Abstract: A noise reduction apparatus includes: an input device to which an electric signal is input from an external device; a signal processing circuit configured to perform predetermined signal processing on the electric signal input to the input device and output a generated signal to an external device; a switch configured to change over to either one of a connected state in which the input device and the signal processing circuit are electrically connected to each other and a disconnected state in which the input device and the signal processing circuit are electrically disconnected to each other; and a noise processing circuit configured to subtract a noise signal output from the signal processing circuit when the switch is in the disconnected state from the signal output from the signal processing circuit when the switch is in the connected state, and output a subtraction result.

Abstract: A noise reduction apparatus includes: an input device to which an electric signal is input from an external device; a signal processing circuit configured to perform predetermined signal processing on the electric signal input to the input device and output a generated signal to an external device; a switch configured to change over to either one of a connected state in which the input device and the signal processing circuit are electrically connected to each other and a disconnected state in which the input device and the signal processing circuit are electrically disconnected to each other; and a noise processing circuit configured to subtract a noise signal output from the signal processing circuit when the switch is in the disconnected state from the signal output from the signal processing circuit when the switch is in the connected state, and output a subtraction result.

Abstract: A noise reduction apparatus includes: a first converting circuit configured to generate first data by subjecting externally input first audio data to Fourier transform to convert into amplitude data per frequency; a noise-data recording circuit configured to record noise data that has been detected in advance; a subtracting circuit configured to generate second data by subtracting the noise data from the first data; an arithmetic circuit configured to generate third data by synthesizing the first data and the second data; and a second converting circuit configured to generate second audio data by subjecting the third data to inverse Fourier transform.

Abstract: A camera system includes a plurality of first cameras and a second camera. Each of the plurality of first cameras has a first receiving section that receives a control signal, a first image pickup section that photographs a first image based on the control signal, and a first transmitting section that transmits the first image and terminal information based on the control signal. The second camera has a second image pickup section that photographs a second image, a second transmitting section that transmits the control signal, a second receiving section that receives the first image and the terminal information, a camera selecting section that selects the first camera that satisfies a predetermined condition as control target camera based on the terminal information, and a storing section that stores the second image.

Abstract: A camera system includes a plurality of first cameras and a second camera. Each of the plurality of first cameras has a first receiving section that receives a control signal, a first image pickup section that photographs a first image based on the control signal, and a first transmitting section that transmits the first image and terminal information based on the control signal. The second camera has a second image pickup section that photographs a second image, a second transmitting section that transmits the control signal, a second receiving section that receives the first image and the terminal information, a camera selecting section that selects the first camera that satisfies a predetermined condition as control target camera based on the terminal information, and a storing section that stores the second image.

Abstract: A camera system includes a plurality of first cameras and a second camera. Each of the plurality of first cameras has a first receiving section that receives a control signal, a first image pickup section that photographs a first image based on the control signal, and a first transmitting section that transmits the first image and terminal information based on the control signal. The second camera has a second image pickup section that photographs a second image, a second transmitting section that transmits the control signal, a second receiving section that receives the first image and the terminal information, a camera selecting section that selects the first camera that satisfies a predetermined condition as control target camera based on the terminal information, and a storing section that stores the second image.

Abstract: A camera system includes a plurality of first cameras and a second camera. Each of the plurality of first cameras has a first receiving section that receives a control signal, a first image pickup section that photographs a first image based on the control signal, and a first transmitting section that transmits the first image and terminal information based on the control signal. The second camera has a second image pickup section that photographs a second image, a second transmitting section that transmits the control signal, a second receiving section that receives the first image and the terminal information, a camera selecting section that selects the first camera that satisfies a predetermined condition as control target camera based on the terminal information, and a storing section that stores the second image.