Abstract: A system for using an audio watermark to avoid double processing. The decoder inserts the audio watermark during a transient in the audio signal. This avoids the drawbacks of using out-of-band control signals or metadata. The decoder performs detecting a transient in a first audio signal, transforming a portion related to the transient into the frequency domain to compare a first band of the frequency domain data and a second band of the frequency domain data, when the first band is uncorrelated with the second band, the decoder performs processing on the first audio data to generate a second audio data, when the first band is correlated, the first audio data is used as the second audio data without performing any processing.

Abstract: Systems, methods, and computer program products implementing a sensor data prediction algorithm are disclosed. An example method comprises receiving motion data representing motions of a head-mounted listening device; transforming the motion data into quaternion domain; predicting, by one or more processors, future motions of the head-mounted listening device, the predicting including creating angular acceleration data from the transformed motion data and applying one or more smoothing filters to the angular acceleration data, the predicted future motions including rotation angles around corresponding axes in the quaternion domain; and providing the predicted future motions of the head-mounted listening device to a processor for adjusting a sound field presented by the listening device such that the sound field follows predicted movements of the head-mounted listening device.