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US 10,483,931 B2Granted
Audio device, speaker device, and audio signal processing method
AssigneeYamaha Corporation
InventorsKatsumasa Kosuge, Tomoko Ninomiya
Life of this patent
Estimating the term…
Abstract
An audio device includes: a first detector configured to detect a volume of a first audio signal; and a low-frequency component adjuster configured to generate a second audio signal in which a level of a low-frequency component of the first audio signal is adjusted based on the volume detected by the first detector.
Claims19
An audio device comprising:
- a user interface that receives a user instruction to set a volume of an input signal;
- a volume control circuit that generates a first audio signal obtained by adjusting the volume of the input signal in accordance with the user instruction;
- filters that change frequency characteristics of the first audio signal;
- a first detecting circuit that detects a volume of the first audio signal where the frequency characteristics thereof have been changed by the filters;
- and
- a low-frequency component adjusting circuit that generates a second audio signal by:
- lowering a level of a low-frequency component of the first audio signal in a case where the volume detected by the first detecting circuit exceeds a first predetermined threshold;
- and
- without lowering the level of the low-frequency component of the first audio signal in a case where the volume detected by the first detecting circuit does not exceed the first predetermined threshold.
6 more elements
A speaker device comprising:
- an audio device comprising;
- a user interface that receives a user instruction to set a volume of an input signal;
- a volume control circuit that generates a first audio signal obtained by adjusting the volume of the input signal in accordance with the user instruction;
- filters that change frequency characteristics of the first audio signal;
- a first detecting circuit that detects a volume of the first audio signal where the frequency characteristics thereof have been changed by the filters;
- and
- a low-frequency component adjusting circuit that generates a second audio signal by:
- lowering a level of a low-frequency component of the first audio signal in a case where the volume detected by the first detecting circuit exceeds a predetermined threshold;
- and
- without lowering the level of the low-frequency component of the first audio signal in a case where the volume detected by the first detecting circuit does not exceed the first predetermined threshold;
- and
- at least one speaker that emits sound based on the second audio signal.
9 more elements
An audio signal processing method comprising:
- receiving an instruction to set a volume of an input signal;
- generating a first audio signal obtained by adjusting the volume of the input signal in accordance with a user instruction;
- changing frequency characteristics of the first audio signal;
- detecting a volume of the first audio signal where the frequency characteristics thereof have been changed;
- and
- generating a second audio signal by:
- lowering a level of a low-frequency component of the first audio signal in a case where the detected volume of the first audio signal exceeds a first predetermined threshold;
- and
- without lowering the level of the low-frequency component of the first audio signal in a case where the detected volume of the first audio signal does not exceed the first predetermined threshold.
6 more elements
Dependencies are inferred from the claim text.