subsequent samples may be used to build (e.g., by bit concatenation) an index for addressing a correction table memory. In effect, compensation may be achieved for ADC errors that are frequency dependent. This correction table indexing may advantageously be employed along with a scheme that estimates one or more parameters of the analog input signal in the digital domain on a sample-by-sample basis in order to reconstruct the analog input signal in the digital domain.

Abstract: The invention relates to a method for transmitting proprietary signalings between a terminal (1) and a switching center (5, 8) in a telecommunications network (6) for controlling features, whereby the terminal (1) is connected to a first switching center (7), and the proprietary signalings are transmitted between the terminal (1) and a second switching center (5, 8) via a first user data channel (11). The invention also relates to a terminal (1), a switching center (5) and to a communications system (13) for implementing said method.

Abstract: The invention relates to the operation and administration of a call center, the network elements of which or the applications of which are distributed in a network and, in particular, are available via the Internet. In this arrangement, switches of a public network are linked into the administration. Communication between different network elements, particularly applications and servers from different domains takes place by converting interfaces of the applications into a protocol which is intended for interdomain communication.

Abstract: A method, arrangement, and system enable adaptive calibration of an analog-to-digital converter (ADC) from reference signals with unknown parameter(s) that may vary (e.g., a varying frequency). An analog reference signal s(t) is supplied to an ADC to be calibrated. The output x(n) of the ADC is used by a, e.g., sine-wave reconstruction filter to reconstruct an estimate ŝ(n) of the sampled instances of the signal s(t). A recursive frequency estimator within the sine-wave reconstruction filter produces a frequency estimate of the analog reference signal s(t) from the signal x(n). An adaptive reconstruction filter uses this frequency estimate and the signal x(n) to produce the estimate ŝ(n). When a convergence detector determines that the adaptive reconstruction filter has converged, the estimate ŝ(n) is used to alter values that are stored in a correction table. During functional operation of the ADC, the correction table is used to correct the output values of the ADC.

Abstract: Methods and apparatus for automatic gain and time delay computations between multiple sensors. In exemplary embodiments, one sensor is treated as a reference sensor with respect to a measured signal quantity which is assumed to be a narrowband process. The relative gain and relative time delay in the additional sensors with respect to the same measured quantity are then automatically calculated based on an adaptive filtering algorithm. Advantageously, the disclosed embodiments are implemented using standard digital signal processing components.

Abstract: Methods, systems, and arrangements enable true wide-band calibration of analog-to-digital conversion (ADC) using correction table indexing. The frequency of an analog input signal that corresponds to a digital output sample is accounted for, at least partially, when accessing a correction table during the creation and use thereof. For example, in addition to at least a portion of a current sample, at least portion(s) of previous and/or subsequent samples may be used to build (e.g., by bit concatenation) an index for addressing a correction table memory. In effect, compensation may be achieved for ADC errors that are frequency dependent. This correction table indexing may advantageously be employed along with a scheme that estimates one or more parameters of the analog input signal in the digital domain on a sample-by-sample basis in order to reconstruct the analog input signal in the digital domain.

Abstract: Methods and arrangements enable ADCs to be calibrated from reference signals with unknown parameters and/or with amplitudes that exceed the dynamic range of the ADCs. A given analog reference signal s(t) is supplied to an ADC. The output (x(k)) of the ADC is used by calibration logic to estimate at least one parameter of the reference signal. A FIR filter accepts as input the x(k) signals and outputs an estimate (ŝ(k)) as the sampled instances of the s(t) signal. A reconstruction table is created that approximates the analog input signal in the digital domain using the knowledge of the analog input signal waveform type. The actual ADC outputs are compared to the values in the reconstruction table to produce a correction table for calibration. In an alternative embodiment, calibration logic interpolates the output (x(k)) of the ADC to reconstruct clipped portion(s) of the input analog reference signal s(t) when the amplitude of the input analog reference signal s(t) exceeds the full swing of the ADC.

Abstract: Noisy speech parameters are enhanced by determining a background noise power spectral density (PSD) estimate, determining noisy speech parameters, determining a noisy speech PSD estimate from the speech parameters, subtracting a background noise PSD estimate from the noisy speech PSD estimate, and estimating enhanced speech parameters from the enhanced speech PSD estimate.

Abstract: A method, arrangement, and system enable adaptive calibration of an analog-to-digital converter (ADC) from reference signals with unknown parameter(s) that may vary (e.g., a varying frequency). An analog reference signal s(t) is supplied to an ADC to be calibrated. The output x(n) of the ADC is used by a, e.g., sine-wave reconstruction filter to reconstruct an estimate ŝ(n) of the sampled instances of the signal s(t). A recursive frequency estimator within the sine-wave reconstruction filter produces a frequency estimate of the analog reference signal s(t) from the signal x(n). An adaptive reconstruction filter uses this frequency estimate and the signal x(n) to produce the estimate ŝ(n). When a convergence detector determines that the adaptive reconstruction filter has converged, the estimate ŝ(n) is used to alter values that are stored in a correction table. During functional operation of the ADC, the correction table is used to correct the output values of the ADC.

Abstract: A method and system enables ADCs to be calibrated from reference signals with unknown parameters. A given analog reference signal s(t) is supplied to an ADC. The output (x(k)) of the ADC is used by calibration logic to estimate at least one parameter of the reference signal. A FIR filter accepts as input the x(k) signals and outputs an estimate (s(k)) as the sampled instances of the s(t) signal. A reconstruction table is created that approximates the analog input signal in the digital domain using the knowledge of the analog input signal waveform type. The actual ADC outputs are compared to the values in the reconstruction table to produce a correction table for calibration. A continuous time reference signal may be utilized for training the correction table. The method and system is data adaptive, so it may be applied, for example, with any sinusoidal reference input.

Abstract: A residual error based compensator for the frequency domain bias of an autoregressive spectral estimator is disclosed. LPC analysis is performed on the residual signal and a parametric PSD estimate is formed with the obtained LPC parameters. The PSD estimate of the residual signal multiplies the PSD estimate of the input signal.