DUBS Acoustic Filters are ear plugs designed by Doppler Labs and were released in 2014. They use a proprietary 17-piece physical acoustic filter system which reduces sound pressure at different frequencies whilst maintaining acoustical fidelity.
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{"type":"standard","title":"Peterborough United F.C.","displaytitle":"Peterborough United F.C.","namespace":{"id":0,"text":""},"wikibase_item":"Q19495","titles":{"canonical":"Peterborough_United_F.C.","normalized":"Peterborough United F.C.","display":"Peterborough United F.C."},"pageid":451132,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/en/thumb/d/d4/Peterborough_United.svg/320px-Peterborough_United.svg.png","width":320,"height":320},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/en/thumb/d/d4/Peterborough_United.svg/316px-Peterborough_United.svg.png","width":316,"height":316},"lang":"en","dir":"ltr","revision":"1286721562","tid":"801babb5-1eca-11f0-9d23-bb7edfaabae8","timestamp":"2025-04-21T16:05:53Z","description":"Association football club in England","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Peterborough_United_F.C.","revisions":"https://en.wikipedia.org/wiki/Peterborough_United_F.C.?action=history","edit":"https://en.wikipedia.org/wiki/Peterborough_United_F.C.?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Peterborough_United_F.C."},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Peterborough_United_F.C.","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Peterborough_United_F.C.","edit":"https://en.m.wikipedia.org/wiki/Peterborough_United_F.C.?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Peterborough_United_F.C."}},"extract":"Peterborough United Football Club is a professional association football club based in Peterborough,\nCambridgeshire, England. The team compete in League One, the third level of the English football league system.","extract_html":"
Peterborough United Football Club is a professional association football club based in Peterborough,\nCambridgeshire, England. The team compete in League One, the third level of the English football league system.
"}{"type":"standard","title":"Vladilen Mashkovtsev","displaytitle":"Vladilen Mashkovtsev","namespace":{"id":0,"text":""},"wikibase_item":"Q4286237","titles":{"canonical":"Vladilen_Mashkovtsev","normalized":"Vladilen Mashkovtsev","display":"Vladilen Mashkovtsev"},"pageid":9055823,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/en/d/d5/Vladilen_Mashkovtsev.jpg","width":266,"height":373},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/en/d/d5/Vladilen_Mashkovtsev.jpg","width":266,"height":373},"lang":"en","dir":"ltr","revision":"1255919180","tid":"330e7a65-9cdf-11ef-8115-f8e86441febf","timestamp":"2024-11-07T08:06:32Z","description":"Russian poet, writer, and journalist","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Vladilen_Mashkovtsev","revisions":"https://en.wikipedia.org/wiki/Vladilen_Mashkovtsev?action=history","edit":"https://en.wikipedia.org/wiki/Vladilen_Mashkovtsev?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Vladilen_Mashkovtsev"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Vladilen_Mashkovtsev","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Vladilen_Mashkovtsev","edit":"https://en.m.wikipedia.org/wiki/Vladilen_Mashkovtsev?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Vladilen_Mashkovtsev"}},"extract":"Vladilen Ivanovich Mashkovtsev was a Russian poet, writer and journalist. He wrote 15 books published in the Urals and in Moscow.","extract_html":"
Vladilen Ivanovich Mashkovtsev was a Russian poet, writer and journalist. He wrote 15 books published in the Urals and in Moscow.
"}