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
You neglected to post either your code or circuit....