Abstract: Methods, apparatus, systems and articles of manufacture to determine headphone adjustment for portable people meter listening to encoded audio streams are disclosed. An example system disclosed herein includes meter data analyzer circuitry to determine an audience estimate for streaming media based on media data measured by a media meter, the media meter to measure the streaming media based on an identification of the streaming media in ambient audio collected by a microphone of the media meter, and data analyzer circuitry to calculate at least one headphone adjustment factor based on a first determined proportion of an audience that listens to streaming media via headphones and a second determined proportion of the audience that listens to streaming media without headphones.

Abstract: Devices exist that can access and retrieve data from the Internet. These devices use a web-browser of some form to achieve this end. To retrieve a-rid render web-pages using a web-protocol, such as, for example, HTTP or WAP, requires a relatively sophisticated client device. Such a client device requires large amounts of memory and a relatively powerful processor to run the web-browser to access data sources such as, for example, the Internet directly. However, often users are only interested in specific, small volume, data such as a current share or stock price, exchange rate or temperature, for example. Hence, using such a relatively sophisticated device as described above to achieve a relative simple aim is unsuitable.