Musiktonsignalerzeugungsvorrichtung, Musiktonsignalerzeugungsverfahren und Programm

Details

Veröffentlichungs-Nr.

EP4152311

Aktenzeichen

EP22195619

Anmeldetag

14. September 2022

Veröffentlichung

9. April 2025

Erteilung

9. April 2025

Rechtsraum

EP

IPC

G10H1/12G10H7/00

Abstract

An all-pass filter is used for favorable processing. Provided are: a delay line (301) provided with a plurality of delay units (302) which are connected in a cascade manner and respectively delay input signals (x(n)) by a first delay length; at least three fractional delay blocks (305) each of which is connected to correspond to any delay unit among the plurality of delay units (302) and delays an input signal (x(n)) by a second delay length equal to or less than the first delay length; and at least one processor (101) that sets any one of the plurality of delay units (302) as a first delay unit which generates a delay corresponding to a designated tone pitch, sets a delay unit in a preceding stage of the first delay unit among the plurality of delay units (302) as a zeroth delay unit, and sets a delay unit in a subsequent stage of the first delay unit among the plurality of delay units (302) as a second delay unit. The at least one processor (101) connects the at least three fractional delay blocks (305) to the first delay unit, the zeroth delay unit, and the second delay unit, respectively. The at least one processor (101) continuously connects any one of the connected zeroth delay unit and the connected second delay unit to the fractional delay block (305) and reconnects at least any one of a new zeroth delay unit and a new second delay unit to at least any one of the fractional delay blocks (305) other than the fractional delay block (305) connected to a new first delay unit when setting any one of the connected zeroth delay unit and the connected second delay unit as the new first delay unit in accordance with a change in the designated tone pitch, setting a delay unit in a preceding stage of the new first delay unit as the new zeroth delay unit, and setting a delay unit in a subsequent stage of the new first delay unit as the new second delay unit.

Anmelder

Firma

Casio Computer Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete