专利名称：Adjusting the level of an audio signal发明人：Graham Watts申请号：US07/930661申请日：19921002公开号：US05268964A公开日：19931207
摘要：A system is disclosed for controlling the output level of an audio signal, in whicha voltage controlled amplifier (18) is provided in addition to a high fidelity motorizedfader (17). During normal (first mode) operation, the level of the audio signal iscontrolled directly by said fader, which may be adjusted in response to data from astorage device (23). On selecting a second mode of operation, the level of the audiosignal is controlled by means of the voltage controlled amplifier, arranged to receive saidstored data. In addition, said amplifier also receives trimming signals from said manuallyadjustable fader and movements of said fader in this mode are also stored, so that saidmodified data may be combined with the original data, to produce new data for use insaid first mode of operation. The invention provides \"trim mode\" while providing a highfidelity resistive fader for normal operation.
申请人：SOLID STATE LOGIC LIMITED
代理机构：Nixon & Vanderhye
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