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    • 32. 发明授权
    • Audio processing unit for mixing L channel and R channel of CD/CD-1
audio signal
    • 用于混合CD / CD-1音频信号的L声道和R声道的音频处理单元
    • US5764775A
    • 1998-06-09
    • US550874
    • 1995-10-31
    • Jong-Dae Kim
    • Jong-Dae Kim
    • H04R5/02G11B7/00G11B7/005G11B20/00G11B20/14H04S1/00H04S7/00H04R5/00
    • G11B20/00992
    • Audio process units for controllably mixing L-channel and R-channel portions of a CD/CD-I audio signal each use a single attenuator (or digital multiplier) for developing L*G(LL), L*G(LR), R*G(RR) and R*G(RL) responses to L-channel and R-channel input signals through time sharing processing. This reduces the amount of digital hardware required for developing these responses. The L*G(LL) and R*G(RL) responses are additively combined to generate an L-channel output signal; and the R*G(RL) and R*G(RR) responses are additively combined to generate an R-channel output signal. L*G(LL), L*G(LR), R*G(RL) and R*G(RR) responses are successively generated on a cyclic basis in one type of such audio process unit, using a successive-shift-and-selective-accumulation digital multiplication procedure to generate each response. L*G(LR), L*G(LL), R*G(RL) and R*G(RR) responses are successively generated on a cyclic basis in an altenative type of such audio process unit, using a successive-shift-and-selective-accumulation digital multiplication procedure to generate each response.
    • 用于可控地混合CD / CD-1音频信号的L声道和R声道部分的音频处理单元各自使用单个衰减器(或数字乘法器)来显影L * G(LL),L * G(LR),R * G(RR)和R * G(RL)通过时间共享处理对L通道和R通道输入信号的响应。 这减少了开发这些响应所需的数字硬件的数量。 L * G(LL)和R * G(RL)响应被相加地组合以产生L信道输出信号; 并且R * G(RL)和R * G(RR)响应被相加地组合以产生R信道输出信号。 在一种类型的这种音频处理单元中,循环地依次生成L * G(LL),L * G(LR),R * G(RL)和R * G(RR) 和选择性累积数字乘法程序来产生每个响应。 在这种音频处理单元的增强型中,循环地连续地生成L * G(LR),L * G(LL),R * G(RL)和R * G(RR) - 选择性累积数字乘法程序来产生每个响应。