Abstract: A gripping mechanism (3) includes a gripping roller (32) and a holder (31) that houses the gripping roller (32). A gripped portion (42) of a first component (4) is gripped between an outer surface of the gripping roller (32) and an inner surface of the holder (31) through action of gravity acting on the gripping roller (32). Preferably, the gripping roller (32) includes a core (321) that is cylindrical or columnar in shape and a covering section (322) that is an elastic body covering a circumferential surface of the core (321). Preferably, the covering section (322) has a circumferential surface with a friction coefficient greater than a friction coefficient of the circumferential surface of the core (321).

Abstract: A method of outputting a parameter of a sound processing device receives an audio signal, obtains information of the parameter of the sound processing device, which corresponds to the received audio signal, by using a trained model obtained by performing training of a relationship among a training output sound of the sound processing device, a training input sound of the sound processing device, and a parameter of sound processing performed by the sound processing device, the parameter of the sound processing device being receivable by a user of the sound processing device, and outputs obtained information of the parameter of the sound processing device corresponding to the received audio signal.