WATERMARKING AND USING SAME FOR AUDIENCE MEASUREMENT
First Claim
1. A method for watermarking an audio signal, the method comprising:
- embedding in the audio signal a watermark that includes a plurality of mute intervals of a predetermined characteristics.
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Abstract
A method for watermarking an audio signal may include embedding in the audio signal a watermark that includes a plurality of mute intervals of a predetermined characteristics. A method for audience measuring may include, for each media content item of a multi-content media broadcast, embedding a unique watermark that includes a plurality of mute intervals of a predetermined characteristics in an audio signal of that media content item. The method may further include, at a media player that plays a media content item from multi-content media broadcast, acquiring the audio signal of the media content item being played. The method may further include detecting the embedded watermark in that audio signal and comparing the detected embedded watermark with the unique watermark of each of the media content items of the multi-content media broadcast to determine which media content item of the multi-content media broadcast was played by the media player.
74 Citations
19 Claims
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1. A method for watermarking an audio signal, the method comprising:
embedding in the audio signal a watermark that includes a plurality of mute intervals of a predetermined characteristics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for audience measuring comprising:
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for each media content item of a multi-content media broadcast, embedding a unique watermark that includes a plurality of mute intervals of a predetermined characteristics in an audio signal of that media content item; at a media player that plays a media content item from multi-content media broadcast, acquiring the audio signal of the media content item being played; detecting the embedded watermark in that audio signal; and comparing the detected embedded watermark with the unique watermark of each of the media content items of the multi-content media broadcast to determine which media content item of the multi-content media broadcast was played by the media player. - View Dependent Claims (10, 11, 12, 13)
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14. An audience measuring system comprising:
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a receiver to acquire an audio signal of a media content item of a multi-content media broadcast which is played by a media player, wherein each media content item of the multi-content media broadcast includes an embedded unique watermark that includes a plurality of mute intervals of a predetermined characteristics in an audio signal of that media content item; a processor to detect the embedded watermark in that audio signal and to compare the detected embedded watermark with the unique watermark of each of the media content items of the multi-content media broadcast to determine which of the media content items of the multi-content media broadcast was played on the media player. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification