Abstract: Provided are identifier (ID)-based encryption and decryption methods and apparatuses for the methods. The ID-based encryption method includes having, at a transmitting terminal, a transmitting-side private key corresponding to a transmitting-side ID issued by a key issuing server, generating, at the transmitting terminal, a session key using the transmitting-side ID, a receiving-side ID, and the transmitting-side private key, extracting, at the transmitting terminal, a secret key from at least a part of the session key, and encrypting, at the transmitting terminal, a message using a previously set encryption algorithm and the secret key.

Abstract: A multiplication method and a modular multiplier are provided. The multiplication method includes transforming a redundant-form multiplier by adding a recoding constant to the multiplier, performing recoding by using the transformed multiplier, and performing partial multiplication between the multiplier and a multiplicand using result values of the recoding.

Abstract: Method to secure the communication of components within self-service automats that are linked to each other by a bus system, having a transmitter and a receiver, characterized in that data are exchanged as tupels (C,A,R,N,Z) on the transport layer of the bus system where C are the message data M encrypted with an encryption key, A are the message data M authenticated with an authentication key, R represents the role of a component on the bus system of active or passive participants, N represents a message counter, Z represents a session counter.

Abstract: Entropy obtained from a series of key generation exchanges may be combined with entropy from a strong entropy source to allow the strong entropy to be stretched to generate a larger number of keys for use on a communication network, without requiring additional information from the group members and without requiring the entropy source to be increased in size or in number. In one embodiment, nonces exchanged during an initial key exchange are used to generate additional key material that is then fed, together with a fresh random secret, to another pseudo-random function to generate an additional key stream. The methods are particularly useful for group key management where a large number of keys are required to be generated in a short time frame.

Abstract: An improved method for data encryption has been developed. The method includes storing data, multiple prime numbers and random numbers within an electronic memory storage device. Next, calculating a public number using the multiple prime numbers and providing a public number to a recipient apparatus that has knowledge of the multiple prime numbers. The method then encrypts the stored data with a randomly generated key and deletes the randomly generated key after use. Next, the method calculates a common shared secret between the sender and recipient using the prime numbers, a recipient public number and the second random number. The sender and recipient calculate parameters using a key equation based on the randomly generated key and random numbers and a common shared secret. Finally, the recipient calculates the randomly generated key for decryption using the common shared secret, one of the prime numbers, the parameters and the simultaneous equations for decryption of the data.

Abstract: Provided is an information processing apparatus including a random number generation unit configured to generate a pair of random numbers from a seed, a message generation unit configured to generate a message based on a pair of multi-order multivariate polynomials F=(f1, . . . , fm) defined in a ring K, the pair of random numbers, and a vector s that is an element of a set Kn, a message supply unit configured to supply the message to a verifier storing the pair of multi-order multivariate polynomials F and vectors y=(y1, . . . , ym)=(f1(s), . . . , fm(s)), and a response supply unit configured to supply the verifier with response information corresponding to a verification pattern selected by the verifier from among k (where k?3) verification patterns.

Abstract: A method of facilitating transport of partially encrypted video is disclosed. The method re-packetizes or otherwise de-concatenates packets carrying the partially encrypted video into packets where all the video in each packet is either encrypted or unencrypted. The re-packetized video packets may include data that identifies whether the packet is carrying encrypted or unencrypted video.

Abstract: A method is disclosed for intermixing a first stream of data and a second stream of data. An associated first secret key is expanded to form a first associated expanded secret key. An associated second secret key is expanded to form a second associated expanded secret key. The first stream of data and the second stream of data are intermixed to form a combined stream of data, which is ciphered. The combined stream of data is de-multiplexed after ciphering thereof and provided at an output port.

Abstract: A method in a receiver includes receiving from a transmitter a sequence of communication packets, which carry data encrypted with an encryption scheme. The encryption scheme depends on a counter value that is incremented independently by each of the transmitter and the receiver. Attempts are made to decrypt the data of a received packet multiple times using different, respective counter values, to produce multiple respective decrypted outputs. A decrypted output in which the data has been decrypted correctly is identified, the counter value is corrected, and the data of the received packet is recovered from the identified decrypted output.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for secure transmission of packets with short headers. The methods may include temporarily suspending the use of packets that use a short MAC header (that lack a Key ID) during re-keying procedures and resuming the use of such packets after a new default Key ID is established via the re-keying procedures.

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: An encoder is disclosed for use in a surround sound system wherein at least four audio input signals (FL, FR, RL, RR) representing an original sound field are encoded into two channel signals (L, and the encoded two channel signals are decoded into at least four audio output signals (FL?, FR?, RL?, RR?) corresponding to the four audio input signals. The encoder includes matrix means connected to receive the four audio input signals for encoding the four input signals into two channel (L and R) output signals. The matrix means includes means responsive to the four input signals for producing Lenc and Renc output signals as follows: Lenc=FL+kFR+jRL+jkRR Renc=FR+kFL?jRR?jkRL wherein k denotes a transformation or matrix coefficient having a value that is steered dynamically based on level of rear signal (RL+RR) content relative to front signal (FL+FR) content. An encoding method for use in a surround sound system is also disclosed.

Abstract: Disclosed herein, among other things, are systems and methods for eavesdropping on a data stream for hearing assistance devices. One aspect of the present subject matter includes a hearing assistance system for a wearer including a Bluetooth host device having a transmitter configured to send data including one or more encoded audio streams, and a data channel having an advertisement that includes frequency information, frequency hop sequences, information for decoding audio streams, and security keys for decoding audio stream information. The system also includes one or more Bluetooth slave devices identified by the Bluetooth host device. The Bluetooth slave devices are configured to actively participate in a connection with the host device to aid the host transmitter in deciding which frequencies to use for frequency hopping and in determining which frequencies are being interfered with and should not be included in a channel map, according to various embodiments.

Abstract: A multi-channel switchmode audio amplifier is configured by a programmed processor such that each channel drives separate loads, is connected in parallel or is configured in a bridge-tied mode as well as combinations thereof. In one embodiment, amplifier channels that are connected in parallel have power amplifiers that are driven with signals from a single modulator. A feedback circuit and error amplifier from one channel controls the modulated signal that is applied to each parallely connected amplifier channel. Current feedback circuits for parallely connected amplifier channels are eliminated by tightly controlling the timing of switching in the power amplifier output stages.

Abstract: A system and method for mapping acoustic activities is disclosed. One method comprises receiving acoustic measurements recorded for a predetermined interval at a plurality of telephonic computing devices that are located at a determined location. A map of the acoustic measurements is created based on a location of each of the plurality of telephonic computing devices at which the acoustic amplitude measurement is recorded. An amplitude and/or frequency of the acoustic measurements can be displayed on the map relative to the location of the telephonic computing device at the selected location to form an acoustic map.

Abstract: A method for self-calibration of the position of a set of sensors of acoustic signals includes: providing a set of sources of acoustic events designed to generate acoustic waves; measuring times of flight of the acoustic events between each source of acoustic events and each microphone; and reconstructing the positions of the set of sensors and the positions of the sources of acoustic events through a maximum-likelihood estimation procedure executed on the basis of the measured times of flight. Times of emission of the acoustic events are acquired. Times of flight are obtained. Distances between the sources and the sensors are calculated. A matrix of estimated positions of the sensor microphones and a matrix of estimated positions of the sources of events are calculated.

Abstract: A system and method are provided for automatic fitting of all audio signals according to the ear in which a user is using to receive audio signals from a host device. The device may comprise an inquirer configured to query a host device for an in-use audio producing transducer; an electronic mechanism configured to identify an ear which a user is using to receive audio signals from a host device, based on the in-use audio producing transducer; and a notifier configured to instruct the host device, based on the identified ear, to output a channel of audio signals to the in-use audio producing transducer. The ear in use may be deduced from inertial data. The instructions may specify a particular channel of audio signals, or enhancement thereof, based on characteristics of the identified ear and/or a detected or typical signal pathway used to transmit a signal to the identified ear.

Abstract: A reverberation suppression device comprises: an echo canceller that removes an echo component included in an input signal; a howling suppressor that detects occurrence of howling based on a frequency characteristic of the input signal from which the echo component has been removed and attenuates a frequency level of a component of the detected howling; and an initial sound suppressor that detects a sound section of the input signal in which the frequency level of the howling component has been attenuated and suppresses a signal value at a sound start portion of the detected sound section.

Abstract: A noise cancelling headphone includes a headphone body, a audio player and a central processing unit. The headphone body includes a headband, a first speaker unit and a second speaker unit. The elongated headband is bent and shaped to fittedly and adjustably wear on a user's head, wherein the headband has a first and a second end portion. The first speaker unit and the second speaker unit are attached on the first and the second end portion of the headband respectively. The audio player is provided on the headphone body, and is arranged to read a predetermined kind of audio signals. The central processing unit is received in the headphone body, and is arranged to process the audio signals outputted from the audio player and drive the first speaker unit and the second speaker unit to generate corresponding audible sound.

Abstract: A retractable ear bud module has a housing with an ear bud cable retractable mounted in the housing. The ear bud cable has at least one ear bud and a microphone, and a fixed end attached to a circuit board including a wireless receiver mounted. The wireless receiver electronically connects with the ear bud cable to transfer audio signals from the electronic device to the ear bud and from the microphone to the wireless receiver. A spool, mounts in the housing to retract and dispense the ear bud cable. In order to avoid entanglement of the microphone in the spool and housing, the microphone is integrated with the ear bud in one embodiment, is collocated with the ear bud in an alternate embodiment, and is distanced by no more than two inches from the ear bud in another embodiment.

Abstract: A wireless audio control apparatus comprises a U-shaped outer shell having an outer surface, an inner surface and a plurality of side surfaces. A spring clip is attached to the inner surface of the outer shell. A speaker, a microphone and at least one control interface are located on the outer surface of the outer shell. A jack sealed behind a jack cover is located on at least one of the plurality of side surfaces of the outer shell. A wireless transceiver, an amplifier and a rechargeable battery are located inside the outer shell. The wireless audio control apparatus is configured to control the audio output from a wirelessly attached personal audio device while being removably affixed to a generally planar object worn by a user.

Abstract: A sound collection method and an electronic device are disclosed. The method is applicable to an electronic device that includes an image acquisition unit and an audio collection unit. The method includes determining a focus object when the image acquisition unit is acquiring images; obtaining a position relationship information between the focus object and the image acquisition unit based on the focus object; obtaining a first direction information based on the position relationship information; and controlling the audio collection unit to collect the sound from a sound source corresponding to the first direction based on the first direction information.

Abstract: A microphone array is described for use in ultra-high acoustical noise environments. The microphone array includes two directional close-talk microphones. The two microphones are separated by a short distance so that one microphone picks up more speech than the other. The microphone array can be used along with an adaptive noise removal program to remove a significant portion of noise from a speech signal of interest.

Abstract: Embodiments include a method and an apparatus for the localization of at least one source of an acoustic signal including: temporally sampling the acoustic signal with a plurality of microphones to obtain a (D+1)-dimensional space-time matrix representation of the acoustic signal, wherein D is the number of spatial dimensions, applying a (D+1)-dimensional Fourier transform to the matrix representation, determining a first peak in a spectrum obtained based on the application of the Fourier transform, and calculating the direction of arrival of the acoustic signal at at least one of the plurality of microphones based on the determined first peak.

Abstract: A method and apparatus for generating a noise reduced output signal from sound received by a first and second microphone arranged as a microphone array. The method includes transforming sound received by the first microphone into a first input signal and sound received by a second microphone into a second input signal and calculating, for each of the frequency components, a weighted sum of at least two intermediate signals calculated from the input signals by means of complex valued transfer functions and real valued Equalizer functions. The method includes a weighing function with range between zero and one, with quotients of signal energies of the intermediate functions as arguments of the weighing function, and generating the noise reduced output signal based on the weighted sum of the intermediate functions and based on the weighted sum of the first and second intermediate function at each of the frequency components.

Abstract: A system for interacting with an audio reproduction device and a user using the audio reproduction device is disclosed. The system includes: an image capture module capturing an image depicting an audio reproduction device used by a user; an image recognition module performing image recognition to extract recognition data from the image, the recognition data including data describing the audio reproduction device and one or more deteriorating factors that deteriorate a sound quality in the audio reproduction device; a filter module estimating a sound degradation in the audio reproduction device that is caused by the one or more deteriorating factors, the filter module applying a digital filter to compensate the sound degradation in the audio reproduction device; an aggregation module aggregating data associated with the user, the aggregated data including the recognition data; and a recommendation module providing one or more recommended items to the user.

Abstract: One embodiment of the present invention sets forth a system that includes a detection device and a processor. The detection device is configured to sense that a handheld device has not been placed on or near a surface. In response to sensing that the handheld device has not been placed on or near a surface, the detection device is configured to transmit an indicator to the processor. The processor is configured to receive a first audio signal, and determine that the handheld device has not been placed on or near a surface by receiving the indicator from the detection device. In response to determining that the handheld device has not been placed on or near a surface, the processor is further configured to apply a compensating function to the first audio signal to generate a second audio signal, and transmit the second audio signal to a speaker.

Abstract: This document discusses, among other things, a switch multiplexer having a common connector, the switch multiplexer including a first switch configured to receive a first signal at or above a ground (GND) reference and a second switch configured to receive a second signal that swings positive and negative about ground. The switch multiplexer includes a negative charge pump configured to bias the first switch with a negative charge pump voltage lower than the most negative voltage swing of the second signal when the second switch is enabled, and to bias the first switch with GND when the first switch is enabled.

Abstract: When a knob is at a center position, transmission levels of first volumes on a path from a second effector to a first effector, and second volumes on a path from the first effector to the second effector are both zero, and the first effector and the second effector operate independently. When the knob is displaced to right side from the center position, the transmission level of the second volumes is controlled according to the displacement amount, but the transmission level of the first volumes stays at zero. Thus, the second effector is connected in series to the first effector. When the knob is displaced to left side from the center position, the transmission level of the first volumes is controlled according to the displacement amount, but the transmission level of the second volumes stays at zero. Thus, the first effector is connected in series to the second effector.

Abstract: A multi-channel stereo speaker system includes acoustically separated but mechanically connected chambers containing active drivers to reproduce sound for each channel, and a passive radiator for each chamber to help tune the frequency response of the chamber. Passive radiators are positioned and oriented so that their movements tend to cancel each other out.

Abstract: A localization control method of a sound for a portable device and a portable device thereof is provided. The localization control method of a sound for a portable device includes collecting location information of the portable device and location information of a counterpart portable device when an event for communicating with the counterpart portable device by the portable device is generated, determining localization of the sound based on the location information, and outputting the sound according to the determined localization.

Abstract: Disclosed herein, among other things, are systems and methods for obtaining an audio stream for hearing assistance devices. One aspect of the present subject matter includes a method comprising sensing proximity of a wearer of a hearing assistance device, and sensing direction of movement of the wearer of the hearing assistance device. Audio streaming to the hearing assistance device is activated or deactivated based on the sensed proximity and direction of movement, according to various embodiments.

Abstract: The invention relates to system and method for configuring a hearing device (100) with an external configuration unit (101), the method comprising the steps of: a) processing at least two sound recordings in the external processing unit (104?) with different parameter settings (105?a, 105?b), b) combining them into one joint signal, c) feeding the joint signal to the hearing device's output transducer (107), bypassing the rest of the hearing device (100), d) emitting the joint signal, e) letting the user (111) choose one of the sound recordings that fits his/her requirements best, f) repeating steps a) to e) with varying parameter settings, g) transmitting a chosen parameter setting to the hearing device (100), wherein in step a) the sound recordings to be processed are chosen according to the situation the hearing device (100) will be used for or the specific hearing impairment of a user (111) of the hearing device (100).

Abstract: A novel dual-microphone speech enhancement technique is proposed that utilizes the coherence function between input signals as a criterion for noise reduction. The technique is based on certain assumptions regarding the spatial properties of the target and noise signals and can be applied to arrays with closely spaced microphones, where noise captured by sensors is highly correlated (e.g., inside a mildly reverberant environment). The proposed algorithm is simple to implement and requires no estimation of noise statistics. In addition, it offers the advantage of coping with situations in which multiple interfering sources located at different azimuths might be present.

Abstract: In a hearing aid having a microphone to be arranged at a body of a user for capturing ambient sound, a loudspeaker for outputting the ambient sound after having been amplified on a frequency-dependent basis, and a signal processor, the signal processor is configured to amplify the sound such that the amplified sound is audible to the user, and to automatically re-adjust the gain by the following steps: selecting a tone having a specific frequency; outputting the tone and the amplified ambient sound via the loudspeaker as an output sound; capturing via said microphone an analysis sound composed of ambient sound and of a reflection of said output sound; extracting a reflection of the tone from the captured analysis sound; and determining a reflection component for the specific frequency of the tone; adjusting the gain in frequency-specific manner and based on the determined reflection component.

Abstract: A bone conduction device including an external component, the external component comprising a sound processor and transducer, the transducer configured to generate mechanical forces, and the external component configured for positioning behind a recipient's ear such that the mechanical forces are transmitted from the external component to a recipient's bone to generate a hearing percept via bone conduction.

Abstract: A hearing aid component with earwax filter is provided, wherein the hearing aid component has a sound inlet opening that has at least two sound inlet portions having different diameters and being displaced with respect to each other in a longitudinal direction of the sound inlet opening so that the sound inlet opening narrows towards the interior of the hearing aid component so that more proximal sound inlet portion has a relatively larger diameter and more distal sound inlet portion has a relatively smaller diameter. The earwax filter is placed in said sound inlet opening and comprises: a cap with an outward-facing and an inward-facing side, and a peripheral edge, said peripheral edge being force-fitted into the sound inlet portion with the relatively larger diameter. The cap has a plurality of sound inlets arranged along the periphery of the cap wherein the sound inlets are arranged along a perimeter of the cap.

Abstract: According to the invention, a receiver-in-the-ear (RITE) hearing aid with an in-the-ear component is proposed, wherein the in-the-ear component has a customized shell fitted to an individual user's ear canal geometry and a receiver placed in the shell, and wherein the receiver is connected to a further hearing aid component by means of a lead connection. The in-the-ear component comprises a face plate connected to the shell. The face plate is arranged on a side of the hearing aid component that faces away from a tympanic membrane when in use. The face plate comprises a cable feedthrough that is attached to the face plate and that is covered by a cover plate.

Abstract: A miniature speaker is describer including a microphone holder and a vibrator holder. A miniature speaker matching the oval shape of a sound chamber is placed face down over the sound chamber. A small slot is formed in one of the sides of the sound chamber to provide a sound portal through which the speaker generated sound is heard. The platform on which the sound chamber is formed also comprises a microphone holder and a vibrator holder. The microphone holder is positioned such that a sound receiving portal of the microphone is orthogonal to the sound portal formed in one of the side walls of the sound chamber.

Abstract: A mounting bracket system for mounting a loudspeaker monitor onto a microphone stand pole without requiring disassembly of either the loudspeaker monitor or the microphone stand. First and second mounting brackets may be mounted to a loudspeaker monitor or other product to be mounted. An indent on each mounting bracket is configured to engage a microphone stand or another elongated, pole-like structure, supporting the weight of the loudspeaker monitor through frictional forces.

Abstract: Integrated audio-visual systems are provided. Such integrated audio-visual systems are capable of reproducing sound frequencies without compromising visual characteristics. In particular, a surface of the acoustic diaphragm also serves as the image projection screen. Such surface may be made of materials capable of reflecting light and converting audio signals simultaneously. The surface may be integrated with electromagnetic conductive materials or nanomaterials. In response to an audio signal, the surface is driven by various driving mechanism to create acoustic vibration. Any number of audio zones may be created on the surface and the audio emanation areas may be customized for the desired application.

Abstract: A portable audio device has a gate member that is spring activated to allow for attachment to other articles. The spring-activated gate member is integrated within the portable audio device. The portable audio device includes a receiver and transmitter for communication of wireless data. When the receiver receives audio signals, they may be outputted to a speaker that is part of the portable audio device. The portable audio device includes a waterproof portion.

Abstract: An electronic device is provided. The electronic device includes a case frame having an opening, a first unit, and at least one external environment sensor. The opening has a predetermined size and is formed in the case frame. The first unit is disposed inside the electronic device and is configured to perform a first function via the opening. The at least one external environment sensor is disposed inside the electronic device and detects an external environment condition via the opening. The electronic device uses an already formed opening for data input/output as an external connection path for the external environment sensor to avoid creating a separate opening for the external environment sensor.

Abstract: An apparatus comprising: a first substantially horn shaped structure configured to couple and amplify sound from a first speaker of a further apparatus; and a second substantially horn shaped structure configured to couple and amplify sound from a second speaker of the further apparatus, wherein the first and second substantially horn shaped structure each comprise a mouth portion with a physical separation dimension greater than a physical separation dimension of the first and second speaker acoustic outlet of the further apparatus.

Abstract: A headphone assembly is provided that includes two earpieces coupled by a flexible connecting wire. Each earpiece includes a single large button disposed on a distal side of the earpiece, thereby enabling a wearer to operate the system, even without direct access thereto.

Abstract: A headset for use with electronic communications devices such as a cellular telephone and which includes a unitary, one-piece headband that includes a hair comb. The one-piece headband also includes a volume control and an on/off switch and an aerial wire intertwined with the teeth of the comb. Earbuds are also attached to the one-piece headband to be integral and unitary therewith.

Abstract: An object of this invention is to provide a canal-type receiver capable of reproducing sound fields spanning front-to-rear and/or top-to-bottom. Thus, an ear piece of the canal-type receiver has a substantially cylindrical shape and includes a cylindrical portion including a sound guiding tube emitting a sound wave, radiated from a sound-emission unit in a receiver, to the inside of the external auditory canal, the sound guiding tube is configured so that a directional sound wave radiation axis of the sound wave faces a predetermined position of a wall of the external auditory canal in such a state that a cylindrical portion of the ear piece is mounted at a predetermined position in the external auditory canal, whereby the sound wave radiated from the sound guiding tube is reflected by a portion of the external auditory canal wall to arrive at the eardrum.

Abstract: A terminal includes a first upper carrier including a speaker grill housed as a separate piece in a penetrating hole formed at one surface, and a second upper carrier having an antenna pattern in at least one surface and being coupled to one end of the first upper carrier. A method of manufacturing a terminal having a speaker device, comprises forming a penetrating hole to house the speaker device at one surface of a first upper carrier, coupling a speaker grill to the penetrating hole, forming an antenna pattern at one surface of a second upper carrier separated from the first upper carrier and coupling the first upper carrier and the second upper carrier.

Abstract: A speaker and audio jack module for a portable electronic device. The module includes an audio jack housing having a tube dimensioned to receive an audio plug. An acoustic port is formed through a side of the tube so as to acoustically connect a speaker housing having a speaker contained therein to the audio jack housing. The audio jack housing is capable of receiving an audio input when the audio plug is inserted therein and outputting an audio output from the speaker when the audio plug is removed.

Abstract: An electronic device includes an internal speaker module and an external sound box detachably applied to the internal speaker module. The valve is resisted to the opening to cover the opening of the internal speaker module. When external sound box is applied to the internal speaker module, the connector is magnetically attracted with the magnetic attracter, while the valve is magnetically repelled from the connector and moves away from the opening to open the opening, thereby the external sound chamber is communicating with the internal sound chamber.