Patent application number | Description | Published |
20100260351 | Speakerphone Feedback Attenuation - A method is disclosed for acoustic feedback attenuation at a telecommunications terminal. A speakerphone equipped with a loudspeaker and two microphones is featured. Signals from the two microphones are subjected to a calibration stage and then to a runtime stage. The purpose of the calibration stage is to match the microphones to each other by advantageously using both magnitude and phase equalization across the frequency spectrum of the microphones. During the runtime stage, the microphones monitor the ambient sounds received from sound sources, such as the speakerphone's users and the loudspeaker itself, during a conference call. The speakerphone applies the generated set of filter coefficients to the optimized microphone's signals. By combining the signal from the reference microphone with the filtered signal from the optimized microphone, the speakerphone is able to attenuate the sounds from the loudspeaker that would otherwise be transmitted back to other conference call participants. | 10-14-2010 |
20100272249 | Spatial Presentation of Audio at a Telecommunications Terminal - The present invention utilizes pseudo-stereo for the communication of secondary information to the user of a telecommunications terminal, such as a speakerphone. In particular, the terminal utilizes a method for the presentation of secondary information to the user of the terminal in a teleconference call by adjusting the spatial properties of the monaural audio received at the user's terminal. An audio communication is modified so as to appear that the communicated audio is arriving from a particular direction in relation to the user's approximate position, wherein the direction that is assigned to the audio depends on one or more characteristics of the call participant who is originating the audio. Each characteristic of a call participant on a call can comprise, while not being limited to, the customer satisfaction of the call participant, the urgency of a need of the call participant, the group membership of the call participant, or the product ownership of the call participant. | 10-28-2010 |
20100302049 | Notifying a User of a Telecommunications Terminal of Disrupted Audio - A user of a telecommunications terminal is made aware when the user's voice is disrupted by echo suppression, which notifies the user that he or she can adjust his or her speaking pattern, or move closer to the microphone in order to stop the clipping. | 12-02-2010 |
20110311064 | SYSTEM AND METHOD FOR STEREOPHONIC ACOUSTIC ECHO CANCELLATION - Disclosed herein are systems, methods, and non-transitory computer-readable storage media for stereophonic acoustic echo cancellation. The method includes collecting, at a same time, a first audio sample of an audio source from a first omnidirectional microphone and a second audio sample of the audio source from a second omnidirectional microphone. The method includes delaying the second audio sample by a first amount of time to yield a delayed second audio sample and combining the delayed second audio sample with the first audio sample to produce a first channel, then delaying the first audio sample by a second amount of time to yield a delayed first audio sample and combining the delayed first audio sample with the second audio sample to produce a second channel. Then the method includes outputting the first channel and the second channel as a stereo audio signal of the audio source. | 12-22-2011 |
20120093338 | SYSTEM AND METHOD FOR SPATIAL NOISE SUPPRESSION BASED ON PHASE INFORMATION - Disclosed herein are systems, methods, and non-transitory computer-readable storage media for suppressing spatial noise based on phase information. The method transforms audio signals to frequency-domain data and identifies time-frequency points that have a parameter (e.g., signal-to-noise ratio) above a threshold. Based on these points, unwanted signals can be attenuated the desired audio source can be isolated. The method can work on a microphone array that includes two microphones or more. | 04-19-2012 |
20130250779 | SYSTEM AND METHOD FOR END-TO-END RTCP - Systems, methods, and non-transitory computer-readable storage media for implementing real-time transport control protocol to obtain end-to-end session information. The system receives a real-time transport control protocol extension associated with a real-time transport control protocol packet in a communication session, wherein the real-time transport control protocol extension comprises an instruction for transmitting real-time transport control protocol data based on a triggering event, and wherein the real-time transport control protocol extension is configured to propagate along the communication session. Next, in response to the triggering event, the system transmits the real-time transport control protocol data to an address defined by the instruction as a destination address for receiving information associated with the triggering event. | 09-26-2013 |
20130250786 | SYSTEM AND METHOD FOR END-TO-END CALL QUALITY INDICATION - Disclosed herein are systems, methods, and non-transitory computer-readable storage media for generating an end-to-end quality indication associated with a communication session. Based on a real-time transport control protocol message, the system identifies a media path associated with a communication session. Next, the system determines a respective media leg quality for a plurality of media legs in the media path. Based on the respective media leg quality, the system then determines a media path quality. The system can also generate a media quality indication based on the media path quality, and display the media quality indication. | 09-26-2013 |
20140169534 | METHOD, APPARATUS, AND SYSTEM FOR PROVIDING REAL-TIME PSAP CALL ANALYSIS - Methods, apparatus, and systems are provided such that a Public Safety Answering Point (PSAP) may utilize a new model to handle Open Line emergency calls, including audio optimization, automation, analysis, and presentation. Embodiments of the present disclosure assist with the difficult task of identifying background noise while trying to listen and talk to a caller, and give the best possible audio from the caller to the emergency call-taker or dispatcher. More particularly, an audio stream is split into at least two instances, with a first instance being optimized for speech intelligibility and provided to a call-taker or dispatcher and a second instance being provided for background sound analysis. Accordingly, the new PSAP Open Line model may allow for significantly more efficient emergency assessment, location, and management of resources. | 06-19-2014 |
20140270144 | PUBLIC SAFETY ANSWERING POINT LANGUAGE DETECTION - A Public Safety Answering Point (PSAP) is disclosed. The PSAP is configured to enable the detection of language preferences, capabilities, or inabilities and, based on such detection, assist the PSAP agent in assisting the PSAP caller. The PSAP may additionally or alternatively utilize the detection of language information to assist in the decision to route or re-route the PSAP caller to appropriate PSAP resources. | 09-18-2014 |