SOUND REPRODUCING APPARATUS, SOUND REPRODUCING METHOD, AND PROGRAM
First Claim
1. A sound reproducing apparatus comprising:
- a frequency characteristic setting portion that sets frequency characteristics of an input sound signal; and
a sound volume setting portion that variably controls a sound volume when a sound signal is output as sound, whereinthe frequency characteristic setting portion emphases a sound band including a band of human voice or attenuating bands other than the sound band, andthe sound volume setting portion compresses a dynamic range.
1 Assignment
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Accused Products
Abstract
Sound reproduction is controlled so as to be heard in the optimal state for the hearing function specific to elderly people. A frequency characteristic setting portion for setting the frequency characteristics of an inputted sound signal, and a sound volume setting portion for variable controlling the volume is disclosed. The frequency characteristic setting portion changes a frequency characteristic in which a sound band including a human voice band is emphasized to a frequency characteristic in which the characteristics of a gain in accordance with a frequency gradually becomes flat with an increase in the volume set by the sound volume setting portion. As a result, the frequency band of the human voice is strongly emphasized so as to help elderly people hear it at a low volume, and, as the volume grows higher, a frequency characteristic is changed to a flatter frequency characteristic, thereby making it possible to output easy-to-hear sound while reducing inconvenience caused by the emphasis of a specific frequency band.
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Citations
13 Claims
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1. A sound reproducing apparatus comprising:
- a frequency characteristic setting portion that sets frequency characteristics of an input sound signal; and
a sound volume setting portion that variably controls a sound volume when a sound signal is output as sound, whereinthe frequency characteristic setting portion emphases a sound band including a band of human voice or attenuating bands other than the sound band, and the sound volume setting portion compresses a dynamic range. - View Dependent Claims (13)
- a frequency characteristic setting portion that sets frequency characteristics of an input sound signal; and
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2. A sound reproducing apparatus comprising:
- a frequency characteristic setting portion that sets frequency characteristics of an input sound signal; and
a sound volume setting portion that variably controls a sound volume when a sound signal is output as sound, whereinthe frequency characteristic setting portion makes a change from frequency characteristics with a sound band including a band of human voice emphasized to frequency characteristics with gain characteristics corresponding to frequency gradually flattened in accordance with increase in the sound volume set by the sound volume setting portion. - View Dependent Claims (3, 4)
- a frequency characteristic setting portion that sets frequency characteristics of an input sound signal; and
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5. A sound reproducing apparatus comprising:
- a dynamic range setting portion that sets a dynamic range of an input sound signal; and
a sound volume setting portion that variably controls a sound volume when a sound signal is output as sound, whereinthe dynamic range setting portion makes a change so as to gradually increase a compression rate of the dynamic range in accordance with increase in the sound volume set by the sound volume setting portion. - View Dependent Claims (6)
- a dynamic range setting portion that sets a dynamic range of an input sound signal; and
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7. A sound reproducing apparatus comprising:
- a portion for extracting a common component from a plurality of sound signals respectively corresponding to a plurality of channels;
a portion for subtracting the common component from each of the plurality of sound signals to extract a component other than the common component;
a portion for changing gains of the extracted common component and the components other than the common component to mix the components; and
a sound volume setting portion for variably controlling a sound volume when a sound signal is output as sound, whereinthe sound reproducing apparatus reduces the gain of the common component in accordance with increase in the sound volume set by the sound volume setting portion. - View Dependent Claims (8)
- a portion for extracting a common component from a plurality of sound signals respectively corresponding to a plurality of channels;
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9. A sound reproducing method executed by a sound reproducing apparatus that sets frequency characteristics of an input sound signal, the sound reproducing apparatus variably controlling a sound volume when a sound signal is output as sound, the method comprising the step of:
emphasizing a sound band including a band of human voice or attenuating bands other than the sound band, and compressing a dynamic range by the sound reproducing apparatus.
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10. A sound reproducing method executed by a sound reproducing apparatus that sets frequency characteristics of an input sound signal, and variably controls a sound volume when a sound signal is output as sound, wherein
the method has a step that the sound reproducing apparatus changes frequency characteristics from frequency characteristics with a sound band including a band of human voice emphasized to frequency characteristics with gain characteristics corresponding to frequency gradually flattened in accordance with increase in the sound volume set at the time of sound output.
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11. A sound reproducing method executed by a sound reproducing apparatus that sets a dynamic range of an input sound signal, and variably controls a sound volume when a sound signal is output as sound, wherein
the method has a step that the sound reproducing apparatus changes a compression rate of the dynamic range so as to gradually increase the compression rate in accordance with increase in the sound volume set at the time of sound output.
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12. A sound reproducing method executed by a sound reproducing apparatus that extracts a common component from a plurality of sound signals respectively corresponding to a plurality of channels, subtracts the common component from each of the plurality of sound signals to extract a component other than the common component, changes gains of the extracted common component and the components other than the common component to mix the components, and variably controls a sound volume when a sound signal is output as sound, wherein
the method has a step that the sound reproducing apparatus reduces the gain of the common component in accordance with increase in the set sound volume.
Specification