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Featuring 136 sonic logos from major brands across the US and UK, the SoundOut Index analyses responses from over 30,000 consumers to rank each on appeal, recall, propensity to buy, recognition, attribution, 200+ brand attributes, archetypes and BrandMatch.  These metrics feed into overall rankings for Effectiveness, Personality and Market Penetration, resulting in the definitive 2021 league table of US and UK sonic logos.

The SoundOut Index 2021

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