Abstract: Audio processing method is described to continuously process an audio signal while changing between audio modes so that the listener does not experience a discontinuous sound during the transition. The first audio signal can be combined with the second audio signal to produce a smooth, continuous output signal that changes to only having the second audio signal over a time period. A global gain can be reduced during the transition from the first audio mode to a subsequent audio mode. Differences in the parameters from the first mode to the second mode can be determined and the parameters that differ are stepped from an initial value to a subsequent value over a transition time to produce a smooth audio signal.

Abstract: Audio processing method is described to continuously process an audio signal while changing between audio modes so that the listener does not experience a discontinuous sound during the transition. The first audio signal can be combined with the second audio signal to produce a smooth, continuous output signal that changes to only having the second audio signal over a time period. A global gain can be reduced during the transition from the first audio mode to a subsequent audio mode. Differences in the parameters from the first mode to the second mode can be determined and the parameters that differ are stepped from an initial value to a subsequent value over a transition time to produce a smooth audio signal.

Abstract: An in-vehicle entertainment system comprising an entertainment device configured to broadcast an audio signal, at least one set of headphones configured to receive the audio signal; and at least one microphone coupled to said entertainment device, wherein the entertainment device is configured to selectively attenuate the audio signal and to broadcast a mixed audio signal to the headphones when the microphone is activated.