Abstract: Non-occluding active noise suppression apparatus and methods are disclosed. A housing includes an inlet to admit ambient sound and an outlet to output personal sound to the ear of a user. An acoustic path and an electronic path are provided from the inlet to the outlet within the housing. For a predetermined frequency range, a phase difference between the acoustic path and the electronic path is substantially 180 degrees.

Abstract: A demonstration system includes a demonstration processor including a wired audio output, a data interface, and an anchor point. A portable audio device includes a wireless interface for receiving first audio signals, a wired audio input for receiving second audio signals, a mixing circuit outputting third audio signals including audio content from both the first and second audio signals, an output audio transducer for receiving the third audio signals from the mixing circuit and outputting them as audible signals, a user interface, a data interface, and a programmable processor in communication with the user interface and the data interface. A cable bundle includes a security cable for connection between the anchor point and the portable audio device thereby preventing theft of the portable audio device, and electrical conductors connecting the wired audio output of the demonstration processor to the wired audio input of the portable audio device.

Abstract: Embodiments of the disclosed invention include a system and a method for providing, among other things, local calling name caller identification to a broadband phone, personalized user-specified actions associated with a plurality of users based on an incoming caller identification number to a broadband phone, and remote access to locally stored data on a broadband phone.

Abstract: A mobile device vibrational sound system includes a processing circuit configured to activate a selectively vibratable element based on a triggering event, and control operation of a speaker to provide a mitigation sound configured to at least partially cancel a vibrational sound resulting from activation of the vibratable element.

Abstract: A digital audio conferencing system has a fixed base station that is in communication with a far end (R.E.) system over a communication network. The base station is associated with a wireless loudspeaker and one or more wireless microphones. The base station operates to receive F.E. audio signals to be played by the wireless loudspeaker, and it operates to remove acoustic echo picked up by the wireless microphones. A first clock controlling F.E. audio signal sampling at the base station, and a second clock controlling audio signal sampling and at a wireless microphone are synchronized to one master, reference clock that controls the operation of the base station. Acoustic echo included in an audio signal picked up by a wireless microphone is removed by AEC functionality running in the base station.

Abstract: The present invention provides methods and systems for digitally processing audio signals in two-channel audio systems and/or applications. In particular, the present invention includes a first filter structured to split a two-channel audio input signal into a low frequency signal and a higher frequency signal. A M/S splitter is then structured to split the higher frequency signal into a middle and a side signal. A detection module is then configured to create a detection signal from the middle signal, which is used in a compression module configured to modulate the side signal to create a gain-modulated side signal. A processing module is then structured to combine the low frequency signal, middle signal, and the gain-modulated side signal to form a final output signal.

Abstract: Disclosed, in general, are devices that provide a substantially sound-tight chamber over a sound source while absorbing fields of sounds from the sound source. In general, the devices feature: an anechoic chamber that is configured to receive a sound source in a substantially sound-tight manner; an active noise canceling means in the anechoic chamber; and an anechoic channel that is in fluid communication with the ambient atmosphere.

Abstract: A desired signal is extracted with a higher accuracy from a mixed signal wherein a plurality of signals are mixed. At the time of extracting a first signal from a first mixed signal and a second mixed signal, said first mixed signal and second mixed signal having the first signal and second signal mixed therein, an estimate value of the first signal in the past is obtained as a first estimate value, and an estimate value of the second signal in the past is obtained as a second estimate value. Then, a first isolation signal is generated by subtracting the second estimate value from the first mixed signal, and a second isolation signal is generated by subtracting the first estimate value from the second mixed signal. Then, the signal generated using the first isolation signal and the second isolation signal is outputted as the first signal.

Abstract: A multiband limiter with selective sideband linking includes first and second frequency band splitters, a first and second plurality of limiters, first and second summers, and a plurality of selectable links coupling the first plurality of limiters to the second plurality of limiters. The first plurality of limiters each have a band input coupled to one of the first plurality of band outputs, a link port and a limiter output, and the first summer is receptive to the limiter outputs of the first plurality of limiters and has a first channel output. The second plurality of limiters each have a band input coupled to one of the second plurality of band outputs, a link port and a limiter output, and the second summer is receptive to the limiter outputs of the second plurality of limiters and has a second channel output.

Abstract: The present invention relates to coding of audio signals, and in particular to high frequency reconstruction methods including a frequency domain harmonic transposer. A system and method for generating a high frequency component of a signal from a low frequency component of the signal is described.

Abstract: An universal network interface device with an enclosure, an access module, a modem module, a switching power supply and a battery pack.

Abstract: The present invention is directed to a method and device for assigning a telephone number to a browsing session and for providing physical location information to a public safety answering point in association with a web-based chat or relay session.

Abstract: A third party automatically participates in a peer-to-peer communication session established between a first endpoint and a second endpoint. Once the peer-to-peer communication session is established, a third party receives a first user data provided by the first endpoint, and verifies the first user data. If the verification succeeds, the third party automatically participates in the peer-to-peer communication session.

Abstract: A method and audio signal processor for detecting feedback in an electrical amplification system divides a frequency spectrum into a plurality of frequency bands, classifies a tone present in an incoming audio signal into one of the plurality of frequency bands based on a frequency of the tone, selects a threshold value based on the frequency band into which the tone is classified, and disqualifies the tone from potentially being feedback if an amplitude of the tone is greater than an amplitude of a harmonic of the tone by less than the threshold value. The tone is deemed to be potentially feedback if the amplitude of the tone is greater than an amplitude of a plurality of harmonics of the tone by at least the threshold value.

Abstract: Examples of the disclosure provide variable step size (VSS) adaptive echo cancellation in the presence of near-end noise such as dense double talk without using an explicit double talk detector and/or without using a dual-filter. During a conversation, the present value for an error signal is monitored. Based on the monitored present value for the error signal, a first function is determined. A second function is determined based on long-term statistics describing a reference signal, a near-end noise signal, and the error signal. An adaptation coefficient is calculated for the VSS adaptive filter based on the determined first function and the determined second function. The calculated adaptation coefficient is used in the VSS adaptive filter for echo cancellation against interference due to the near-end noise signal during the conversation.

Abstract: A conferencing system and method that allows participants to review recorded conference information and to join the conference live are disclosed. Exemplary systems and methods continuously record or buffer at least a portion of a conference, such that participants joining late or that otherwise miss a portion of the conference can review a recording of the portion of the conference and catch up to the live portion of the conference.

Abstract: Methods and systems directed to retrieving voicemails from a voice mailbox server. In particular embodiments, a mailbox server may receive a notification from the voice mailbox server and connect to the voice mailbox server providing the credentials of a client device, and pull new voicemails for storage at the mailbox server. In particular embodiments, mailbox server periodically polls voice mailbox server for new voicemail messages. In particular embodiments, a client device polls or receives notification of new voicemails, and transmits a downloaded message to the mailbox server.

Abstract: System and methods are provided for voice enhancement in audio conferencing among a plurality of participants. An example system includes a signal processor, a pre-processing component, and a voice-enhancement component. The signal processor is configured to generate a first mixed signal based at least in part on a first audio signal associated with a first remote participant and a local audio signal associated with a local participant. The pre-processing component is configured to generate a first input signal and a second input signal based at least in part on the first mixed signal and a second audio signal associated with a second remote participant. In addition, the voice-enhancement component is configured to generate a first output signal to be transmitted to the second remote participant based at least in part on the first input signal and the second input signal.

Abstract: A system, methods, and devices that allow a listener to compensate for variability in the physical configuration and characteristics of individual ears to optimize the sound quality and listening experience for sound reproduction or amplification through an earphone, earbud, hearing aid, or the like. The present invention comprises one or more earphones, earbuds, hearing aid, dongle, or similar devices with an equalizer or equalizing circuitry or processing program contained therein, or in a circuit with the earphone, earbud, hearing aid or similar device. The equalizer or equalizing circuitry or processing program may be located in a separate device attached or in electronic communication, wired or wirelessly, to the earphone, earbuds or hearing aid, such as a remote. It also may be located in the sound-providing or music-providing device. The equalizer settings can be adjusted manually or automatically for each ear. An amplifier, or amplifying circuitry, also may be present.

Abstract: A bidirectional communication system includes—a first compensating unit to which a first output unit and a first input unit are assigned that is configured to compensate for undesired feedback from the first output unit in the first input unit with generation of first compensation data and at least one second compensating unit that is configured like the first compensating unit and is physically separate from the first compensating unit. The second compensating unit has a second output unit but no input unit is assigned to it. The first compensating unit and the second compensating unit are connected by interfaces via which the first compensation data generated by the first compensating unit can be sent to the second compensating unit so that second compensation data can be generated in the second compensating unit based on the first compensation data.