Abstract: There is provided a method of using an adaptive tilt compensation by a speech decoder. The method comprises receiving a bit stream including a plurality of parameters representative of a speech signal; identifying an adaptive code vector and a fixed code vector using the plurality of parameters; scaling the adaptive code vector and the fixed code vector to generate a scaled adaptive code vector and a scaled fixed code vector; summing the scaled adaptive code vector and the scaled fixed code vector to generate a synthesized output; calculating a first reflection coefficient based on the plurality of parameters representative of the speech signal; multiplying the first reflection coefficient by a factor to generate a tilt factor; and applying the tilt factor to the synthesized output based on an encoding bit rate.

Abstract: There is provided a method of using a processing circuitry for selecting a preferential pitch lag value from a plurality of pitch lag values, including a first pitch lag value and a second pitch lag value, for coding an input speech signal. The method comprises determining a first timing relationship between a previous pitch lag value and at least one of the plurality of pitch lag values; determining a second timing relationship between the first pitch lag value and the second pitch lag value; favoring one of the first pitch lag value and the second pitch lag value based on the first timing relationship and the second timing relationship to select one of the first pitch lag value and the second pitch lag value as the preferential pitch lag value; and converting the input speech signal into an encoded speech using the preferential pitch lag value.

Abstract: An electronic device including a first housing, a second housing, a signal cable, an insulating layer and an antenna is provided. The second housing is connected to the first housing and has a housing shielding layer on its inner surface. The signal cable extends from inside the first housing into the second housing and has a cable shielding layer on its outer surface. The insulating layer is disposed between the housing shielding layer and the cable shielding layer so as to electrically insulate the housing shielding layer from the cable shielding layer. The antenna is disposed inside the second housing. The insulating layer prevents the housing shielding layer from contacting the cable shielding layer so that the influence of the system noise on the sensitivity of the antenna can be reduced.

Abstract: There is provided a method of selecting a pitch lag value for a portion of a speech signal, the method comprising: computing a weighted correlation function of the portion of the speech signal for a range of delay times, wherein the weighting of the correlation function depends on both the delay time and a characteristic of one or more previous portions of the speech signal; and selecting the pitch lag value based on a delay time from the range of delay times that maximizes the weighted correlation function.

Abstract: An electronic device including a first housing, a second housing, a signal cable, an insulating layer and an antenna is provided. The second housing is connected to the first housing and has a housing shielding layer on its inner surface. The signal cable extends from inside the first housing into the second housing and has a cable shielding layer on its outer surface. The insulating layer is disposed between the housing shielding layer and the cable shielding layer so as to electrically insulate the housing shielding layer from the cable shielding layer. The antenna is disposed inside the second housing. The insulating layer prevents the housing shielding layer from contacting the cable shielding layer so that the influence of the system noise on the sensitivity of the antenna can be reduced.

Abstract: A wireless communication module used for a portable electronic device comprises a first antenna module and a second antenna module, which first antenna module has a first antenna for transmitting and receiving of wireless signals, an electronic circuit for coding and decoding of wireless signals, and a detector for detecting of signal intensity, and which second antenna module has a signal transmission line and a second antenna for transmitting and receiving of wireless signals; the first antenna module connects to the second antenna module via the signal transmission line of the second antenna mode to have the detector of the first antenna module can detect and compare the signal intensity of the first and second antennas, when a weaker signal is detected at the first antenna of the first antenna module, the signal transmission/receiving task is actively shifted to the second antenna of the second antenna module; the wireless signal received by the first antenna of the first antenna module or by the second a

Abstract: The present invention relates to a modulized antenna structure, which comprises: a first antenna module for receiving a first transmission signal in which at least one side of the first antenna module has a first opening; a second antenna module for receiving a second transmission signal in which at least one side of the second antenna module has a second opening; and a fixed component, while being assembled, with the fixed component, the first antenna module is partially overlapped with the second antenna modules and the first opening is fully overlapped with the second opening, thus the fixed component can pass through the first and second openings and be fixed on the screen of an electronic device.

Abstract: In accordance with one aspect of the invention, a selector supports the selection of a first encoding scheme or the second encoding scheme based upon the detection or absence of the triggering characteristic in the interval of the input speech signal. The first encoding scheme has a pitch pre-processing procedure for processing the input speech signal to form a revised speech signal biased toward an ideal voiced and stationary characteristic. The pre-processing procedure allows the encoder to fully capture the benefits of a bandwidth-efficient, long-term predictive procedure for a greater amount of speech components of an input speech signal than would otherwise be possible. In accordance with another aspect of the invention, the second encoding scheme entails a long-term prediction mode for encoding the pitch on a sub-frame by sub-frame basis.

Abstract: An electronic device with dual antenna structures comprises a first antenna module for receiving a first transmission signal or a second transmission signal, a first antenna decoding device for decoding the first transmission signal, a second antenna decoding device for decoding the second transmission signal, a controller and a control module, wherein the controller will control the control module to drive the second antenna decoding device to transmit signals by using the second transmission signal as a top priority, if the second transmission signal exists in an environment where the electronic device is located, otherwise the controller will control the control module to drive the first antenna decoding device to transmit signals by using the first transmission signal as a top priority if the second transmission signal does not exist in such environment. Further, the invention also provides a method for switching antennas of the electronic device.

Abstract: There is provided a method of selecting a pitch lag value from a plurality of pitch lag candidates for coding a speech signal. The method comprises identifying the plurality of pitch lag candidates from a frame of the speech signal using correlation; classifying the speech signal to obtain a voice classification; determining whether one or more of the plurality of pitch lag candidates are in a temporal neighborhood of one or more previous pitch lag values; favoring the one or more of the plurality of pitch lag candidates determined to be in the temporal neighborhood of the one or more previous pitch lag values, by adaptive weighting, over other ones of the plurality of pitch lag candidates; and selecting the pitch lag value based on the voice classification and the one or more of the plurality of pitch lag candidates favored by the adaptive weighting.

Abstract: The invention improves the encoding and decoding of speech by focusing the encoding on the perceptually important characteristics of speech. The system analyzes selected features of an input speech signal, and first performing a common frame based speech coding of an input speech signal. The system then performs a speech coding based on either a first speech coding mode or a second speech coding mode. The selection of a mode is based on characteristics of the input speech signal. The first speech coding mode uses a first framing structure and the second speech coding mode uses a second framing structure.

Abstract: A wireless communication module used for a portable electronic device comprises a first antenna module and a second antenna module, which first antenna module has a first antenna for transmitting and receiving of wireless signals, an electronic circuit for coding and decoding of wireless signals, and a detector for detecting of signal intensity, and which second antenna module has a signal transmission line and a second antenna for transmitting and receiving of wireless signals; the first antenna module connects to the second antenna module via the signal transmission line of the second antenna mode to have the detector of the first antenna module can detect and compare the signal intensity of the first and second antennas, when a weaker signal is detected at the first antenna of the first antenna module, the signal transmission/receiving task is actively shifted to the second antenna of the second antenna module; the wireless signal received by the first antenna of the first antenna module or by the second a

Abstract: A portable electronic device to detect wireless signals in a shutdown state comprises a motherboard module with an internally embedded controller (EC) and a display module with a wireless signal detector, when in a shutdown state, the portable electronic device activates the wireless signal detector via the embedded controller and when the wireless signal detector detects a wireless signal, the portable electronic device boots and links to a wireless local area network automatically via the firmware of the embedded controller; which embedded controller also controls an indication lamp to give a prompt of booting the device and linking to the wireless local area network manually. The portable electronic device ensures time and energy saving with extended service life by avoiding repeated booting and shutdown of the device.

Abstract: The invention improves the encoding and decoding of speech by focusing the encoding on the perceptually important characteristics of speech. The system analyzes selected features of an input speech signal, and first performing a common frame based speech coding of an input speech signal. The system then performs a speech coding based on either a first speech coding mode or a second speech coding mode. The selection of a mode is based on characteristics of the input speech signal. The first speech coding mode uses a first framing structure and the second speech coding mode uses a second framing structure.

Abstract: There are provided methods and devices for generating excitation values for a speech signal. In one aspect, an example method comprises obtaining one or more characteristics of a first speech frame of the speech signal, deriving a first seed value based on the one or more characteristics of the first speech frame, providing the first seed value to a Gaussian time series generator; and using the Gaussian time series generator to generate an excitation values for the first frame. The one or more characteristics may include a spectrum information of the first frame, an energy information of the first frame, or a gain information of the first frame.

Abstract: A speech encoding system and method for encoding a speech data signal including a number of frames. The speech encoding system includes a speech data rate determinator and a number of speech data signal encoders. The speech data rate determinator determines the data rate of each of the frames and selects one of the speech data signal encoders based on each data rate. Each frame may be encoded using a different encoding method or standard. The encoding system may further include a network controller for selecting any number of the speech data signal encoders based on predetermined factors.

Abstract: Speech coding systems include multi-rate speech codecs having an encoder and a decoder. Silence description coding for multi-rate speech coding systems that employ discontinued transmission is performed in either the encoder or the decoder of the multi-rate speech codec. It may also be performed in a distributed manner wherein it is performed partially in the encoder and partially in the decoder. The silence description coding is performed on a speech signal having a substantially non-speech-like characteristic. Voice activity detection classifies the speech signal as being either substantially speech-like or substantially non-speech-like. The silence description coding is selected from a plurality of coding modes. In certain embodiments of the invention, the silence description coding is a source coding mode that operates at a bit rate that fits within a bit rate budget as determined by all of the available source coding modes within the plurality of coding modes.

Abstract: A method of adjusting an echo canceller comprises obtaining a first cross-correlation between a far-end signal and an error signal, wherein the error signal is generated by subtracting an output signal of an adaptive filter from a local-end signal; determining whether the first cross-correlation is above a pre-determined threshold; relocating the adaptive filter by a few samples if the determining determines that the first cross-correlation is above a pre-determined threshold; calculating a first improvement indicator parameter, wherein the first improvement indicator parameter is calculated after the relocating the adaptive filter by the few samples; determining whether the first improvement indicator parameter indicates a performance improvement by the adaptive filter after the relocating the adaptive filter by the few samples; calculating a gain based on the local-end signal and the error signal if the determining does not determine the performance improvement; and multiplying the adaptive filter by the ga

Abstract: A multi-channel speech processor for encoding speech in a packet network environment is disclosed. In one illustrative aspect, a complexity resource manager (CRM) is executed by a controller or processor. The CRM manages the level of complexity of encoding which is used by a signal processing unit (SPU) to convert the speech signal into packet data. In general, the CRM determines the level of complexity of encoding based on a calculated complexity budget, where the complexity budget is determined based on the time required to process prior speech signal channels and the time available to process the remaining channels. In this way, the CRM is able to control the overall complexity of the speech processor through its ability to signal the SPU to encode speech signal in a complexity reduced mode based on the calculated complexity budget under certain conditions.

Abstract: An exemplary multi-channel speech processor comprises a controller capable of interfacing with a plurality of channels, and at least one signal processing unit (SPU) coupled to the controller, where the multi-channel speech processor has a maximum execution time for processing all frames, one channel at a time, by processing a single frame from each of the plurality of channels. The signal processing unit encodes each of the single frames from each of the plurality of channels, one channel at a time, to generate encoded frames until the maximum execution time elapses or is about to elapse. The controller also transmits a predetermined frame for each of the plurality of channels not processed during the encoding step, due to the maximum execution time elapsing or being about to elapse, such that the predetermined frame causes a decoder which receives the predetermined frame to generate a frame erase frame.