A position detection method may include obtaining voice signals during a voice call by at least two voice collecting devices; obtaining position energy information of the voice signals; and identifying a position of the terminal device relative to a user during the voice call, from predefined positions based on the position energy information.

The present subject matter relates to one or more devices, systems and/or methods for generating sealing current at a customer's premises or residence and injecting the sealing current into a DSL service provider's telephone cables to prevent the oxidation or corrosion of wire splices or connections on the telephone cables transporting DSL services. A cable pair stabilizer unit is connected at the customer's premises or residence, between the service provider's telephone cables and the customer's residential gateway/modem. The cable pair stabilizer unit comprises circuitry for generating the sealing current and for injecting the sealing current into the service provider's telephone cables transporting DSL services. The cable pair stabilizer unit may be combined with an AC/DC power supply adapter as a single, integrated device. The cable pair stabilizer unit may alternatively be combined with or inside of the Residential Gateway as a single, integrated device.

The present subject matter relates to one or more devices, systems and/or methods for generating sealing current at a customer's premises or residence and injecting the sealing current into a DSL service provider's telephone cables to prevent the oxidation or corrosion of wire splices or connections on the telephone cables transporting DSL services. A cable pair stabilizer unit is connected at the customer's premises or residence, between the service provider's telephone cables and the customer's residential gateway/modem. The cable pair stabilizer unit comprises circuitry for generating the sealing current and for injecting the sealing current into the service provider's telephone cables transporting DSL services. The cable pair stabilizer unit may be combined with an AC/DC power supply adapter as a single, integrated device. The cable pair stabilizer unit may alternatively be combined with or inside of the Residential Gateway as a single, integrated device.

There are disclosed devices, system and methods for desired signal spotting in noisy, flawed environments by identifying a signal to be spotted, identifying a target confidence level, and then passing a pool of cabined arrays through a comparator to detect the identified signal, wherein the cabined arrays are derived from respective distinct environments. The arrays may include plural converted samples, each converted sample include a product of a conversion of a respective original sample, the conversion including filtering noise and transforming the original sample from a first form to a second form. Detecting may include measuring a confidence of the presence of the identified signal in each of plural converted samples using correlation of the identified signal to bodies of known matching samples. If the confidence for a given converted sample satisfies the target confidence level, the given sample is flagged.

There are disclosed devices, system and methods for desired signal spotting in noisy, flawed environments by identifying a signal to be spotted, identifying a target confidence level, and then passing a pool of cabined arrays through a comparator to detect the identified signal, wherein the cabined arrays are derived from respective distinct environments. The arrays may include plural converted samples, each converted sample include a product of a conversion of a respective original sample, the conversion including filtering noise and transforming the original sample from a first form to a second form. Detecting may include measuring a confidence of the presence of the identified signal in each of plural converted samples using correlation of the identified signal to bodies of known matching samples. If the confidence for a given converted sample satisfies the target confidence level, the given sample is flagged.

A method of reducing crosstalk into a victim line from disturber lines in a communication system may include obtaining a pilot matrix and a measurement vector associated with the pilot matrix, the pilot matrix representing pilot signals transmitted by at least the disturber lines, the measurement vector being influenced by the pilot signals via the crosstalk; estimating estimated crosstalk coefficients of significant ones of the disturber lines by solving a reduced linear system using only non-clipped measurements in the measurement vector, the reduced linear system being derived from the pilot matrix; determining compensation coefficients to reduce the crosstalk based on the estimated crosstalk coefficients; and reducing crosstalk by one or more of pre-compensating signals transmitted on the victim line and post-compensating signals received on the victim line based on the compensation coefficients.

A method of reducing crosstalk into a victim line from disturber lines in a communication system may include obtaining a pilot matrix and a measurement vector associated with the pilot matrix, the pilot matrix representing pilot signals transmitted by at least the disturber lines, the measurement vector being influenced by the pilot signals via the crosstalk; estimating estimated crosstalk coefficients of significant ones of the disturber lines by solving a reduced linear system using only non-clipped measurements in the measurement vector, the reduced linear system being derived from the pilot matrix; determining compensation coefficients to reduce the crosstalk based on the estimated crosstalk coefficients; and reducing crosstalk by one or more of pre-compensating signals transmitted on the victim line and post-compensating signals received on the victim line based on the compensation coefficients.

Embodiments of the present invention pertain to reducing or eliminating speech recognition error when background noise is detected at a caller's location. For example, when background noise is detected at the caller's location, the caller may be prompted to use dual-tone multi-frequency (DTMF).

Provided is a method of controlling an audio characteristic of an electronic device performed by a server, the method including receiving, from a first electronic device, first audio characteristic information that is measured during a call of the first electronic device; receiving, from the first electronic device, first device characteristic information of the first electronic device; first classifying the first audio characteristic information based on the first device characteristic information; generating environment setting information based on classified audio characteristic information including the first classifying; receiving, from a second electronic device among the plurality of electronic devices, second device characteristic information of the second electronic device; and transmitting second environment setting information corresponding to the second device characteristic information to the second electronic device, wherein the second environment setting information is applied to control an audio characteristic for a call of the second electronic device.

Provided is a method of controlling an audio characteristic of an electronic device performed by a server, the method including receiving, from a first electronic device, first audio characteristic information that is measured during a call of the first electronic device; receiving, from the first electronic device, first device characteristic information of the first electronic device; first classifying the first audio characteristic information based on the first device characteristic information; generating environment setting information based on classified audio characteristic information including the first classifying; receiving, from a second electronic device among the plurality of electronic devices, second device characteristic information of the second electronic device; and transmitting second environment setting information corresponding to the second device characteristic information to the second electronic device, wherein the second environment setting information is applied to control an audio characteristic for a call of the second electronic device.