Funai Electric Company Ltd.

Funai Electric Advanced Applied Technology Research Institute Inc.

Hideki Choji

Fuminori Tanaka

Ryusuke Horibe

Takeshi Inoda

Masatoshi Ono

Toshimi Fukuoka

Rikuo Takano

Kiyoshi Sugiyama

Shigeo Maeda

An integrated circuit device includes a circuit board ('), the circuit board including a first diaphragm (-) that forms a first microphone, a second diaphragm (-) that forms a second microphone, and a differential signal generation circuit () that receives a first voltage signal obtained by the first microphone and a second voltage signal obtained by the second microphone, and generates a differential signal that indicates a difference between the first voltage signal and the second voltage signal.

Integrated circuit device, voice input device and information processing system

A voice input device includes a first microphone (-) that includes a first diaphragm, a second microphone (-) that includes a second diaphragm, and a differential signal generation section () that generates a differential signal that indicates a difference between a first voltage signal and a second voltage signal, the first diaphragm and the second diaphragm being disposed so that a noise intensity ratio is smaller than an input voice intensity ratio (input voice component intensity ratio), and the differential signal generation section () including a gain section () that amplifies the first voltage signal by a predetermined gain, and a differential signal output section () that generates and outputs a differential signal that indicates a difference between the first voltage signal amplified by the gain section and the second voltage signal.

Voice input device, method of producing the same, and information processing system

A voice input device includes a first microphone (-) that includes a first diaphragm, a second microphone (-) that includes a second diaphragm, and a differential signal generation section () that generates a differential signal that indicates a difference between a first voltage signal and a second voltage signal, the first diaphragm and the second diaphragm being disposed so that a noise intensity ratio is smaller than an input voice intensity ratio (input voice component intensity ratio), and the differential signal generation section () including a delay section (), and a differential signal output section () that generates and outputs a differential signal based on a signal delayed by the delay section.

A microphone unit includes: a housing which has an inner space; a partition member which is provided in the housing and divides the inner space into a first space and a second space, the partition member being at least partially formed of a diaphragm; and an electrical signal output circuit which outputs an electrical signal based on vibrations of the diaphragm. In the housing, a first through-hole through which the first space communicates with an outer space of the housing and a second through-hole through which the second space communicates with the outer space are formed.

Microphone unit , voice input device, and method of manufacturing microphone unit

Microphone unit, close-talking voice input device, information processing system, and method of manufacturing microphone unit

A voice input-output device includes a voice input section and a voice output section. The voice input section includes a microphone unit, the microphone unit including a housing that has an inner space, a partition member that is provided in the housing and divides the inner space into a first space and a second space, the partition member being at least partially formed of a diaphragm, and an electrical signal output circuit that outputs an electrical signal that is the first voice signal based on vibrations of the diaphragm, a first through-hole through which the first space communicates with an outer space of the housing and a second through-hole through which the second space communicates with the outer space being formed in the housing. The voice output section includes: an ambient noise detection section that detects ambient noise during a call based on the first voice signal; and a volume control section that controls volume of the speaker based on a degree of the detected ambient noise.

Growing community of inventors

Daito, Japan

Hideki Choji