发明名称 |
Adaptive Korrekturschaltung für elektroakustische Schallsender |
摘要 |
An arrangement is provided for converting an electric signal into an acoustic or a mechanic signal comprising a transducer (11), a linear or nonlinear filter (1) with controllable parameters, a sensor (12), a controller (24), a reference filter (20) and a summer (17). The filter (1) is connected to the electric input of the transducer and is adaptively adjusted to compensate for the linear and/or nonlinear distortions of the transducer and to realize a desired overall transfer characteristic. The filter has for every controllable filter parameter an additional output (7) supplying a gradient signal to the controller and a control input (10). The summer (17) provides an error signal derived from the sensor output and reference filter output. The controller contains a circuit (53) for filtering the gradient signal and/or a circuit (25) for filtering the error signal, a multiplier (51) and an integrator (57) for producing a control signal to update every filter parameter. This arrangement omits off-line pre-training and adapts on-line for changing transducer characteristics caused by temperature, ageing and so on. |
申请公布号 |
DE4332804(C2) |
申请公布日期 |
1997.06.05 |
申请号 |
DE19934332804 |
申请日期 |
1993.09.27 |
申请人 |
KLIPPEL, WOLFGANG, DR., 01277 DRESDEN, DE |
发明人 |
KLIPPEL, WOLFGANG, DR., 01277 DRESDEN, DE |
分类号 |
H03H21/00;H04R3/04;(IPC1-7):H04R3/04;H03H11/00 |
主分类号 |
H03H21/00 |
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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