Patent ID: 9332103
Filing Date: 2016-05-03
CPC Classification: H04M,H04R,H04W

Claim Text:
1. A method for preventing acoustic shock in a portable communication device (PCD), comprising providing in the PCD a plurality of audio streams including a telephony audio stream and at least a second audio stream; reproducing the second audio stream using a loudspeaker in the PCD having a high capacity audio output capability; responsive to the occurrence of a telephony session, re-routing the second audio stream from the loudspeaker to a handset speaker in the PCD having a low capacity audio output capability, and reproducing the telephony audio stream and the second audio stream using the handset speaker; upon termination of the telephony session, re-routing the second audio stream from the handset speaker to the loudspeaker; subsequent to said re-routing gradually increasing an audio output drive level of the second audio stream over a period of time in accordance with a predetermined ramp function until the audio output drive level of the second audio stream corresponds with the predetermined output drive level setting for the second audio stream; and during said period of time, selectively reproducing with the loudspeaker a series of warning tones at the audio output drive level for the second audio stream as determined by the predetermined ramp function.