As multimedia and music phones grow in popularity, consumers want an iPod-quality, uninterrupted audio experience without the buzzing and clicks associated with wireless transmission. This article describes the problems delivering high power and high quality audio in music-enabled mobile phones and how a supercapacitor can overcome them. Typically, the audio amplifier power supply input in a mobile phone is connected directly to Vbattery. This paper compares audio performance between the typical setup and connecting the audio amp supply to a supercapacitor charged to 5V through a current limited boost converter.
Author:
Mars, Pierre
Affiliation:
CAP-XX (Australia) Pty Ltd.
AES Convention:
123 (October 2007)
Paper Number:
7206
Publication Date:
October 1, 2007
Subject:
Applications in Audio
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