Abstract: A multiple channel steered spatialized signal is generated from a signal input modified according to respective spatialization gain functions to generate a plurality of audio channels. An echo cancellation signal is applied to a return path using a combined spatialization and echo path estimate. The estimate is derived from the gain functions applied to the respective channels. When the gain functions applied in the respective channels are changed, for instance to represent a different apparent position of the sound source, a new estimate of the echo paths is generated, based on a previous estimate of the echo path and on the new gain functions.

Abstract: Audio apparatus (50) comprising a transducer and a coupler for coupling the transducer to a user's pinna. The coupler may be in the form of a hook (56), and leads (58) connect the audio apparatus (50) to a remote sound source. The transducer (52) is mounted to a lower straight end of the hook (56). An upper curved end of the hook (56) hooks over the junction between the user's ear and head so that the transducer (52) touches a lower rear face of the pinna adjacent the concha. The transducer excites vibration in the pinna whereby an acoustic signal from the transducer is transmitted to the user's inner ear by radiation of pressure waves and/or by conduction of vibrational energy through the outer and middle ear.