Method for measuring the audience of content on terminals, by extracting digital watermarks and/or digital fingerprints from the audio component of the content

摘要

it is proposed a measurement method of a hearing before a streaming content over a computer network, or by downloading the process being implemented with a server sweeps and a plurality of terminals.a given terminal performs the following steps: (a) receiving a block tracing prior together with the content, or is associated with a block of trace content; (b) during the use of contents in a multimedia player is included in the terminal, makes the tracking block s: * obtained from the media player audio component content; extractingthe audio component is obtained, at least one digital watermark and / or at least a digital fingerprint comprising at least an absolute time index server; transmitting the audience measurement of trace messages, each with a unique identifier stored in the terminal system. at least one, and the digital watermark and / or the at least one digital footprint.