Patent application number | Description | Published |
20100082339 | Wind Noise Reduction - By monitoring the wind noise in a location in which a cellular telephone is operating and by applying noise reduction and/or cancellation protocols at the appropriate time via analog and/or digital signal processing, it is possible to significantly reduce wind noise entering into a communication system. | 04-01-2010 |
20100169082 | Enhancing Receiver Intelligibility in Voice Communication Devices - The intelligibility of speech signals is improved in the many situations where a voice signal is communicated or stored. Means and methods are disclosed for developing a scheme with high voice signal intelligibility without sacrificing the voice quality. The disclosed method comprises certain steps, including, but not limited to: Learning the noise on near-end side and enhancing the far-end voice as a function of the noise type and noise level on the near-end side. The disclosed method and apparatus are especially useful to increase the intelligibility of the communication device's loudspeaker output. The invention includes processing of an input speech signal to generate an enhanced intelligent signal. The FFT spectrum of the speech received from the far-end is modified in accordance with the LPC spectrum of the local background noise to generate an enhanced intelligent signal. | 07-01-2010 |
20110004470 | Method for Wind Noise Reduction - A noisy signal is picked up by a microphone, digitized by an Analog to Digital Converter and fed to a processor for analysis and wind noise reduction. Most of noise reduction methods are based on the assumption that the interfering noise is stationary or slowly varying compared with speech. This assumption allows “learning” the characteristics of the noise between speech pauses and, based on a noise estimate, to build different filters that reduce the noise. In the case of wind noise this basic assumption is not valid. Wind noise is highly non-stationary, its power and spectral characteristics vary greatly. Because wind noise is not stationary, regular noise reduction methods cannot be used to reduce wind noise. For reducing wind noise effects in a device, the presence of wind should be detected reliably and then a novel approach presented here must be applied to eliminate the wind noise. | 01-06-2011 |
20110007906 | Wind Noise Classifier - A special purpose machine measures and modulates communication signals that are parsed into frames. Frames of signals modulated and measured to have certain qualities are deemed to be the result of wind noise. Frames of wind noise are cancelled from further use within a communication system. | 01-13-2011 |
20110010172 | NOISE REDUCTION SYSTEM USING A SENSOR BASED SPEECH DETECTOR - Speech detection is a technique to determine and classify periods of speech. In a normal conversation, each speaker speaks less than half the time. The remaining time is devoted to listening to the other end and pauses between speech and silence. The classification is usually done by comparing the signal energy to a threshold. Classifying speech as noise and noise as speech may affect the performance of the communication device. The current invention overcomes such problems by utilizing an alternate sensor signal indicating the presence or absence of speech. In the current invention, the communication device receives an audio signal via single or multiple microphones. The speech sensor may generate a unique signal based on the facial, bone, lips and/or throat movements. The system then combines the information received by the microphones and the speech sensor to decide the presence or absence of speech. This decision can be used in the coding, compression, noise reduction and other aspects of signal processing. | 01-13-2011 |
20110022395 | Machine for Emotion Detection (MED) in a communications device - A system and method monitors the emotional content of human voice signals after the signals have been compressed by standard telecommunication equipment. By analyzing voice signals after compression and decompression, less information is processed, saving power and reducing the amount of equipment used. During conversation, a user of the disclosed methodology may obtain information in various formats regarding the emotional state of the other party. The user may then view the veracity, composure, and stress level of the other party. The user may also view the emotional content of their own transmitted speech. | 01-27-2011 |
20110029308 | Speech & Music Discriminator for Multi-Media Application - The present invention relates to means and methods of classifying speech and music signals in voice communication systems, devices, telephones, and methods, and more specifically, to systems, devices, and methods that automate control when either speech or music is detected over communication links. The present invention provides a novel system and method for monitoring the audio signal, analyze selected audio signal components, compare the results of analysis with a pre-determined threshold value, and classify the audio signal either as speech or music. | 02-03-2011 |
20110054889 | Enhancing Receiver Intelligibility in Voice Communication Devices - The intelligibility of speech signals is improved in the many situations where a voice signal is communicated or stored. Means and methods are disclosed for developing a scheme with high voice signal intelligibility without sacrifice of voice quality. The disclosed method comprises certain steps, including, but not limited to: Learning the noise on near-end side and enhancing the far-end voice as a function of the noise level on the near-end side. The disclosed method and apparatus are especially useful to increase the intelligibility of the cell phone's loudspeaker output. The invention includes the processing of an input speech signal to generate an enhanced intelligent signal. In frequency domain, the FFT spectrum of the speech received from the far-end is modified in accordance with the LPC spectrum of the local background noise to generate an enhanced intelligent signal. In time domain, the speech is modified in accordance with the LPC coefficients of the noise to generate an enhanced intelligent signal. | 03-03-2011 |
20110066427 | Receiver Intelligibility Enhancement System - Embodiments of the invention provide a communication device and methods for enhancing audio signals. A first audio signal buffer and a second audio signal buffer are acquired. Thereafter, the magnitude spectrum calculated from the Fast Fourier Transform (FFT) of the second audio signal is processed based on the Linear Predictive Coding (LPC) spectrum of the first audio signal to generate an enhanced second audio signal. | 03-17-2011 |
20110071821 | RECEIVER INTELLIGIBILITY ENHANCEMENT SYSTEM - Embodiments of the invention provide a communication device and methods for enhancing audio signals. A first audio signal buffer and a second audio signal buffer are acquired. Thereafter, the second audio signal is processed based on the linear predictive coding coefficients and gains based on noise power of the first audio signal to generate an enhanced second audio signal. | 03-24-2011 |
20110091047 | Active Noise Control in Mobile Devices - A three dimensional area of quiet is created by an active noise cancellation system comprising a reference microphone receiving background noise and sending the noise signal to an adaptive active noise canceller. An adaptive filter system using weights updated by a least mean squares method or other method generates an anti-phase signal which is broadcasted to counteract the background noise. The resulting residual noise or residual signal is sent back to the adaptive active noise canceller to reset the weights of the adaptive filter. | 04-21-2011 |
20110201325 | SYSTEM, DEVICE, DATABASE AND METHOD FOR INCREASING THE CAPACITY AND CALL VOLUME OF A COMMUNICATIONS NETWORK - Capacity of cellular telephone network is increased by using database to record number of callers using low data rate equipment, such as noise reducing or canceling equipment. Use of noise reduction telephones leads to increase in SNR which allows greater number of users. As number of low data rate communications devices, such as noise reduction cellular telephones increases on network and replace higher data rate devices, capacity of network increases as compared to a network that has greater number of higher data rate devices, and number of allowed calls on network may be increased. Business method for operating network, such as a cellular telephone network, that increase revenues and profitability of network as result of increasing network capacity without increasing network infrastructure. Database alone and in combination with cellular device and network used to identify and track number of cellular telephone users who are using low data rate equipment. | 08-18-2011 |
20110312318 | SYSTEM, DEVICE, DATABASE AND METHOD FOR INCREASING THE CAPACITY AND CALL VOLUME OF A COMMUNICATIONS NETWORK - Capacity of cellular telephone network is increased by using database to record number of callers using low data rate equipment, such as noise reducing or canceling equipment. Use of noise reduction telephones leads to increase in SNR which allows greater number of users. As number of low data rate communications devices, such as noise reduction cellular telephones increases on network and replace higher data rate devices, capacity of network increases as compared to a network that has greater number of higher data rate devices, and number of allowed calls on network may be increased. Business method for operating network, such as a cellular telephone network, that increase revenues and profitability of network as result of increasing network capacity without increasing network infrastructure. Database alone and in combination with cellular device and network used to identify and track number of cellular telephone users who are using low data rate equipment. | 12-22-2011 |
20110313759 | Method for changing the caller voice during conversation in voice communication device - The invention relates to a cellular phone terminal system and in particular to a method for changing caller's voice of speech signal during conversation. The cellular phone terminal system has a filter for filtering signal. The method comprises the steps of: waiting for a caller voice selector key input for a desired caller voice when a caller voice converter key is pressed during conversation; and setting an even or odd harmonic deletion bins on the frequency domain of the uncompressed speech signal correspondingly to the caller voice selector key input to change caller voice. | 12-22-2011 |
20120004907 | SYSTEM AND METHOD FOR BIOMETRIC ACOUSTIC NOISE REDUCTION - Embodiments of the invention provide a communication device and methods for generating enhanced audio signals. An audio signal comprising a speech signal and a noise signals is acquired at the communication device. A noise processor of the communication device detects a pitch estimation of the audio signal. Thereafter, the audio signal is processed based on the pitch estimation and processing parameters of the audio signals to remove noise signals and generate an enhanced audio signal. | 01-05-2012 |
20120084080 | Machine for Enabling and Disabling Noise Reduction (MEDNR) Based on a Threshold - The present invention provides a novel system and method for monitoring the audio signals, analyze selected audio signal components, compare the results of analysis with a threshold value, and enable or disable noise reduction capability of a communication device. | 04-05-2012 |
20120106756 | SYSTEM AND METHOD FOR A NOISE REDUCTION SWITCH IN A COMMUNICATION DEVICE - A switch system and novel method control the application of noise reduction upon a signal. | 05-03-2012 |
20120114140 | SYSTEM AND METHOD FOR A NOISE REDUCTION CONTROLLER IN A COMMUNICATION DEVICE - A system and method control the level of applied noise reduction, the level of noise reduction being influenced by monitoring audio signals, analyzing audio signal components, bandwidth of background noise, user preferences and other factors. | 05-10-2012 |
20120163623 | WIDEBAND NOISE REDUCTION SYSTEM AND A METHOD THEREOF - Systems and methods improve audio signals and include means and methods of reducing stochastic noise in wideband audio signals. Multiple microphones may acquire near and far end audio signals, the audio signals may undergo transformations via a general or specialized digital signal processor. | 06-28-2012 |
20120284022 | NOISE REDUCTION SYSTEM USING A SENSOR BASED SPEECH DETECTOR - Speech detection is a technique to determine and classify periods of speech. In a normal conversation, each speaker speaks less than half the time. The remaining time is devoted to listening to the other end and pauses between speech and silence. Embodiments of the current invention provide systems and methods that may be implemented in a communication device. A system may include one or more sensors for detecting information corresponding to a user. The user is in a state of verbal communication. The system further includes one or more sensors for determining periods of speech and non-speech, in the verbal communication, based on the detected information and the audio signal captured by the microphones. The determined periods of speech and non-speech may be used in the coding, compression, noise reduction and other aspects of signal processing. | 11-08-2012 |
20130060567 | Front-End Noise Reduction for Speech Recognition Engine - VoIP phones according to the present invention include a microphone, which may be internal or external, and allow the user to communicate unobtrusively, check voice mail and conduct other activities in an environment which can be noisy in general and extremely noisy sometimes. Speech recognition functionally may also be used to generate and send touch tone or DTMF tones such as in response to call trees or voice recognition functionality used by airlines, credit card companies, voice mail systems, and other applications. A system and method of audio processing which provides enhanced speech recognition is provided. Audio input is received at the microphone which is processed by adaptive noise cancellation to generate an enhanced audio signal. The operation of the speech recognition engine and the adaptive noise canceller may be advantageously controlled based on Voice Activity Detection (VAD). | 03-07-2013 |
20130066629 | Speech & Music Discriminator for Multi-Media Applications - The present invention relates to means and methods of classifying speech and music signals in voice communication systems, devices, telephones, and methods, and more specifically, to systems, devices, and methods that automate control when either speech or music is detected over communication links. The present invention provides a novel system and method for monitoring the audio signal, analyze selected audio signal components, compare the results of analysis with a pre-determined threshold value, and classify the audio signal either as speech or music. | 03-14-2013 |
20130226568 | AUDIO SIGNALS BY ESTIMATIONS AND USE OF HUMAN VOICE ATTRIBUTES - Disclosed embodiments include means and methods of enhancing the quality of an audio signal by estimations and manipulations of voice attributes. Disclosed embodiments include means and methods of estimating a pitch period of an input audio signal, converting the audio signal into the frequency domain using a FFT, decreasing the pitch estimation value based on a fundamental frequency of the signal based on a first predefined condition and increasing the fundamental frequency of the audio signal based upon a second predefined condition. | 08-29-2013 |
20130259263 | Removal of Wind Noise from Communication Signals - A special purpose machine measures and modulates communication signals that are parsed into frames. Frames of signals modulated and measured to have certain qualities are deemed to be the result of wind noise. Frames of wind noise are cancelled from further use within a communication system. | 10-03-2013 |
20130301844 | Voice Signals Improvements in Compressed Wireless Communications Systems - Improvements in voice signals transmitted within communication systems are obtained by use of adaptive filters, front and rear microphones, noise cancelling systems and other means and methods. Disclosed embodiments include the use of directional microphones, primary inputs, secondary inputs, adaptive weight generators, canceller outputs to improve signal to noise ratios and other communication attributes. | 11-14-2013 |
20140058726 | Automated difference recognition between speaking sounds and music - The present invention relates to means and methods of automated difference recognition between speech and music signals in voice communication systems, devices, telephones, and methods, and more specifically, to systems, devices, and methods that automate control when either speech or music is detected over communication links. The present invention provides a novel system and method for monitoring the audio signal, analyze selected audio signal components, compare the results of analysis with a pre-determined threshold value, and classify the audio signal either as speech or music. | 02-27-2014 |
20140214695 | SYSTEM AND METHOD TO VALUATE INTANGIBLE ASSET - Embodiments of the present invention describe a system and a corresponding method for valuating one or more patent applications. The system includes various modules to receive and analyze one or more main patent application to determine attributes for comparison with attributes of each of a plurality of reference applications. Further, a value determination module of the system may determine an aggregate dollar value for the main application based on a capital value for each element of the main application. Here, the capital value for each element is determined based on comparing the main application with each of the reference applications. | 07-31-2014 |
20140376924 | SYSTEM AND METHOD FOR GENERATING OPTICAL OUTPUT FROM AN ELECTRONIC DEVICE - An optical processing system for an electronic device is provided. The optical processing system includes a digital component for generating digital signals based on received signals from the electronic device. The optical processing system further includes an optical component for generating optical signals based on the digital signals. The optical processing system further includes a transmit component for transmitting the generated optical signals to an earpiece. The earpiece includes a converter for converting the optical signals into electrical signals, and a speaker for converting the electrical signals to sound. | 12-25-2014 |
20150063592 | VOICE SIGNALS IMPROVEMENTS IN COMPRESSED WIRELESS COMMUNICATIONS SYSTEMS - Methods and systems for enhancing signal quality are disclosed. A method includes receiving buffers of sound samples including a first microphone signal and a second microphone signal from a first and a second microphone; generating a first cardioid shape signal by subtracting a delayed second microphone signal from the first microphone signal; generating a second cardioid shape signal by subtracting the second microphone signal from a delayed first microphone signal; generating a first level output signal based on the first cardioid shape signal; detecting at least one speech and non-speech region of the first level output signal; generating a second level output signal based on the second cardioid shape signal, and at least one of the speech and non-speech regions of the first level output signal; and removing residuals of noise from the first level output signal based on adaptive weights output and generated second level output signal. | 03-05-2015 |
20150067113 | ADAPTIVE NETWORK CONTROL SYSTEM AND METHOD THEREOF - A centralized configuration controlling system for configuring network devices is provided. The centralized configuration controlling system includes a retrieval component for retrieving configuration data, and operating parameters related to performance of a plurality of network devices in a network. The centralized configuration controlling system includes a processing component for processing retrieved operating parameters of the plurality of network devices based upon predefined rules to generate revised configuration data for the plurality of network devices. The centralized configuration controlling system includes a configuration component for configuring the plurality of network devices based upon the revised configuration data. | 03-05-2015 |
20150071462 | METHODS AND SYSTEM FOR WIDEBAND SIGNAL PROCESSING IN COMMUNICATION NETWORK - The embodiments herein disclose a device and a method for controlling noise in a wideband communication system. In one embodiment herein, multiple microphones for receiving wideband audio signals are provided. A processor is configured to analyze each wideband audio signal received by each microphone. Further, unique signal patterns are generated based on each analyzed wideband signals for each microphone and the unique signal patterns are compared to detect any identical signal patterns. A controller is also provided for controlling gains of those microphones that are detected to be receiving wideband audio signal of identical signal patterns. | 03-12-2015 |