D-Lew
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Get a program called Audacity, google it.
It's a really good sound editor and it's free.
Then in the menu you go to generate > tone
Then you enter frequency in HZ and what waveform you want, along with amplitude (volume) and length. And there you go.
You'll want to use near-subsonic sounds. 20-25 Hz is a good range, but my subwoofer doesn't play much below 30 I think, you will need to check your response range. When you get up near the 40's it becomes apparent what is going on.
It's a really good sound editor and it's free.
Then in the menu you go to generate > tone
Then you enter frequency in HZ and what waveform you want, along with amplitude (volume) and length. And there you go.
You'll want to use near-subsonic sounds. 20-25 Hz is a good range, but my subwoofer doesn't play much below 30 I think, you will need to check your response range. When you get up near the 40's it becomes apparent what is going on.