Abstract: According to some aspects, a system for controlling an electronic device including an audio accessory coupled to the electronic device. The audio accessory has at least one speaker adapted to provide audio output and a plurality of resistive switches. The electronic device has a bias voltage source adapted to provide power to the resistive switches via a bias resistor and a ground connection, and a measurement module. The measurement module is adapted to monitor a bias point to determine which of the at least one switch has been engaged based on effect of the resistive switches on the ground offset voltage after compensating for a ground offset voltage caused by the audio output.

Abstract: Practical speaker connection is identified using a device having a sound channel of a 5.1 channel or 7.1 channel, and a device is provided that can easily reproduce the optimum multiple channels. Actual speaker arrangement can be identified by, for example, measuring the impedance of a terminal at the side of an audio amplifier. If incorrect connection is found, a warning is issued. This information is transmitted to a signal source with an EDID and a signal with the optimum a number of sound channel is sent. The EDID is also used for the connection with a display unit and the speaker connection with which the display unit is provided uniquely. For example, a sound through the 7.1 channel is easily reproduced using the speaker of the display unit in the channel of the front speaker.

Abstract: Systems and methods are provided for playback of audio content in an “audition mode.” A system may be providing audio content to be rendered by a group of playback devices, when receiving a request to audition a second audio content with at least one playback device from the group of playback devices. The system may then suspend rendering of the first audio content at the at least one playback device, and provide the second audio content to be rendered by the at least one playback device for a duration of time. Upon exiting audition mode, either by completion of the second audio content, expiration of the duration of time, or request to exit audition mode, the system may resume rendering of the first audio content by the at least one playback device.

Abstract: Practical speaker connection is identified using a device having a sound channel of a 5.1 channel or 7.1 channel, and a device is provided that can easily reproduce the optimum multiple channels. Actual speaker arrangement can be identified by, for example, measuring the impedance of a terminal at the side of an audio amplifier. If incorrect connection is found, a warning is issued. This information is transmitted to a signal source with an EDID and a signal with the optimum a number of sound channel is sent. The EDID is also used for the connection with a display unit and the speaker connection with which the display unit is provided uniquely. For example, a sound through the 7.1 channel is easily reproduced using the speaker of the display unit in the channel of the front speaker.

Abstract: An end-of-branch (EOB) module system for an audio signal distribution system having a wired trunk and a plurality of wired branches extending communicatively from such trunk, the EOB module system including: a plurality of EOB modules including one EOB module electronically coupled at each distal end of each branch and trunk of the audio signal distribution system, where each EOB module of the plurality of EOB modules has a unique address together forming a plurality of unique addresses; a test system able to send a test carrier signal encoded with any one unique address of the plurality of unique addresses at a time onto the trunk; and a switch within each EOB module, responsive to its unique address to place an end-of-line (EOL) load on its respective branch or trunk, and where power for operation of each EOB module is provided by rectification of the test signal.

Abstract: A method for transmitting wireless audio streams in an audio system comprising a first transmitter unit, the method includes: transmitting a first audio block in a first audio frame, the first audio block comprising a first primary audio package having a transmitter unit address of the first transmitter unit; transmitting a first primary pilot package, the first primary pilot package comprising the transmitter unit address of the first transmitter unit, a first primary time offset, and a channel identifier of a first primary audio package of a second audio block in a second audio frame; and transmitting the first primary audio package of the second audio block at a start time depending on the first primary time offset and the channel identifier.

Abstract: A home use sound reproduction system for Hi-fi, with digital signal transfer from a playback unit via a control unit to one or more active loudspeakers, each including or arranged beside an amplifier unit. The control unit is arranged to control sound parameters and send both a digital sound information signal and a power signal for powering the amplifier units, and to superimpose the single ended or differential digital signal together with the power signal on at least one common lead in a cable.

Abstract: A wireless audio client device such as a headset worn by a user allows the user to talk with multiple other devices using different communication protocols. In one approach, the wireless audio client device is a slave device which pairs with multiple master devices such as a game console and cell phone. The wireless audio client device uses a common set of peripherals such as a speaker, microphone, RF antenna, battery, status lights and control buttons. Processing circuitry is provided in one or more chips, to handle the different communication protocols. The wireless audio client device can automatically interrupt a game chat to allow the user to accept an incoming phone call, or can prompt the user to accept the call. Or, the wireless audio client device can play audio from the cell phone while the game chat continues.

Abstract: Managing audio of a device including transmitting a signal through a port of the device in response to an audio device coupling to the port, initializing an audio mixer of the device in response to detecting the signal, and configuring the audio mixer to manage audio transferred between the device and the audio device.

Abstract: An audio signal processing method and a broadcasting output apparatus using the audio signal processing method are provided. The audio signal processing method includes selecting an audio signal to be processed from among a plurality of audio signals in which the same audio data is compressed in different formats, when the plurality of audio signals are received; and processing the selected audio signal. Therefore, it is possible to select a high quality audio signal from among audio signals compressed in various audio formats and to provide a user with the high quality sound.

Abstract: According to an exemplary embodiment of the present invention, a terminal and a method for controlling an audio output path is provided. The terminal includes: an audio output path setting unit to determine an audio output path for one or more audio data when one or more audio event occurs; an audio output unit to output a first audio data in a first audio output path; and a data communication unit to transmit one or more audio data other than the first audio data to external terminal(s) by setting a second audio output path.

Abstract: An audio playback system used in a handheld electronic device is provided. The audio playback system comprises an audio interface, a control module, an audio processing module and at least two audio playback modules. The audio interface receives a digital audio stream. The control module generates audio channel mapping information. The audio processing module processes the digital audio stream to convert the digital audio stream to a plurality of analog audio signals and performs a channel switching process according to the audio channel mapping information. The audio playback modules output the analog audio signals after the channel switching process.

Abstract: A system for wireless control of audio signal switching. The system includes a remote unit, having a physically actuated switch and a remote unit channel status indicator, and a main unit. The main unit includes a main unit transceiver and one or more relays which may switch the path of the audio signal or provide remote control of external devices, in response to input at the physically actuated switch. The remote unit may be programmed with effects patches, i.e., combinations of effects to be activated simultaneously, to enable the user to select a combination of effects with a single push of a button at the remote unit.

Abstract: This document discusses, among other things, an audio jack detection circuit configured to be coupled to an audio jack receptacle of an external device. The audio jack detection circuit configured to receive to receive audio jack receptacle information, to disable an oscillator when the audio jack receptacle information indicates that the audio jack receptacle is empty, and to enable the oscillator when the audio jack receptacle information indicates that the audio jack receptacle includes an audio jack.

Abstract: An electronic device comprises a first output module, a judgment module, a first switch module, a second output module, an operation module, a second switch module and a play module. The first output module generates a first audio signal. The second output module generates second audio signals. If the first audio signal is generated, the judgment module generates a first control signal. The first switch module switches to the first state and transmits the first audio signal. If the first audio signal is not generated, the judgment module generates a second control signal. The operation module generates a selecting signal. The second switch module switches to a second audio signal according to the selecting signal and transmits to the first switch module. The first switch module switches to the second state and transmits the selected second audio signal. The play module plays the audio signal.

Abstract: A system for generating 3D sound with adjustable source positioning includes a first stage and a second stage, which is coupled to the first stage and to a speaker array that includes a plurality of speakers. The first stage is configured to position a plurality of virtual sound sources through a positioner output. The second stage is configured to generate a 3D signal for the speaker array based on the positioner output. The speaker array is configured to generate a 3D sound stage including the virtual sound sources based on the 3D signal. The first stage may be further configured to reposition the virtual sound sources.

Abstract: This document provides apparatus and methods for providing low-power operation of an interface circuit during an interval when a port of the interface circuit is in an uncoupled state.

Abstract: A headphone system, installed in a portable electronic device for outputting sounds, includes an audio wire for transmitting audio signals, a sound output device for receiving and demonstrating the audio signals transmitted by the audio wire, an audio processing unit for receiving audio data and outputting the audio signals corresponding to the audio data via the audio wire according to a control signal, an automatic reel wound around by the audio wire for rolling up the audio wire, a length detection unit for detecting a rotating distance and a rotating direction of the automatic reel, and a control unit for outputting the control signal to the audio processing unit according to a detection result of the length detection unit, to control operations of the audio processing unit.

Abstract: An audio processing system that includes an audio filter having one or more elements capable of having state, such as a capacitor, an inductor or a delay. A saturation detector is configured to detect saturation of the audio filter and to generate an output when saturation of the filter is detected, such as a switch control signal. A switch is connected to the audio filter and the saturation detector, wherein the state of one or more of the elements of the audio filter is changed when the saturation detector provides the output to the switch, such as when the switch shorts the element and causes the energy stored in the element to be dissipated.

Abstract: In an audio network system constructed from a main node and a plurality of satellite nodes each having a plurality of ports, the main node generates and transmits a main packet including audio signals of a plurality of channels. Each satellite node selects one of the plurality of ports in turn, and confirms whether the main packet arrives at the selected port every predetermined period or not. When the main packet arrives at the selected port every predetermined period, the main packet is received via the port by continuing selection of the port. In the case where reception of the main packet is lost, one is selected from the plurality of ports in turn, the operation to confirm arrival of the main packet is restarted, and another port at which the main packet arrives at the present stage is automatically found.

Abstract: An on-request wireless audio data streaming system is configured for providing on-request wireless audio data streaming to one or more wireless device apps on one or more wireless devices. The system comprises a directory server, audio capture interfaces and a wireless interface. The directory server coordinates the various components of the system. The audio capture interface obtains audio signals from sources of audio signals. The directory server maintains a list of available audio signals and broadcasts the list via the wireless interface. Wireless device apps receive the list, present it to their users. A user can select one of the available audio signals and request a subscription to it. The directory server maintains a list of the subscribed audio signals and associated subscribers. The audio capture interfaces generate and transmit via the wireless interface the audio data streams of the subscribed audio signals.

Abstract: An audio content playback method for a portable terminal The audio content playback method includes checking a channel that is supportable by audio content that is currently engaged in group's simultaneous playback, in group's simultaneous playback of the audio content. The method includes allocating a channel to each of devices included in a group based on position information of each device included in the group or based on an input state in a user interface environment that is preset for channel allocation for each device included in the group, and transmitting the allocated channel information to each device included in the group to allow the device to select its allocated channel and play the audio content.

Abstract: Provided is an output control apparatus connected to an audio output apparatus controlling output of audio data, including: a receiving unit configured to receive encoded data obtained by encoding multi-channel audio data; a decoding unit configured to decode the encoded data; an output control unit configured to control output of a predetermined number of channels of audio data among the multi-channel audio data obtained by the decoding; a transmitting unit configured to transmit any one of audio data different from the audio data of which the output is controlled by the output control unit among the multi-channel audio data obtained by the decoding and the encoded data to an audio output apparatus connected through an integrated cable formed by integrating at least a video line, an audio line, and a control line; and a control unit configured to control the audio output apparatus through the integrated cable.

Abstract: A system for providing hearing assistance to at least one user, having: at least one audio signal source; a first transmission unit with a digital transmitter for applying a digital modulation to the audio signals and to transmit the audio signals via a digital audio link; a second transmission unit with a digital receiver for receiving the audio signals transmitted via the digital audio link and an analog transmitter for applying an analog modulation to the received audio signals and to transmit the audio signals via an analog audio link; at least one first receiver unit having a digital receiver for receiving signals from the digital transmitter and at least one second receiver unit with an analog receiver for receiving signals from the analog transmitter; and a device for stimulating the hearing of a user according to audio signals supplied from the first and second receiver units.

Abstract: An audio signal processing device includes multiple input reception units to which analog audio signals, on which watermark information indicating identification information is superimposed, are input, an extraction unit that is adapted to extract the identification information from each of the analog audio signals input to the multiple input reception units, and a display unit for performing display depending on the identification information extracted by the extraction unit in correspondence with the input reception unit to which the analog audio signal, from which the identification information is extracted, is input, or signal processing unit for performing signal processing depending on the identification information extracted by the extraction unit for the analog audio signal, from which the relevant identification information is extracted, and outputting the processed analog audio signal.

Abstract: A method of controlling a wireless audio signal in order to avoid frequency interference between a display apparatus with a multi-view function and glasses with a function of receiving a wireless audio signal is provided. The method of controlling a wireless audio signal in a wireless audio signal transmitting device includes: pairing with a wireless audio signal receiving device using a first frequency band; detecting frequency interference by an external device other than the paired wireless audio signal receiving device; scanning a frequency when frequency interference is detected; determining whether a frequency change is needed using information related to the scanned frequency; and changing an audio signal transmitting frequency when frequency change is needed.

Abstract: A system and method is introduced to facilitate the handover process of performers who are using digital vinyl systems (DVS). A DVS may be connected to an existing audio setup during the playing of another performer without interrupting the other performer and without disconnecting any connections in the existing audio setup. When the DVS is connected and a handover process is required, a switch is activated to select the DVS as the current active device for use. A DVS may be disconnected from an existing audio setup without interrupting another performer. The system may be implemented as part of an audio device or as a separate stand alone device.

Abstract: An apparatus and a method for outputting an audio signal in a portable terminal are provided. The portable terminal for outputting an audio signal includes an ear jack, a modem, and an amplifier. The ear jack connects the portable terminal with one of an earphone and an external apparatus. The modem detects whether one of the earphone and the external apparatus is connected to the ear jack. When connection of the external apparatus is detected, the amplifier high power-amplifies the audio signal and outputs the same to the external apparatus according to a control of the modem.

Abstract: There is provided a method of frequency assignment of wireless radio audio transmission systems having a plurality of wireless transmitters and at least one wireless receiver. The wireless transmitters can represent first wireless transmitters which in the switched-on condition can approach another wireless transmitter below an established minimum spacing and second wireless transmitters which in the switched-on condition cannot approach below the minimum spacing. The wireless transmitters serve for example to transmit an audio signal wirelessly to the at least one wireless receiver. The transmission frequencies of the first wireless transmitters are assigned having regard to possible intermodulation effects. The transmission frequencies of the second wireless transmitters are assigned having regard to the relative spatial distances of the second wireless transmitters relative to each other.

Abstract: A first computer is remotely accessed by a second computer. Sound output is generated at the first computer, but is selectively muted at the first computer and transmitted to, and output at, the second computer.

Abstract: The present invention relates to an apparatus and concomitant method for providing a splitter in a notification system. More specifically, the present invention provides a splitter, e.g., between an audio power booster and at least one notification appliance in a supervised emergency voice evacuation system.

Abstract: An apparatus for receiving audio data from a nomadic device is provided. The apparatus comprises a first portable speaker for being operably coupled to the nomadic device. The nomadic device receives first information indicative of a first crossover frequency for the first portable speaker and determines the first crossover frequency based on the first information. The nomadic device transmits the audio data to the first portable speaker in accordance to the first crossover frequency. The first portable speaker is configured to playback the audio data at the first crossover frequency.

Abstract: An integrated audio/communication system for use in a motor vehicle includes a processing unit that selectively executes control routines/programs based upon the operational mode of the system. The system may operate in a audio playback mode, and in a telephony mode. In the audio playback mode the processing unit executes a control routine/program associated with audio playback. Whereas, in the telephony mode the processing unit executes a control routine/program associated with telephony. The operational mode of the system may be switched from audio playback to telephony, and visa versa. Selectively configuring the processing unit based upon the operational mode of the system, and allowing the system to easily transition between modes, provides a highly integrated audio/communication system for use in a motor vehicle.

Abstract: An audio control system may receive a plurality of audio input signals. A switch or multiplexer may switch one of the plurality of audio input signals from respective audio sources to a power amplifier. A controller in communication with the multiplexer may control switching of the multiplexer. A display may provide the user with information regarding the switching of the audio signal inputs. A user interface may permit the user to manually switch the audio source. A signal detector in communication with an audio input signal may detect a signal from a priority source. When the signal from the priority source is detected, the controller may direct the multiplexer to route the signal from the priority source to the power amplifier.

Abstract: Methods, systems and computer-readable medium reduce and/or eliminate errors in coding/decoding of streamed audio due to resetting of decoder state values based on playback buffer access. An inaudible compensation signal is included with the audio signal. The compensation signal is generated having a characteristic selected so that the encoded streamed audio signal substantially matches the reset state values at block boundaries. In an ADPCM example, the compensation signal is chosen such that the sum of the compensation signal and the original audio signal (=the compensated audio signal) has the characteristic that, at the block boundaries, the compensated audio signal matches the initial predictor value.

Abstract: An electronic circuit comprises one or more upstream stages and two or more downstream stages positioned, in a processing direction of the signals, downstream of the upstream stage. A plurality of configurable connections is present between the upstream stage and the downstream stages. The connections are configurable to provide a predetermined communication path between a respective upstream stage and one or more selected downstream stage selected from the two or more downstream stages and to communicatively disconnect the upstream stage from not selected downstream stages. The electronic circuit may for example be an amplifier circuit.

Abstract: A system and method for selectively switching between a plurality of audio channels are provided. The system and method of the present disclosure will enable a user to listen to desired audio content, e.g., music with a total lack of distraction while selectively allowing certain important and selected sounds to interrupt the audio content. The system for selectively switching between a plurality of audio channels includes an audio content device (ACD) for supplying audio content on a first channel; at least one microphone input device for generating an acoustic signal from sound external to the system on a second channel; an audio signal processing control unit (ASPCU) for receiving the audio content on the first channel and the acoustic signal on the second channel and for selectively switching between the first and second channel; and an audio output device (AOD) for audibly producing sounds from the selected channel.

Abstract: A method for controlling presentation of data through a wireless home entertainment hub in a home entertainment system includes obtaining a registration for one or more source devices and for one or more sink devices. An indication is received at the wireless home entertainment hub that at least one of the source devices has become active. An instruction is transmitted to the sink devices to receive data from the at least one active source device. An indication is transmitted to at least one active source device that at least one of the sink devices is ready to receive data.

Abstract: The invention relates to an audio processing device (1) including: at least one connector (2, 7), suitable for receiving data defining an input sound signal; a processing module (5, 6) suitable for determining at least one signal intended for a loudspeaker (12, 13) as a function of said defining data, a communication module (8, 9) for communicating with at least one other audio processing device, according to claim 1; said device being characterized in that it furthermore includes a detection module (4) suitable for detecting the proximity of another device according to claim 1 and in that the processing module is suitable for determining said signal intended for the loudspeaker as a function furthermore of a number of other detected device(s).

Abstract: A system includes a housing, a speaker included in the housing, and a first transceiver to wirelessly transmit and receive audio content and control information. The speaker is able to produce audible signals from the audio content received by the transceiver.

Abstract: Systems, methods, apparatus, and articles of manufacture to provide for low-latency delivery and playback of audio are disclosed. In one embodiment, an example audio system includes multiple playback devices including a primary device and one or more secondary devices, whereby, the primary device establishes and controls a peer-to-peer network that connects, wirelessly or wired, to each of the satellite devices. An example audio device contains a channel selector, a control interface, and an audio interface. In some embodiments the control interface is used to transmit control information to another device on a first frequency channel, and the audio interface is used to transmit audio information to another device on a second frequency channel.

Abstract: A detection circuit of an electronic device, includes a jack circuit, a first switch, a second switch, and a detection end. The jack circuit includes a type detection pin and a connection detection pin. The first switch includes a first control end. The connection detection pin is connected to the first control end to control the first switch on or off according to whether the audio device is connected to the electronic device. The second switch is connected to ground via the first switch. The second switch includes a second control end. The type detection pin is connected to the second control end to control the second switch on or off according to the type of the audio device. The detection end is connected to the first switch via a first resistor, and is connected to the second switch via a second resistor. The detection end is adapted to generate different signals to indicate a connection status of the electronic device and the audio device.

Abstract: Where information is to be conveyed as acoustic waves, embodiments of the present invention provide a transmitter capable of causing acoustic waves that convey information to be not easily perceived by the human ear. A transmitter, being an apparatus that converts various types of encoded information into acoustic wave(s) in the audible spectrum and carries out transmission thereof, comprises microphone(s) that cause ambient sound(s) from location(s) at which acoustic wave(s) is/are transmitted to be input as ambient sound signal(s); peak frequency detector(s) that detect, within ambient sound signal(s), peak frequency or frequencies of major constituent(s) of ambient sound(s); carrier wave generator(s) that generate carrier waves at a plurality of frequencies that are natural number multiples of peak frequency or frequencies and that can be used to mask ambient sound(s); and modulator(s) that modulate a plurality of carrier waves with baseband signal(s).

Abstract: According to one embodiment, an electronic apparatus includes a speaker, a terminal, an amplifier, a power supply circuit, a setting module, a detection module, and a controller. The terminal is configured to input an audio signal from an external device. The amplifier is configured to amplify the audio signal, and to output audio from the speaker. The power supply circuit is configured to supply power to the amplifier. The setting module is configured to set data which indicates whether audio output from the speaker is to be enabled or disabled when the apparatus is in a non-operative state. The detection module is configured to detect a predetermined state of the apparatus. The controller is configured to control the power supply circuit, based on the data and the predetermined state, in order to supply the power to the amplifier when the apparatus is in the non-operative state.

Abstract: A multi-channel broadcasting system using a digital matrix amplifier performing the setting of respective equipment is provided to control the model equipment through a digital master controller. An 8-channel audio input unit 66 is electrically connected to a digital audio mixer. Sound source equipment connection terminals are electrically connected to the sound equipment. A data converter unit 46 converts each data and a contact point signal. An audio matrix IC 60 outputs an input sound source signal to an arbitrary channel. A pair of audio output terminals transmits the output signal of the audio matrix IC.

Abstract: An acoustic sound system usable in electronic entertainment systems that generates highly directional sound. The directed acoustic sound system includes a parametric audio sound system having a modulator for modulating an ultrasonic carrier signal with a processed audio signal, a driver amplifier for amplifying the modulated signal, and a parametric loudspeaker for projecting the modulated and amplified signal through the air for subsequent regeneration of the audio signal along a pre-selected path. The acoustic sound system allows a user to select the parametric loudspeaker, a connectable non-directional loudspeaker, or both loudspeakers for producing audible sound. The acoustic sound system may be employed in the home, in the workplace, or in any other environment where audio leakage is undesirable.

Abstract: A switching operation is performed in response to an externally applied DC control signal from an external load. An input connector receives an input audio signal from an external audio source, and an output connector that provides an audio output signal. A DC isolator couples the input audio signal from the input connector as the audio output signal on the output connector while isolating the externally applied DC control signal from the input connector. A switch is responsive to the externally applied DC control signal applied to the output connector so as to perform the switch operation.

Abstract: A switching section causes the first amplification section to amplify the expansion left audio signal and supply the amplified expansion left audio signal to the first speaker terminal and causing the second amplification section to amplify the expansion right audio signal and supply the amplified expansion right audio signal to the second speaker terminal when the Bi-Amp function is not used. The switching section causes the first amplification section to amplify the left audio signal for Bi-Amp and supply the amplified left audio signal for Bi-Amp the first speaker terminal and causing the second amplification section to amplify the right audio signal for Bi-Amp and supply the amplified right audio signal for Bi-Amp to the second speaker terminal when the Bi-Amp function is used.

Abstract: Provided is an audio transmission system for use in environments having multiple televisions. An audio transmitter couples to a television via the television's audio output jack and frequency modulates the audio signal for transmission on a user selected channel. An audio receiver receives the frequency modulated audio signal and extracts the audio signal. The audio receiver may be charged in a charging station.

Abstract: In order to facilitate the operation to select a directional microphone and a non-directional microphone, an IC recorder includes a directional microphone having directivity, a non-directional microphone not having directivity, a scene selection portion to select one of the four scenes of oral dictation, conference, lecture, and music, a first EEPROM for storing in advance a correspondence table that assigns either one of the directional microphone and the non-directional microphone to each of the four scenes, and a microphone switching portion to switch, between the directional microphone and the non-directional microphone, to the one assigned to the selected scene by the correspondence table in response to one of the four scenes being selected by the scene selection portion.