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by stinos
1024 days ago
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An analog jack should just be an analog signal, the beauty of it for applications like this being that it just works and for a variety of devices including the very first Sony Walkman to name just something which did not include any extra information. While in theory it is possible to encode extra and inaudible information in there, it seems more likely that if a car then knows what is playing it is just using Shazam or similar. |
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