Sound processing device, sound control device, and sound control method
First Claim
Patent Images
1. A sound processing device, comprising:
- a first amplifier configured to amplify a sound signal to drive a first loudspeaker;
a first current detector configured to detect a value of a first electric current flowing into the first amplifier; and
a controller configured to;
predict a first predicted current value to flow into the first amplifier in accordance with a volume setting for the first amplifier and a level of the sound signal;
control whether to supply power to the first amplifier based on the first predicted current value and the value of the first electric current;
determine whether to mute the first amplifier based on the volume setting for the first amplifier, the level of the sound signal, and the value of the first electric current;
calculate a first threshold in accordance with the volume setting for the first amplifier and the level of the sound signal;
mute the first amplifier when the value of the first electric current exceeds the first threshold;
set a second threshold in accordance with a value of the first electric current flowing into the first amplifier being muted;
release the first amplifier from being muted when the value of the first electric current detected by the first current detector becomes not larger than the second threshold; and
halt the power supplied to the first amplifier when the value of the first electric current keeps exceeding the second threshold.
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Abstract
A sound processing device includes an amplifier, a current detector, and a controller. The amplifier amplifies a sound signal to drive a loudspeaker. The current detector detects a value of an electric current flowing into the amplifier. The controller controls whether to supply power to the amplifier based on a predicted current value and the current detected by the current detector. The predicted current value is predicted in accordance with a volume setting and a level of the sound signal.
5 Citations
8 Claims
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1. A sound processing device, comprising:
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a first amplifier configured to amplify a sound signal to drive a first loudspeaker; a first current detector configured to detect a value of a first electric current flowing into the first amplifier; and a controller configured to; predict a first predicted current value to flow into the first amplifier in accordance with a volume setting for the first amplifier and a level of the sound signal; control whether to supply power to the first amplifier based on the first predicted current value and the value of the first electric current; determine whether to mute the first amplifier based on the volume setting for the first amplifier, the level of the sound signal, and the value of the first electric current; calculate a first threshold in accordance with the volume setting for the first amplifier and the level of the sound signal; mute the first amplifier when the value of the first electric current exceeds the first threshold; set a second threshold in accordance with a value of the first electric current flowing into the first amplifier being muted; release the first amplifier from being muted when the value of the first electric current detected by the first current detector becomes not larger than the second threshold; and halt the power supplied to the first amplifier when the value of the first electric current keeps exceeding the second threshold. - View Dependent Claims (2, 3)
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4. A sound processing device, comprising:
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a first amplifier configured to amplify a sound signal to drive a first loudspeaker; a second amplifier configured to be connected to a second loudspeaker; a first current detector configured to detect a value of a first electric current flowing into the first amplifier; a second current detector configured to detect a value of a second electric current flowing into the second amplifier; and a controller configured to; predict a first predicted current value to flow into the first amplifier in accordance with a volume setting for the first amplifier and a level of the sound signal; control whether to supply power to the first amplifier based on the first predicted current value and the value of the first electric current; predict a second predicted current value to flow in the second amplifier in accordance with a volume setting for the second amplifier and the level of the sound signal; control whether to supply power to the second amplifier based on the second predicted current value and the value of the second electric current; determine whether to mute the first amplifier based on the volume setting for the first amplifier, the level of the sound signal, and the value of the first electric current; determine whether to mute the second amplifier based on the volume setting for the second amplifier, the level of the sound signal, and the value of the second electric current, calculate a first threshold in accordance with the volume setting for the first amplifier and the level of the sound signal; mute the first amplifier when the value of the first electric current exceeds the first threshold; set a second threshold in accordance with a value of the first electric current flowing into the first amplifier being muted; release the first amplifier from being muted when the value of the first electric current detected by the first current detector becomes not larger than the second threshold; halt the power supplied to the first amplifier when the value of the first electric current detected by the first current detector keeps exceeding the second threshold; calculate a third threshold in accordance with the volume setting for the second amplifier and the level of the sound signal; mute the second amplifier when the value of the second electric current exceeds the third threshold; set a fourth threshold in accordance with a value of the second electric current flowing into the second amplifier being muted; release the second amplifier from being muted when the value of the second electric current detected by the second current detector becomes not larger than the fourth threshold; and halt the power supplied to the second amplifier when the value of the second electric current detected by the second current detector keeps exceeding the fourth threshold. - View Dependent Claims (5, 6)
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7. A sound control device coupled to an amplifier that amplifies a sound signal to drive a loudspeaker, the sound control device comprising:
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a processor; and a memory storing a program configured to be executed by the processor, wherein the program, when executed by the processor, causes operations to be performed, the operations including; detecting a value of an electric current flowing into the amplifier; predicting a predicted current value to flow in the amplifier in accordance with a volume setting for the amplifier and a level of the sound signal; controlling whether to supply power to the amplifier based on the predicted current value and the detected value of the electric current flowing into the amplifier; determining whether to mute the amplifier based on the volume setting for the amplifier, the level of the sound signal, and the value of the electric current; calculating a first threshold in accordance with the volume setting for the amplifier and the level of the sound signal; muting the amplifier when the value of the electric current exceeds the first threshold; setting a second threshold in accordance with a value of the electric current flowing into the amplifier being muted; releasing the amplifier from being muted when the detected value of the electric current flowing into the amplifier becomes not larger than the second threshold; and halting the power supplied to the amplifier when the detected value of the electric current flowing into the amplifier keeps exceeding the second threshold.
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8. A method of controlling sound, the method comprising:
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detecting a value of an electric current flowing into an amplifier that amplifies a sound signal to drive a loudspeaker; predicting a predicted current value to flow in the amplifier in accordance with a volume setting for the amplifier and a level of the sound signal; controlling whether to supply power to the amplifier based on the predicted current value and the detected value of the electric current flowing into the amplifier; determining whether to mute the amplifier based on the volume setting for the amplifier, the level of the sound signal, and the value of the electric current; calculating a first threshold in accordance with the volume setting for the amplifier and the level of the sound signal; muting the amplifier when the value of the electric current exceeds the first threshold; setting a second threshold in accordance with a value of the electric current flowing into the amplifier being muted; releasing the amplifier from being muted when the detected value of the electric current flowing into the amplifier becomes not larger than the second threshold; and halting the power supplied to the amplifier when the detected value of the electric current flowing into the amplifier keeps exceeding the second threshold.
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Specification