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The EM258 has a very useful ouptut at 40KHz.? ?At 80Khz it's almost nothing -- although it will still register something, just above the noise!

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MEMS microphone capsules like those listed here: ? ?have a much better ultrasonic response.

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On Mon, Oct 28, 2024 at 11:51 PM, Jonas Gruska wrote:

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Primo EM258 goes up to 80 kHz.

On Oct 29, 2024, at 08:45, cx b via <clistburnham=[email protected]> wrote:

Hi all -

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Any recommendations for cheap-ish electret elements that go up to 40kHz?

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Thanks!

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