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Björn Morén
Björn Morén
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I'm trying to find the best piezo transducer for my project, which is a Morse code sender and receiver.

Since a piezo transducer can both act as a speaker and a microphone, and I only send/receive at a very specific frequency (700 Hz), and I only send or receive (not both at the same time,), I think I can pull this off with just a single transducer connected to both the ADC and DAC of my microcontroller.

When looking through component websites (Digikey, etc.,), I can't find any piezo transducers that have data for usage as microphones. Even though they are called transducers, the intention seem to be to only use them as speakers. To find the ideal component, I need to see microphone sensitivity, microphone noise level, etc.

Has anyone done something similar, and can give me some pointers?

I'm trying to find the best piezo transducer for my project, which is a Morse code sender and receiver.

Since a piezo transducer can both act as a speaker and a microphone, and I only send/receive at a very specific frequency (700 Hz), and I only send or receive (not both at the same time,) I think I can pull this off with just a single transducer connected to both the ADC and DAC of my microcontroller.

When looking through component websites (Digikey, etc.,) I can't find any piezo transducers that have data for usage as microphones. Even though they are called transducers, the intention seem to be to only use them as speakers. To find the ideal component, I need to see microphone sensitivity, microphone noise level, etc.

Has anyone done something similar, and can give me some pointers?

I'm trying to find the best piezo transducer for my project, which is a Morse code sender and receiver.

Since a piezo transducer can both act as a speaker and a microphone, and I only send/receive at a very specific frequency (700 Hz), and I only send or receive (not both at the same time), I think I can pull this off with just a single transducer connected to both the ADC and DAC of my microcontroller.

When looking through component websites (Digikey, etc.), I can't find any piezo transducers that have data for usage as microphones. Even though they are called transducers, the intention seem to be to only use them as speakers. To find the ideal component, I need to see microphone sensitivity, microphone noise level, etc.

Has anyone done something similar, and can give me some pointers?

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JRE
JRE
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Piezo transducer as both micmicrophone and speaker

I'm trying to find the best piezo transducer for my project, which is a Morse code sender and receiver.

Since a piezo transducer can both act as a speaker and a microphone, and I only send/receive at a very specific frequency (700 Hz), and I only send or receive (not both at the same time),) I think I can pull this off with just a single transducer connected to both the ADC and DAC of my microcontroller.

However,When looking through component websites (Digikey, etc).,) I can't find any piezo transducers that have data for usage as microphones. Even though they are called transducers, the intention seem to be to only use them as speakers. To find the ideal component, I need to see micmicrophone sensitivity, micmicrophone noise level, etc.

Has anyone done something similar, and can give me some pointers?

Piezo transducer as both mic and speaker

I'm trying to find the best piezo transducer for my project, which is a Morse code sender and receiver.

Since a piezo transducer can both act as a speaker and a microphone, and I only send/receive at a very specific frequency (700 Hz), and I only send or receive (not both at the same time), I think I can pull this off with just a single transducer connected to both the ADC and DAC of my microcontroller.

However, looking through component websites (Digikey, etc), I can't find any piezo transducers that have data for usage as microphones. Even though they are called transducers, the intention seem to be to only use them as speakers. To find the ideal component, I need to see mic sensitivity, mic noise level, etc.

Has anyone done something similar, and can give me some pointers?

Piezo transducer as both microphone and speaker

I'm trying to find the best piezo transducer for my project, which is a Morse code sender and receiver.

Since a piezo transducer can both act as a speaker and a microphone, and I only send/receive at a very specific frequency (700 Hz), and I only send or receive (not both at the same time,) I think I can pull this off with just a single transducer connected to both the ADC and DAC of my microcontroller.

When looking through component websites (Digikey, etc.,) I can't find any piezo transducers that have data for usage as microphones. Even though they are called transducers, the intention seem to be to only use them as speakers. To find the ideal component, I need to see microphone sensitivity, microphone noise level, etc.

Has anyone done something similar, and can give me some pointers?

Source Link
Björn Morén
Björn Morén
  • 133
  • 5

Piezo transducer as both mic and speaker

I'm trying to find the best piezo transducer for my project, which is a Morse code sender and receiver.

Since a piezo transducer can both act as a speaker and a microphone, and I only send/receive at a very specific frequency (700 Hz), and I only send or receive (not both at the same time), I think I can pull this off with just a single transducer connected to both the ADC and DAC of my microcontroller.

However, looking through component websites (Digikey, etc), I can't find any piezo transducers that have data for usage as microphones. Even though they are called transducers, the intention seem to be to only use them as speakers. To find the ideal component, I need to see mic sensitivity, mic noise level, etc.

Has anyone done something similar, and can give me some pointers?