Patent ID: 11917382
Assignee: YAMAHA CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An in-vehicle acoustic system, comprising:
a first amplifier configured to output a first audio signal to a first mid-range speaker through a first signal path;
a second amplifier configured to output a second audio signal to a second mid-range speaker through a second signal path;
a third amplifier configured to output a third audio signal to a first high-range speaker and a first low-range speaker; and
a fourth amplifier configured to output a fourth audio signal to a second high-range speaker and a second low-range speaker, wherein
the third audio signal is inputted to the first high-range speaker through a third signal path that goes from the third amplifier to the first high-range speaker,
the fourth audio signal is inputted to the second high-range speaker through a fourth signal path that goes from the fourth amplifier to the second high-range speaker,
the first audio signal is inputted to a deep-bass speaker through a fifth signal path that branches from the first signal path,
the third audio signal is inputted to the first low-range speaker through a sixth signal path that branches from the third signal path,
the fourth audio signal is inputted to the second low-range speaker through a seventh signal path that branches from the fourth signal path,
the first mid-range speaker, the first high-range speaker, and the first low-range speaker are on a same side that is one of a left side or a right side of a vehicle,
the second mid-range speaker, the second high-range speaker, and the second low-range speaker are on a side of the vehicle opposite to the first mid-range speaker,
the first high-range speaker, the first low-range speaker, the second high-range speaker, and the second low-range speaker are disposed at a front in a vehicle interior,
the first mid-range speaker, the second mid-range speaker, and the deep-bass speaker are disposed at a rear in the vehicle interior,
a reproduction frequency band of the first low-range speaker expands more on a low range side in comparison to a reproduction frequency band of the first mid-range speaker,
a reproduction frequency band of the second low-range speaker expands more on a low range side in comparison to a reproduction frequency band of the second mid-range speaker,
high frequency noise due to clipping of the first audio signal is not outputted from the first mid-range speaker based on the reproduction frequency band of the first mid-range speaker,
a reproduction frequency band of the first high-range speaker expands more on a high range side in comparison to the reproduction frequency band of the first mid-range speaker,
a reproduction frequency band of the second high-range speaker expands more on a high range side in comparison to the reproduction frequency band of the second mid-range speaker, and
a frequency distribution of the reproduction frequency band of the first low-range speaker, the reproduction frequency band of the first mid-range speaker, the reproduction frequency band of the first high-range speaker, the reproduction frequency band of the second low-range speaker, the reproduction frequency band of the second mid-range speaker, the reproduction frequency band of the second high-range speaker is measured at a rear seat located at the rear of the vehicle.