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公开(公告)号：US4076959A
公开(公告)日：1978-02-28
申请号：US730950
申请日：1976-10-08
CPC分类号： H03G9/14 , H03G3/10 , H03G5/10 , H04R2499/13 , H04S7/307
摘要： Control circuitry for a multi-channel audio system is disclosed which includes left and right signal processing channels and a DC control section. Each processing channel includes balance and volume sections which are connected with the DC control circuitry and controlled from respective balance and volume potentiometers connected with the DC control section. Each channel further includes a tone control section and more specifically treble and bass sections connected with the DC control circuitry and controlled from a tone potentiometer. The response of the bass section is also controlled as a function of the setting of the volume potentiometer to achieve a loudness function. The volume control circuitry is designed to produce a linear relationship between the DC control voltage and signal attenuation as measured in decibels. Current steering circuitry is employed in both amplitude and tone control.
摘要翻译： 公开了一种用于多声道音频系统的控制电路，其包括左和右信号处理通道以及DC控制部分。 每个处理通道包括与DC控制电路相连并由与DC控制部连接的相应的平衡和体积电位器控制的平衡和体积部分。 每个通道还包括音调控制部分，更具体地，与DC控制电路连接并由音调电位器控制的高音和低音部分。 低音部分的响应也作为音量电位器的设置来控制，以实现响度功能。 音量控制电路被设计为产生直流控制电压和信号衰减之间的线性关系，以分贝为单位。 电流控制电路用于幅度和音调控制。
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公开(公告)号：US3952161A
公开(公告)日：1976-04-20
申请号：US516797
申请日：1974-10-21
CPC分类号： H04S1/00 , H04B1/1684
摘要： An audio processor is disclosed which includes circuitry for modifying pure left and right audio signals by blending the left audio signal with the right audio signal as a function of frequency and for rolling off the higher frequencies of the blended signal. The processor further includes circuitry for selecting complementary portions of a blended, rolled-off audio signal and a pure audio signal as a function of the RF carrier strength to improve the overall listenability of the audio.
摘要翻译： 公开了一种音频处理器，其包括用于通过将左音频信号与作为频率的函数的正确音频信号混合并用于滚动混合信号的较高频率来修改纯左和右音频信号的电路。 处理器还包括用于根据RF载波强度来选择混合，滚降音频信号和纯音频信号的互补部分的电路，以提高音频的整体可听性。
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3.发明授权Voltage translating circuit for volume and balance control of a four-channel audio system 失效用于四声道音频系统的音量和平衡控制的电压转换电路
公开(公告)号：US4113984A
公开(公告)日：1978-09-12
申请号：US741805
申请日：1976-11-15
申请人： William F. Gilbert , Larry D. Lucas
发明人： William F. Gilbert , Larry D. Lucas
CPC分类号： H04S7/00
摘要： Audio control circuitry for a four-channel system is disclosed which permits volume adjustment from a single master volume control potentiometer and balance adjustment from a single left-right balance potentiometer and a single front-rear balance control potentiometer.
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