Abstract: An image sensing device according to the present invention includes: an optical portion that is driven to form an optical image in any state; a sensor portion that acquires, as an image signal, the optical image formed by the optical portion; a sound collection portion that acquires an acoustic signal by collecting sound; an image sensing environment determination portion that determines an image sensing environment which is an environment under which the sensor portion acquires the image signal; and an operation determination portion that determines, based on the image sensing environment determined by the image sensing environment determination portion, at least one of a drive speed of the optical portion and a method of processing the acoustic signal acquired by the sound collection portion when the optical portion is driven.

Abstract: Provided is a sound recording/playback device (1) that records onto a recording medium (5) sound data captured by a microphone (6), pulls the sound data from the recording medium (5), and plays said sound data. The sound recording/playback device is provided with a discrimination means (21, 22, 23, 24) which discriminates between human sound and non-sound audio. Upon recording, the device records the start position and end position of human sound, as determined by the discrimination means (21, 22, 23, 24), and upon playback, the data between the afore-mentioned start position and the subsequent end position is extracted and outputted.

Abstract: Provided is a music track extraction device, including: an audio power calculation section which calculates an audio power from an audio signal; and a judgment section which performs a judgment between a music track portion and a non-music track portion based on a state of the audio power.

Abstract: A sound recording device includes a recording unit which records an input sound signal in a recording medium, a detection unit which detects a specific sound signal corresponding to specific sound output from a predetermined instrument that can be included in the input sound signal, and a control unit which controls an action of the recording unit on the basis of a result of the detection by the detection unit.