Sound processing apparatus and sound processing method
AssigneeYamaha Corporation
InventorRyotaro Aoki
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Abstract
A sound processing apparatus includes an information acquisition unit which acquires control information including at least one of mode information for designating a reproduction mode of the sound processing apparatus and attribute information for designating an attribute of an audio content represented by a sound signal, a frequency band expansion unit which performs frequency band expansion processing for adding an expanded component generated from the sound signal to the sound signal, and a control unit which changes parameters to be applied to the frequency band expansion processing in accordance with the control information acquired by the information acquisition unit.
Claims8
A sound processing apparatus, comprising:
- an information acquisition unit which acquires control information including at least one of mode information for designating a reproduction mode of the sound processing apparatus and attribute information for designating an attribute of an audio content represented by a sound signal;
- a frequency band expansion unit which performs frequency band expansion processing for adding an expanded component generated from the sound signal to the sound signal, wherein the frequency band expansion processing is performed based on the sound signal having undergone sound compression;
- and
- a control unit which changes parameters to be applied to the frequency band expansion processing in accordance with the control information acquired by the information acquisition unit, wherein
- the frequency band expansion unit shifts a fundamental component by a given shift amount in a specified frequency band of the sound signal on a frequency domain to generate the expanded component, and
- the control unit controls a frequency range of the specified frequency band and the given shift amount of the fundamental component in accordance with the control information acquired by the information acquisition unit.
A sound processing method, comprising:
- acquiring control information including at least one of mode information for designating a reproduction mode of a sound processing apparatus and attribute information for designating an attribute of an audio content represented by a sound signal;
- executing frequency band expansion processing for adding an expanded component generated from the sound signal to the sound signal, wherein the frequency band expansion processing is performed based on the sound signal having undergone sound compression;
- and
- changing parameters to be applied to the frequency band expansion processing in accordance with the acquired control information, wherein
- a fundamental component is shifted by a given shift amount in a specified frequency band of the sound signal on a frequency domain to generate the expanded component, and
- a frequency range of the specified frequency band and the given shift amount of the fundamental component are controlled in accordance with the acquired control information.
Dependencies are inferred from the claim text.