1037results about How to "Improve call quality" patented technology

Disclosed are systems and methods which provide a centralized architecture for call processing. Embodiments utilize voice over Internet protocols (VoIP) to carry calls from a location at which calling services are provided to a centralized call processing platform providing call processing functionality, such as calling party identification, call validation, call routing, and connection to the public switched telephone network (PSTN). Call processing gateways may be utilized to provide plain old telephone service (POTS) analog line interfaces for use with a plurality of telephone sets disposed for use at a location and at least one wide area network (WAN) interface for providing high speed data communication to a centralized call processing platform. PSTN interfacing by a call processing platform may be provided as a VoIP connection to the PSTN and/or as POTS trunking. Call processing platforms may provide for data sharing, aggregation, and/or analysis across multiple facilities served.

Disclosed are systems and methods that provide centralized or nodal inmate management and telephone call processing capabilities to controlled environment facilities. An inmate management and call processing system serves a plurality of facilities and includes an inmate information database. The database is shared across the facilities and contains inmate records that may be accessed and modified by each facility as the inmate is transferred among those facilities. Each inmate record may include, among other information, contact information of third parties whom may be notified of the inmate's arrest and/or subsequent transfers of the inmate to different facilities. The inmate management and telephone call processing system may use third party contact information to establish accounts used to charge calls or transactions made by an inmate while residing at the facility. Some systems may also provide call processing, video conferencing, e-mail, voicemail, and/or videomail applications, and the like to the facilities.

The present invention provides flexible call processing. In one embodiment, a first call from a calling party intended for a called party is received at a call processing system. The call processing system places a second call to a telephonic device associated with the called party. The calling party and called party communicate via the first and second calls. A determination is made that the first call has been terminated. A call-back instruction is received from the called party while the second call is still in place. At least partly in response to receiving the call-back instruction, a third call is placed to a terminal associated with the calling party. The calling party and the called party can communicate via the second call and the third call.

The invention discloses a radio-frequency interference processing method, a storage medium and a terminal. The radio-frequency interference processing method comprises the following steps: obtaining radio frequency information obtained when the terminal communicates, wherein the radio frequency information comprises a current channel and signal intensity of the current channel; when judging that the current channel is an interference channel of MIPI (mobile industry processor interface) main frequency in an interference channel information record table, judging whether the difference value between the signal intensity of the current channel and interference degree corresponding to the interference channel is smaller than a threshold value; and when the difference value between the signal intensity of the current channel and the interference degree corresponding to the interference channel is smaller than the threshold value, adjusting working frequency of the MIPI into MIPI backup frequency. When the MIPI main frequency has interference on the radio-frequency signal, the MIPI work frequency is switched to the MIPI backup frequency, thereby reducing interference of the MIPI main frequency on the radio-frequency signal, and improving conversation quality.

The invention discloses a method for detecting the conditions of microphone voice-grade channels and a terminal, and belongs to the field of mobile terminals. The method includes the steps that acoustical signals are acquired through each microphone; the characteristics of each acquired acoustical signal are extracted; whether abnormal conditions of the microphone voice-grade channels exist or not is judged according to the difference between the characteristics of the acoustical signals. According to the method, whether the abnormal conditions of the microphone voice-grade channels exist or not is judged through analysis of the difference between the characteristics of the acoustical signals collected through the microphones, signal optimization is carried out on an abnormal channel or a user is reminded to examine and handle the abnormal channel, and therefore speech quality can be improved.

Methods and systems of routing calls over a network are described herein. A latency measurement is performed for at least a plurality of portions of a plurality of network paths and storing latency measurement information in computer readable memory. A dropped packet measurement is performed for at least portions of the plurality of network paths and storing dropped packet measurement information in computer readable memory. A call origination request is received. A network routing path is selected from the plurality of network paths, the network paths including a call manager, based at least in part on the latency measurement information and the dropped packet measurement information. A proxy system associated with a SIP provider is informed of the call. The call manager in the selected network path generates the call.

Disclosed are systems and methods which provide call processing for a plurality of telephones at a site for which calling services are provided. Call control functionality is distributed to remote locations using data networks according to embodiments. The aforementioned data networks and/or separate data networks are used to carry call content using voice over Internet protocols (VoIP). Embodiments utilize VoIP to carry calls from a location at which calling services are provided to a centralized call processing platform providing call processing functionality, such as calling party identification, call validation, call routing, and connection to the public switched telephone network (PSTN). PSTN interfacing by a call processing platform may be provided as a VoIP connection to the PSTN and/or as POTS trunking. Call processing platforms may provide for data sharing, aggregation, and/or analysis across multiple facilities served.

The invention discloses a mobile secret communication method based on a quantum key distribution network. The method includes the steps that a mobile terminal registers to have access to the network, and the binding relationship between the mobile terminal and some centralized control station in the quantum key distribution network is built; after communication service is started, the mobile terminal participating in the communication applies for a service key from the quantum key distribution network; the quantum key distribution network obtains the addresses of all centralized control stations participating in service key distribution in the communication, and a service key generation centralized control station is assigned according to the current state indicators of all the centralized control stations; the service key generation centralized control station generates the service key needed by the communication and distributes the service key to the mobile terminal participating in the communication; the mobile terminal participating in the communication uses the service key, and secret communication is performed through the original data link of the communication service of the class. According to the method, the existing scheme in the industry is improved in the service key generation link and the key relay link, and the problem that when there are lots of relay nodes, key arrival lags behind, and the quality of service is influenced is solved.

The invention relates to the field of noise reduction processing of mobile phone communication, in particular to a simulation noise reduction system and a simulation noise reduction method which are suitable for a microphone of a mobile phone device. An audio signal and a noise signal are acquired through double microphones and processed respectively; the noise signal is eliminated by using the interference principle of sound waves; and a high-frequency signal is eliminated by using a low-pass filter. The noise reduction system effectively eliminates linear noise, nonlinear noise and the high-efficiency signal, thereby achieving high conservation quality and good noise restraining effect. The system does not need installing a digital signal processor (DSP) algorithm, so that the cost and the complexity of the system are reduced. The system can be integrated with a chip, so that peripheral system discrete components such as a resistor, a capacitor, an amplifier, an analog to digital converter and the like which are needed by a conventional circuit are eliminated; the cost and the complexity of the system are reduced; and the system contributes to large-scale popularization and application.

The present invention discloses a Bluetooth relay device and a method to realize the relay, which are suitable for wireless communication systems of Bluetooth terminals and Bluetooth gateways. The device comprises a processor module arranged with a memory for a Bluetooth protocol stack at an intermediate operation layer and an upper layer and to realize conversion between a Bluetooth earphone protocol and a cordless phone protocol, a Bluetooth module connected with the processor module and arranged with a Bluetooth radio frequency and base band processing chip, a power amplifier and a low-noise amplifier respectively connected with the Bluetooth radio frequency and base band processing chip to operate a lower layer of Bluetooth protocol stack, communicate with the processor module and conduct receiving/sending of Bluetooth radio frequency and base band processing. The present invention realizes interconnection between a Bluetooth earphone or a handheld Bluetooth terminal and a voice gateway based on a Bluetooth cordless phone protocol in a specific scope, thus making full use of fixed network resource, improving call quality and reducing call expense.

The method includes steps: (1) network side sets up threshold value of position for mobile station; and informing the set up threshold value of position to mobile station; (2) mobile station monitors and determines whether own position reaches to the threshold value of position in step (1) in real time; when reaching the threshold value of position, mobile station makes report to network side; (3) after receiving report in step (2), network side switches mobile station between adjacent cells. Based on accurate position, the invention makes mobile station switch between adjacent cells.

The invention discloses a noise reduction method, a noise reduction device and a communication terminal which are used for solving the noise interference problem in communication terminal conversation. The noise reduction method comprises controlling a first voice frequency input device to collect noise in an environment where the communication terminal is located; carrying out spectral analysis comparison on the environment noise and pre-stored scene noise in the communication terminal to obtain a comparison result; and according to the comparison result, calling noise reduction parameters corresponding to the environment noise, and according to the noise reduction parameters, separating user sound collected by a second voice frequency input device. The noise reduction method, the noise reduction device and the communication terminal have the advantages that through man-machine interaction, an exclusive button is set, a recording menu is called by triggering the button, a user can record noise in a user-defined mode and set the noise reduction parameters, in a conversation state, the user sound is separated through scene noise identification, conversation quality of the communication terminal is improved, and noise reduction cost of the communication terminal is saved.

The invention relates to an automatic sound feedback detection and elimination method of a real-time communication system. The method is characterized by comprising steps that the audio data is acquired, and the historical squeaking estimation information is initiated; overlapping, windowing and FFT transformation of each frame of audio data are carried out to acquire the transformation data from a time domain to a frequency domain; a peak value power of the frequency domain data and a peak value interval are calculated; traversal of all the peak value information is carried out to acquire the present frame suspected squeaking frequency point information; the historical squeaking estimation information is updated through utilizing the peak value information and the present frame suspected squeaking frequency point information; the updated historical squeaking estimation information is analyzed, and present frame squeaking point determination is accomplished; a corresponding trap filter is generated according to a present frame squeaking point determination result. Through the method, sound feedback can be rapidly, accurately and effectively detected and eliminated, conversation quality is obviously improved, and the method has quite important application values in voice conferences and loudspeaker voice communication.

The embodiment of the invention discloses a method for regulating voice output of a mobile terminal and a mobile terminal. The method comprises the following steps: receiving the voice signal by the mobile terminal during a conversation process of a user; conducting voice matching processing to the voice signal according to the voice feature data pre-stored of the user; conducting voice control processing to the results of the voice data matching and obtaining voice output data; and sending the voice output data. The implementation of the embodiment of the invention can improve the conversation quality of the voice output data by conducting matching processing to the voice signal received and user feature data and voice control processing to the results of the matching processing.

The invention discloses a system and a method for improving audio speech quality comprises the following steps that: firstly, preemphasis and Fourier transform treatment of the current frame of time domain first audio signal output by an audio collecting device and the current frame of the time domain second audio signal output by an audio playing device are completed; secondly, according to the frequency domain error signal parameter and frequency domain learning rate parameter obtained by the previous frame of the current frame, a frequency domain second audio signal is corrected; thirdly, de-emphasis treatment and subtraction of the first audio signal and the second audio signal are completed, thereby eliminating the echo in the first audio signal; meanwhile, according to the corrected time domain second audio signal and frequency domain second audio signal and preemphasized time domain first audio signal, the frequency domain error signal parameter and frequency domain learning rate parameter of the current frame are calculated and used for the treatment of the next frame, thereby effectively eliminating speech echo; in addition, through estimating the residual echo and noise of the audio signal with the echo eliminated, the invention effectively eliminates the noise in the audio signal and greatly improves the speech quality.

A method of removing a microphone noise and a portable terminal supporting the same are provided. The portable terminal supporting removal of a microphone noise includes a microphone for collecting an audio signal, a controller for processing the audio signal collected by the microphone, a microphone signal line for transferring a microphone signal collected by the microphone to the controller, and a noise collecting circuit disposed at a neighboring region of the microphone signal line for collecting and providing a noise signal similar to a noise induced in the microphone signal line to the controller, wherein the controller controls such that the noise induced in the microphone signal line is removed based on the noise signal collected by the noise collecting circuit.

The invention discloses a device and a communication method thereof for achieving a distributed type radio cell. The method comprises the following steps: after being received by a radio frequency remote unit, an uplink signal sent by a mobile terminal is forwarded to a base band unit; after being received by the base band unit, the uplink signal is resolved and synthesized, and sent to a base station controller; the base station controller sends a downlink signal to the base band unit; after being received by the base band unit, the downlink signal is resolved, and then distributed to a plurality of radio frequency remote units; and the radio frequency remote units forward the downlink signal to the mobile terminal through an aerial interface. The invention expands the effective coverage scope of the cell through the distributed type collaboration of the radio frequency unit at the remote end, thereby prolonging the sojourn time of a high speed mobile terminal passing through the cell, improving the measuring and switching effects of the mobile terminal passing through an adjacent cell, improving the communication quality of a mobile user, and satisfying the mobile communication demands on the occasions like express railway lines in a pertinence manner and the like.

The embodiment of the invention discloses an antenna control method and a mobile terminal, wherein the antenna control method is applied to the mobile terminal; and the mobile terminal comprises a pop-up antenna and an electric device connected with the pop-up antenna. The antenna control method comprises the following steps: detecting the signal strength received by the mobile terminal in a communication state in real time; judging whether the signal strength is greater than a preset first strength threshold value or not in real time; and if not, controlling the electric device to pop out the pop-up antenna. By means of the embodiment in the invention, when the mobile terminal is in the communication state and the received signal strength is relatively weak, the pop-up antenna is automatically popped out, such that the signal strength received by the mobile terminal is enhanced; therefore, the communication quality of the mobile terminal is improved; users are unnecessary to manually operate and carry an auxiliary antenna; and thus, the user experience can be effectively improved.

The embodiment of the invention relates to method and system for improving multi-media connection quality and media control and processing equipment. In the invention, through comparing the parametersof a quality information feedback with corresponding parameters in a present session, the media control equipment notifies a transcoding machine of the media processing equipment to dynamically regulate media data; or through trigging the negotiation between the media control equipment and a multi-media terminal, the media data is regulated dynamically; or through expanding a H.248 indicative massage of the media control equipment, the media processing equipment is ordered to send a quality expansion message to dynamically regulate the media data so as to improve the multi-media connection quality; moreover, the media processing equipment can be used to dynamically detect the quality of the media data transmitted from a media data sending side in the process of the coding and decoding andtransmission of the media data, and to notify the media control equipment of the quality problems when the quality decreases, and then the media control equipment interacts with the media data sending side so as to regulate the media data sent by the media data sending side.

The present invention relates to a mobile terminal, to a system and a method capable of monitoring in real-time a delay time of data transmitted/received between terminals in mobile terminals. According to the method, a terminal at a transmission side encodes data for an image call, transmits the encoded data to a terminal at a reception side, and receives the transmitted data as a loop-back to decode the same. An external monitoring device measures delay time information of the data using encoding and decoding time information and displays the information on a screen.