Probably the most famous example of spread spectrum watermarking use is by Universal Music Group. Spread Spectrum came after ultrasound technology to solve this lack of robustness.
While this solves user experience issues for listeners, this method isn’t very robust and is removed by compression algorithms rendering it unusable for broadcasters who want to broadcast over platforms like YouTube or Netflix. The metadata can be hidden outside of the human-perceivable spectrum using this technology. Ultrasound watermarking gained popularity for being generally inaudible. Here’s a brief recap of the technologies before we show you some examples you can listen to. We have already written an in-depth guide about whether you can hear audio watermarks where we discuss the three technologies below in more detail. We recommend finding a quiet spot and getting your headphones on to really hear the difference! The Differences in Audibility For Various Watermarking Types In this post, we take you through the differences between the popular technologies and then let you hear the difference for yourself with some audio watermarking examples.
Audio watermarks allow for audio from musicians, broadcasters and others to be tracked, measured and can be used to engage audiences.Įven if you understand the theory behind the audio watermark, you might be wondering what the practical implications are. You may have heard of the different audio watermarking techniques by now.
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