Abstract: Systems and methods for generating anonymized acoustic fingerprints. For a predetermined time interval, raw audio data associated with an environment can be captured and processed. Based on the captured raw audio data, a plurality of discrete data elements can be generated.

Abstract: Systems and methods for use in a media playback system comprising one or more playback devices are disclosed, where a playback device has a corresponding first set of device attributes used by a first controller application. The methods include: (i) identifying a second set of device attributes used by a second controller application to control the playback device, (ii) selecting a second device attribute for the playback device from the second set of device attributes based at least in part on a first device attribute; (iii) storing the selected second device attribute in the first set of device attributes; and (iv) controlling at least one function of the playback device using the selected second device attribute.

Abstract: In one embodiment, a method includes, by a first electronic device: receiving, from an input sensor of the first electronic device, a predetermined input, where the predetermined input corresponds to a request to wirelessly connect the first electronic device to one or more second electronic devices within a communication range of a transceiver of the first electronic device, wirelessly connecting, using the transceiver of the first electronic device responsive to receiving the predetermined input, to the one or more second electronic devices using a communications profile associated with each of the one or more second electronic devices, where the communications profile includes one or more parameters for verifying to connect the first electronic device and the one or more second electronic devices, and redirecting a live audio communication between the first electronic device and a control device to the one or more second electronic devices.

Abstract: A device comprising: at least two interfaces for interconnecting between at least one audio source and at least one audio sink device; and unidirectional circuitry configured to allow transmission of an audio signal only from said at least one audio source to said at least one audio sink device.

Abstract: The present disclosure provides an audio data processing circuit and an audio data processing method. The audio data processing circuit includes a word select interface, a clock signal interface and an audio data interface. The word select interface is configured to receive a word select signal. The clock signal interface is configured to receive a clock signal, and generating an audio data interface signal according to a number of clocks of the clock signal in one period of the word select signal. The audio data interface is configured to transmit the audio data to a processing unit through a first transmission protocol or a second transmission protocol.

Abstract: A method for playing audio data, includes: detecting a number and position relationships of associated audio playback devices; performing audio signal processing on audio data to be played based on the number and the position relationships to obtain an audio signal matching the number of the audio playback devices; and playing the audio signal through the audio playback devices.

Abstract: A transform-based codec and method with energy smoothing for mitigating vector quantization errors (such as “birdies”) during the encoding process. Embodiments of the codec and method use an encoder to apply in combination an orthogonal transformation and a vector permutation to frequency transform coefficients. In some embodiments the transformation is performed first followed by the permutation and in other embodiments the order is reversed. The order used is reversed at the decoder. A smoothing parameter containing the level of energy smoothing to be applied is passed from the encoder to the decoder and used by both to compute a transform matrix and an inverse transform matrix. In some embodiments the transform matrix is a fraction Hadamard matrix that is invertible, energy preserving, controllable, and stable.