Patent ID: 8331578
Filing Date: 2012-12-11
Classification: H04R

Abstract:
1. An apparatus comprising: a loudspeaker configured to convert an electrical input signal into an acoustic output signal; a connecting portion configured to interchangeably connect to either a first adapter or a second adapter where the first adapter is configured to fit in a user's ear canal and the second adapter is configured to fit to a user's concha; and a regulator for regulating sound pressure level created by the acoustic output signal at an ear drum of the user in dependence on whether the first adapter or the second adapter is connected to the connecting portion; wherein the regulator includes or is coupled to a detector for automatically detecting whether the first adapter or the second adapter is connected to the connecting portion; and in response to the detection the regulator is configured to filter the electrical input signal provided to the loudspeaker to control the acoustic output signal provided by the loudspeaker in dependence on whether the first adapter or the second adapter is connected to the connecting portion.