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Exceed 30 Khz
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Adrian_Arg.:


I need a speaker or other element that can reproduce in 30 Khz and 40 Khz, since the speakers I have do not exceed 21Khz ..





Necesito un parlante o otro elemento que pueda reproducir en 30 Khz y 40 Khz, ya que los parlantes que tengo no superan los 21Khz..
oPossum:
Search for "ultrasonic transducer" and "ultrasonic distance sensor"

Gyro:
Piezoelectric and ribbon tweeters are often capable of significantly exceeding 20kHz - I don't think your ears can though!

As oPossum says, ultrasonic transducers are available that run at 40kHz and, I think, some maybe 32kHz but these are very narrow band tuned and not suitable for any other purpose (apart from bat detectors).
cliffyk:
cliffyk:

--- Quote from: Gyro on November 05, 2019, 07:02:27 pm ---Piezoelectric and ribbon tweeters are often capable of significantly exceeding 20kHz - I don't think your ears can though!

As oPossum says, ultrasonic transducers are available that run at 40kHz and, I think, some maybe 32kHz but these are very narrow band tuned and not suitable for any other purpose (apart from bat detectors).

--- End quote ---

The typical Arduino ultrasonic rangefinder module operates at 40 kHz.

They can be had for < $5.00 on Amazon.
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