| 摘要 |
An inexpensive to produce and small profile programmable filter bank with a high quality factor that applies an adjustable frequency response to an input signal to produce a filtered output signal. In a preferred embodiment, the programmable filter bank includes an input for receiving the input signal, an output for transmitting the filtered output signal and a set of interconnected individually selectable filter elements, where each filter element provides a predefined fixed frequency response. A control unit, such as a digital state machine or a microprocessor is connected to the filter elements and enables a user to select one or more filter elements in order to generate a desired overall frequency response, for application to the input signal, that is formed of the combination of the frequency responses of the selected filter element(s).
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