A few speaker180 degree out of phase. If you want mount on the fence, you can use tactile transducer, same 180 degree out of phase. It might require some testing to perfect this. That is what I use to cancel the sound from my home theater room. I have over 3000 watts (one 400 watt amp for each channel) for the theater, I used about 20 tactile transducers mounted strategically in between the drywalls to block the sound, after I spend some time tuning it, it works amazingly well now.
【在 g*****9 的大作中提到】 : A few speaker180 degree out of phase. : If you want mount on the fence, you can use tactile transducer, same 180 : degree out of phase. It might require some testing to perfect this. That is : what I use to cancel the sound from my home theater room. I have over 3000 : watts (one 400 watt amp for each channel) for the theater, I used about 20 : tactile transducers mounted strategically in between the drywalls to block : the sound, after I spend some time tuning it, it works amazingly well now.
l*l
18 楼
派个警察过去,啥都安静了。还free!
g*9
19 楼
I use this brand. http://www.clarksynthesis.com/ I bought a few cheap low quality amps to drive them. I used 2 mic in my set up to pick up the noise and send it back 180 degree out of phase to cancel. I have to fine tune each frequency a little bit to get the result you want. I am basically vibrating the walls to cancel it. You can use a outside mic and indoor mic to analyze both sound wave. Basically you will want the indoor mic to pick up very little, (the combined sound wave have least amount
【在 g*****9 的大作中提到】 : I use this brand. : http://www.clarksynthesis.com/ : I bought a few cheap low quality amps to drive them. : I used 2 mic in my set up to pick up the noise and send it back 180 degree : out of phase to cancel. : I have to fine tune each frequency a little bit to get the result you want. : I am basically vibrating the walls to cancel it. : You can use a outside mic and indoor mic to analyze both sound wave. : Basically you will want the indoor mic to pick up very little, (the combined : sound wave have least amount
【在 g*****9 的大作中提到】 : I use this brand. : http://www.clarksynthesis.com/ : I bought a few cheap low quality amps to drive them. : I used 2 mic in my set up to pick up the noise and send it back 180 degree : out of phase to cancel. : I have to fine tune each frequency a little bit to get the result you want. : I am basically vibrating the walls to cancel it. : You can use a outside mic and indoor mic to analyze both sound wave. : Basically you will want the indoor mic to pick up very little, (the combined : sound wave have least amount