Method, system, and storage medium for controlling loudspeaker group delay

A system for controlling loudspeaker group delay, the system comprising:

• one or more processors;
• and
• one or more memory units,
• the one or more processors being configured to execute a program stored in the one or more memory units, thereby
• acquiring a latency value that defines delay of sound through a filter,
• acquiring a first group delay representing delay for each frequency of sound of a first loudspeaker,
• acquiring a second group delay representing delay for each frequency of sound of a second loudspeaker,
• calculating an adjustment amount for adjusting at least one of a first audio signal supplied to the first loudspeaker, or a second audio signal supplied to the second loudspeaker, or both, such that a difference between the sound of the first loudspeaker and the sound of the second loudspeaker in a target band, which is the band to be adjusted, is reduced, and
• generating, in accordance with the adjustment amount, at least one or both frequency responses of at least one or both filters, which are at least one of a frequency response of a first filter that controls characteristics of the first audio signal supplied to the first loudspeaker, or a frequency response of a second filter that controls characteristics of the second audio signal supplied to the second loudspeaker, or both, while controlling a latency of the at least one or both filters in accordance with the latency value.

One or more non-transitory storage media for a storage of a computer-readable program for causing one or more processors to perform a process comprising:

• acquiring a latency value that defines delay of sound through a filter;
• acquiring a first group delay representing delay for each frequency of sound of a first loudspeaker;
• acquiring a second group delay representing delay for each frequency of sound of a second loudspeaker;
• calculating an adjustment amount for adjusting at least one of a first audio signal supplied to the first loudspeaker, or a second audio signal supplied to the second loudspeaker, or both, such that a difference between the sound of the first loudspeaker and the sound of the second loudspeaker in a target band, which is a band to be adjusted, is reduced;
• and
• generating, in accordance with the adjustment amount, at least one or both frequency responses of at least one or both filters, which are at least one of a frequency response of a first filter that controls characteristics of the first audio signal supplied to the first loudspeaker, or a frequency response of a second filter that controls characteristics of the second audio signal supplied to the second loudspeaker, or both, while controlling a latency of the at least one or both filters in accordance with the latency value.