Frequency speaker

[lock255]

I can not find the frequency range of the speaker phones. I was wondering if it was possible identify them in some way by a particular library in B4A.

 

[stevel05]

This would be a hardware specification which could vary from device to device. If it's really important to you and you have a decent microphone and recording software on your PC, you could measure it. There is an example of creating sine waves with the Audiotrack library if you need one.

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[lock255]

This would be a hardware specification which could vary from device to device. If it's really important to you and you have a decent microphone and recording software on your PC, you could measure it. There is an example of creating sine waves with the Audiotrack library if you need one.

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Not a bad idea, but in my opinion if it is not comfortable and simple, partly because I need to know what ultrasound can reproduce the speaker.

 

[stevel05]

Bearing in mind that this is consumer grade hardware, I'd be surprised if the internal DAC can produce much in the way of Ultrasound, let alone the speaker which is intended for voice and audio.

There is a thread here which discussed something similar, but the results fell short of producing ultrasound.

There may be some general information available on Google, or you'll have to test it yourself.

 

[lock255]

Bearing in mind that this is consumer grade hardware, I'd be surprised if the internal DAC can produce much in the way of Ultrasound, let alone the speaker which is intended for voice and audio.

There is a thread here which discussed something similar, but the results fell short of producing ultrasound.

There may be some general information available on Google, or you'll have to test it yourself.

Thank you for helping posted in the discussion, that library will be useful in a second phase.
I tried searching technical data concerning the frequency of some phone but I could not find anyone

 

[jalle007]

Well as lock256 posted those are consumer grade products and not industrial one so you will not cind much of the jnfo you need