发明名称 |
Sound field processor with sound field expanding apparatus |
摘要 |
A sound field expanding apparatus is formed from an L-channel sound field expanding circuit and an R-channel sound field expanding circuit that have substantially the same circuit structure. Left and right stereophonic input signals of two channels are input in the L-channel sound field expanding circuit and the R-channel sound field expanding circuit, respectively. The L-channel sound field expanding circuit and the R-channel sound field expanding circuit include a first amplitude/phase characteristic changing circuit and a second amplitude/phase characteristic changing circuit, respectively. The first amplitude/phase characteristic changing circuit and the second amplitude/phase characteristic changing circuit add specified amplitude/phase characteristics to the respective input signals to generate a specified sound field expanding effect. The first and second amplitude/phase characteristic changing circuits are formed on a single IC chip with switched capacitor filters, and have the same structure for both of the first and second amplitude/phase characteristic changing circuits.
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申请公布号 |
US6130948(A) |
申请公布日期 |
2000.10.10 |
申请号 |
US19970937766 |
申请日期 |
1997.09.25 |
申请人 |
YAMAHA CORPORATION |
发明人 |
HIRANO, MASAMITSU;MASAO, NORO |
分类号 |
H03H19/00;H04S1/00;H04S7/00;(IPC1-7):H04R5/00 |
主分类号 |
H03H19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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