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Topic: Using Aduino to Create Ultrasound (Read 453 times) previous topic - next topic

Suj1122

I want to make an ultrasound with Aduino. However, I have bought several speakers, but there is a lot of noise when it reaches 17,000 Hz. So it can't generate clean ultrasound.

Then one day, the professor told me to use the sound card. Aduino amplifier is often seen, but the sound card that improves the quality of sound does not come out even after many Googleings.

So I want to ask is Arduino's sound card is known as anything else? And if there is any company or product that you can recommend, please let me know

gilshultz

First and most important speakers are not designed to operate at ultrasound frequencies, get an ultrasonic transducer. You can actually generate the signal by using one of the timer outputs, once started no software needed until reset.
Good Luck & Have Fun!
Gil

Grumpy_Mike

Quote
So I want to ask is Arduino's sound card is known as anything else?
The Arduino does not have a sound card as such. Depending on what waveforms you want at ultrasonic frequencies you can either use a PWM signal from a timer, as mentioned above. Or you can look for a signal generator, that can generate all sorts of waveforms like sun waves and triangle waves as well as square waves.

TheMemberFormerlyKnownAsAWOL

AD9850 DDS (and similar) boards are dirt-cheap, easy to program and interface, giving something like 0.03Hz resolution over a 0-60MHz range.
Please don't PM technical questions - post them on the forum, then everyone benefits/suffers equally

MarkT

I want to make an ultrasound with Aduino. However, I have bought several speakers, but there is a lot of noise when it reaches 17,000 Hz. So it can't generate clean ultrasound.

Then one day, the professor told me to use the sound card. Aduino amplifier is often seen, but the sound card that improves the quality of sound does not come out even after many Googleings.

So I want to ask is Arduino's sound card is known as anything else? And if there is any company or product that you can recommend, please let me know
You neglected to post either your code or circuit....
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

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