A signal converter includes a chamber, a first diaphragm, a second diaphragm, and a first converter. The chamber has a first opening at one end and a second opening at a second end opposite the first end. The first diaphragm is disposed so as to cover the first opening. The second diaphragm is disposed so as to cover the second opening. The first converter is disposed in the chamber and configured to generate a first signal based on a vibration of the first diaphragm.

A smart speaker for providing a sound service based on an artificial intelligence platform, while being communicatively connected to an external server is disclosed. The smart speaker includes a first transceiver for connection to a wireless local area network (WLAN), a second transceiver for connection to a mobile communication network, and a processor configured to control communication connection to the external server through the first transceiver in indoor mode, and control communication with the external server through the second transceiver in outdoor mode.

Embodiments of the invention are directed to a microactuator including using (i) an ingress membrane mounting ring adhesive positioned on an ingress membrane mounting surface to mount an ingress membrane and (ii) a flexible encapsulation shield mounted on a support band and extending over the ingress membrane mounting ring and (iii) a first reed adhesive connecting the ingress membrane to a microactuator reed at an ingress membrane reed opening and (iv) a second reed adhesive positioned on and covering the first reed adhesive, the second reed adhesive extending from the ingress membrane to the microactuator reed.

To provide an audio processing device including a configuration in which a different microphone is used for generation of directivity depending on a frequency band.

Audio signal processing that satisfies both sound quality and cost is enabled.

A processing unit that performs processing based on an output audio signal of a first microphone unit focusing on sound quality and an output audio signal of a second microphone unit focusing on cost is included. For example, the processing performed by the processing unit includes processing of obtaining a beamforming output and processing of obtaining a sound source separation output. Furthermore, for example, the processing performed by the processing unit may include processing of generating a first audio signal on the basis of an output audio signal of the first microphone and processing of generating a second audio signal on the basis of output audio signals of a plurality of the second microphone units.

A video system and method are presented that uses an output-receiving microphone mounted on the housing of the video system to receive a signal representative of the output of a speaker in a use-environment. This signal is compared with a second signal received from a spoken-word microphone that is mounted more remotely from the speaker. In some embodiments, the spoken-word microphone is positioned in a low-pass filter tune pipe and is combined with a separate spoken-word microphone in a tuned microphone array so as to filter out frequencies not associated with the human voice. The two signals are magnitude matched, and the first signal is subtracted from the second to generate an improved voice signal for a voice recognition system.

A video system and method are presented that uses an output-receiving microphone mounted on the housing of the video system to receive a signal representative of the output of a speaker in a use-environment. This signal is compared with a second signal received from a spoken-word microphone that is mounted more remotely from the speaker. In some embodiments, the spoken-word microphone is positioned in a low-pass filter tune pipe and is combined with a separate spoken-word microphone in a tuned microphone array so as to filter out frequencies not associated with the human voice. The two signals are magnitude matched, and the first signal is subtracted from the second to generate an improved voice signal for a voice recognition system.

Audio signals from microphones of a mobile device are received. Each audio signal is generated by a respective microphone of the microphones. First microphones are selected from among the microphones to generate a front audio signal. Second microphones are selected from among the microphones to generate a back audio signal. A first audio signal portion, which is determined based at least in part on the back audio signal, is removed from the front audio signal to generate a modified front audio signal. A second audio signal portion is removed from the modified front audio signal to generate a left-front audio signal. A third audio signal portion is removed from the modified front audio signal to generate aright-front audio signal.

Embodiments of the invention are directed to a microactuator including using (i) an ingress membrane mounting ring adhesive positioned on an ingress membrane mounting surface to mount an ingress membrane and (ii) a flexible encapsulation shield mounted on a support band and extending over the ingress membrane mounting ring and (iii) a first reed adhesive connecting the ingress membrane to a microactuator reed at an ingress membrane reed opening and (iv) a second reed adhesive positioned on and covering the first reed adhesive, the second reed adhesive extending from the ingress membrane to the microactuator reed.

An audio device including a housing having a side facing outwardly of the housing, the housing further having a first mounting position disposed on the side. The side has a first portion and a second portion, the first portion opposite the second portion relative to the first mounting position. The audio device also includes a first omnidirectional microphone disposed on the first portion. The audio device also includes a second microphone disposed on the first mounting position. The second microphone may be a second-order microphone. The second-order microphone has a first-order microphone disposed within a first platform mounted a distance from the first mounting position. The audio device also includes a first speaker disposed on the second portion. The first speaker is further disposed such that an audio output of the first speaker falls within a null of the second microphone.