Patent ID: 8295498

Claim:
An audio processing circuit configured to provide acoustic crosstalk cancellation for left and right audio signals, said audio processing circuit including a crosstalk cancellation circuit comprising: a first direct-path filter configured to receive a right input audio signal and output it as a right-to-right direct-path signal, and a second direct-path filter configured to receive a left input audio signal and output it as a left-to-left direct-path signal; a first cross-path filter configured to receive the right input audio signal and output it as a right-to-left cross-path signal having an attenuation set by a first configurable attenuation parameter and a time delay set by a first configurable delay parameter, and a second cross-path filter configured to receive the left input audio signal and output it as a left-to-right cross-path signal having an attenuation set by a second configurable attenuation parameter and a time delay set by a second configurable delay parameter; and a first combining circuit configured to output a crosstalk-compensated right audio signal by combining the right-to-right direct-path signal with the left-to-right cross-path signal, and a second combining circuit configured to output a crosstalk-compensated left audio signal by combining the left-to-left direct-path signal with the right-to-left cross-path signal.