Patent application number | Description | Published |
20100020940 | FAR-END SOUND QUALITY INDICATION FOR TELEPHONE DEVICES - A sound quality metric may be determined at a near-end telephone system, the sound quality metric associated with far-end sound quality received at a far-end telephone system. A signal adjustment may be determined, based on the sound quality metric. The signal adjustment may thus be provided at an earpiece of the near-end telephone system. In this way, a user of the near-end telephone system may be alerted that the sound quality of a far-end user is unacceptably low, so that the near-end user may take corrective action at the near end to improve the far-end sound quality. | 01-28-2010 |
20100020986 | SINGLE-MICROPHONE WIND NOISE SUPPRESSION - A technique for suppressing non-stationary noise, such as wind noise, in an audio signal is described. In accordance with the technique, a series of frames of the audio signal is analyzed to detect whether the audio signal comprises non-stationary noise. If it is detected that the audio signal comprises non-stationary noise, a number of steps are performed. In accordance with these steps, a determination is made as to whether a frame of the audio signal comprises non-stationary noise or speech and non-stationary noise. If it is determined that the frame comprises non-stationary noise, a first filter is applied to the frame and if it is determined that the frame comprises speech and non-stationary noise, a second filter is applied to the frame. | 01-28-2010 |
20100217590 | SPEAKER LOCALIZATION SYSTEM AND METHOD - A system and method for performing speaker localization is described. The system and method utilizes speaker recognition to provide an estimate of the direction of arrival (DOA) of speech sound waves emanating from a desired speaker with respect to a microphone array included in the system. Candidate DOA estimates may be preselected or generated by one or more other DOA estimation techniques. The system and method is suited to support steerable beamforming as well as other applications that utilize or benefit from DOA estimation. The system and method provides robust performance even in systems and devices having small microphone arrays and thus may advantageously be implemented to steer a beamformer in a cellular telephone or other mobile telephony terminal featuring a speakerphone mode. | 08-26-2010 |
20100223054 | SINGLE-MICROPHONE WIND NOISE SUPPRESSION - A technique for suppressing non-stationary noise, such as wind noise, in an audio signal is described. In accordance with the technique, a series of frames of the audio signal is analyzed to detect whether the audio signal comprises non-stationary noise. If it is detected that the audio signal comprises non-stationary noise, a number of steps are performed. In accordance with these steps, a determination is made as to whether a frame of the audio signal comprises non-stationary noise or speech and non-stationary noise. If it is determined that the frame comprises non-stationary noise, a first filter is applied to the frame and if it is determined that the frame comprises speech and non-stationary noise, a second filter is applied to the frame. | 09-02-2010 |
20110096915 | AUDIO SPATIALIZATION FOR CONFERENCE CALLS WITH MULTIPLE AND MOVING TALKERS - Systems and methods are described that utilize audio spatialization to help at least one listener on one end of a communication session differentiate between multiple talkers on another end of the communication session. In accordance with one embodiment, an audio teleconferencing system obtains speech signals originating from different talkers on one end of the communication session, identifies a particular talker in association with each speech signal, and generates mapping information sufficient to assign each speech signal associated with each identified talker to a corresponding audio spatial region. A telephony system communicatively connected to the audio teleconferencing system receives the speech signals and the mapping information, assigns each speech signal to a corresponding audio spatial region based on the mapping information, and plays back each speech signal in its assigned audio spatial region. | 04-28-2011 |
20120250872 | Method and System for Modeling External Volume Changes Within an Acoustic Echo Canceller - A method and system are provided in which a device, such as an acoustic echo canceller, may reduce the residual echo that may be heard at the far end of a conversation when an external speaker volume is changed. The device may compute a gain based on an echo estimate produced by a filter and on a near-end signal comprising audio information. The gain may be based on a correlation of the echo estimate and the near-end signal that tracks the changes in volume. Once computed, the gain may be validated to ensure that it is being applied when appropriate. The echo estimate may be adjusted by first applying the gain to an output of the filter and subsequently scaling a value of each of the coefficients of the filter based on the gain. The gain may be smoothed out over consecutive frames based on several adaptation schemes. | 10-04-2012 |
20130163781 | BREATHING NOISE SUPPRESSION FOR AUDIO SIGNALS - Systems and methods are described herein for detecting and suppressing breathing noise in an audio signal. First, systems and methods are described that analyze audio signals generated by two or more microphones to detect breathing noise in one of the audio signals and that leverage the multiple microphones to suppress detected breathing noise in a manner that minimizes signal distortion. Then, systems and methods are described that are capable of analyzing the audio signal generated by a single microphone to detect breathing noise in the audio signal and thereafter suppress it. | 06-27-2013 |
20140278397 | SPEAKER-IDENTIFICATION-ASSISTED UPLINK SPEECH PROCESSING SYSTEMS AND METHODS - Methods, systems, and apparatuses are described for performing speaker-identification-assisted speech processing in an uplink path of a communication device. In accordance with certain embodiments, a communication device includes speaker identification (SID) logic that is configured to identify the identity of a near-end speaker. Knowledge of the identity of the near-end speaker is then used to improve the performance of one or more uplink speech processing algorithms implemented on the communication device. | 09-18-2014 |
20140278417 | SPEAKER-IDENTIFICATION-ASSISTED SPEECH PROCESSING SYSTEMS AND METHODS - Methods, systems, and apparatuses are described for performing speaker-identification-assisted speech processing. In accordance with certain embodiments, a communication device includes speaker identification (SID) logic that is configured to identify a user of the communication device and/or the identity of a far-end speaker participating in a voice call with a user of the communication device. Knowledge of the identity of the user and/or far-end speaker is then used to improve the performance of one or more speech processing algorithms implemented on the communication device. | 09-18-2014 |
20140278418 | SPEAKER-IDENTIFICATION-ASSISTED DOWNLINK SPEECH PROCESSING SYSTEMS AND METHODS - Methods, systems, and apparatuses are described for performing speaker-identification-assisted speech processing in a downlink path of a communication device. In accordance with certain embodiments, a communication device includes speaker identification (SID) logic that is configured to identify the identity of a far-end speaker participating in a voice call with a user of the communication device. Knowledge of the identity of the far-end speaker is then used to improve the performance of one or more downlink speech processing algorithms implemented on the communication device. | 09-18-2014 |