Sound recording device, imaging device, photographing device, optical device, and program

A program for causing a computer to execute:

• an input step of inputting a sound signal and a timing indicating that an operation unit included in a device having recorded the sound signal operates;
• a section setting step of setting a first section including a section in which the operation unit operates, in the sound signal based on the input timing;
• a reference signal determining step of determining, as a first reference signal, the sound signal corresponding to a second section following the first section in the sound signal;
• a signal detecting step of detecting, as a second reference signal, a sound signal with the highest correlation with the first reference signal in the sound signal;
• an interpolation signal detecting step of detecting, as an interpolation signal, a sound signal that follows the second reference signal detected in the signal detecting step in the sound signal and has the same time length as the first section;
• and
• a signal replacing step of replacing the sound signal in the first section with the interpolation signal.

A photographing device comprising:

• a photographing unit that photographs an image by an optical system;
• a microphone that converts a sound wave into an electrical signal;
• a signal detection unit that detects at least one of a sensor signal detected by a sensor for detecting a photographing state and a control signal for controlling photographing;
• a determining unit that determines whether there is a change in a photographing operation using at least one of the sensor signal and the control signal;
• and
• a noise processing unit that makes a process of reducing noise in the electrical signal different when the determining unit determines that there is a change in a photographing operation and when the determining unit does not determine that there is a change in a photographing operation.

An optical device comprising:

• an optical system that forms an image by the optical system;
• a microphone that converts a sound wave into an electrical signal;
• a signal detection unit that detects at least one of a sensor signal detected by a sensor for detecting a photographing state, and a control signal for controlling photographing;
• a determining unit that determines whether there is a change in a photographing operation using at least one of the sensor signal and the control signal;
• and
• a noise processing unit that makes a process of reducing noise in the electrical signal different when the determining unit determines that there is a change in the photographing operation and when the determining unit does not determine that there is a change in the photographing operation.

A program for causing a computer to execute:

• an input step of receiving a sound signal acquired upon photographing and at least one of a sensor signal detected by a sensor for detecting a photographing state, and a control signal for controlling photographing;
• a determining step of determining whether there is a change in a photographing operation using at least one of the sensor signal and the control signal;
• and
• a noise processing step of making a process of reducing noise in the sound signal different when it is determined that there is a change in the photographing operation and when it is not determined that there is a change in the photographing operation.