Control method, control system, and storage medium

A control system for controlling a frequency response of a filter for processing an audio signal, the control system comprising:

• one or more processors;
• and
• one or more memories,
• wherein the frequency response is defined by an amplitude characteristic and a phase characteristic, and
• wherein the one or more processors are configured to execute a program stored in the one or more memories to cause the control system to:
• acquire a target amplitude characteristic, a target phase characteristic, and a latency value;
• obtain a first frequency response in accordance with the target amplitude characteristic and the target phase characteristic;
• obtain a second frequency response by modifying the first frequency response so that a latency of the second frequency response satisfies the latency value;
• and
• obtain a third frequency response to be set for the filter by correcting the second frequency response, the second frequency response being corrected by reducing a difference between (i) an amplitude characteristic of the second frequency response and (ii) the target amplitude characteristic.

A non-transitory storage medium, comprising one or more storage media having stored thereon a computer-readable program for controlling a frequency response of a filter for processing an audio signal,

• wherein the frequency response is defined by an amplitude characteristic and a phase characteristic, and
• wherein the computer-readable program causes one or more processors to perform operations of:
• acquiring a target amplitude characteristic, a target phase characteristic, and a latency value;
• obtaining a first frequency response in accordance with the target amplitude characteristic and the target phase characteristic;
• obtaining a second frequency response by modifying the first frequency response so that a latency of the second frequency response satisfies the latency value;
• and
• obtaining a third frequency response to be set for the filter by correcting the second frequency response, the second frequency response being corrected by reducing a difference between (i) an amplitude characteristic of the second frequency response and (ii) the target amplitude characteristic.