| 主权项 |
1. A system to reduce undesired audio, comprising:
a filter control, the filter control further comprising:
a first input to receive a main signal;a second input to receive a reference signal, the main signal has a main signal-to-noise ratio, the reference signal has a reference signal-to-noise ratio, wherein the reference signal-to-noise ratio is less than the main signal-to-noise-ratio, the filter control to create a control signal from the main signal and the reference signal; andan output, the output is configured to output the control signal; an adaptive noise cancellation unit, the adaptive noise cancellation unit receives as inputs the main signal, the reference signal, and the control signal, the adaptive noise cancellation unit further comprising:
an output, the adaptive noise cancellation unit is configured for control by the control signal in order to create an output signal, undesired audio in the main signal is reduced on the output signal; a single channel noise cancellation unit, the single channel noise cancellation unit further comprising:
a first input, anda second input, the output signal of the adaptive noise cancellation unit is received by the first input of the single channel noise cancellation unit, the received by coupled to the second input of the single channel noise cancellation unit, the single channel noise cancellation unit further reduces undesired audio from the output signal to provide mostly desired audio. |
