The sound of silence: active noise control in exhaust mufflers

To date, the sound - and noise - of vehicles powered by internal combustion engines have mostly been influenced passively by specific muffler designs. A new technology dubbed "ActiveSilence" and "ActiveSound" enables car designers to actively shape the sound/noise by controlling special loudspeakers located in the exhaust system's hot end. By Subscribe to Automotive World … Continued

To date, the sound - and noise - of vehicles powered by internal combustion engines have mostly been influenced passively by specific muffler designs. A new technology dubbed "ActiveSilence" and "ActiveSound" enables car designers to actively shape the sound/noise by controlling special loudspeakers located in the exhaust system's hot end.

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https://www.automotiveworld.com/articles/90698-the-sound-of-silence-active-noise-control-in-exhaust-mufflers/

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