Hi,
I am interested in making a simple mic amplifier circuit. I have just copied what is in this youtube vid but I have used an
CMEJ-0627-42-SP electret mic, it's one I just had lying around. When I play tones with my phone I can make out the waveform on the oscilloscope but it is not as good as the results seen in the video and the phone has to be very close. I have tried a few different preamplifier circuits before the LM386 stage but this didn't seem to make much difference or was actually worse. I am thinking that I might need a different mic. I don't have much electronics experience so that might well be very obvious just from looking at the datasheet. Can anyone recommend what model would be a better alternative? The budget is anything around the few dollars mark, ideally, I do not want a premade board from something like Sparkfun. What is it that I need to look out for when buying an electret mic to make sure it will give the best output?
Thanks for any help and suggestions
I am interested in making a simple mic amplifier circuit. I have just copied what is in this youtube vid but I have used an
CMEJ-0627-42-SP electret mic, it's one I just had lying around. When I play tones with my phone I can make out the waveform on the oscilloscope but it is not as good as the results seen in the video and the phone has to be very close. I have tried a few different preamplifier circuits before the LM386 stage but this didn't seem to make much difference or was actually worse. I am thinking that I might need a different mic. I don't have much electronics experience so that might well be very obvious just from looking at the datasheet. Can anyone recommend what model would be a better alternative? The budget is anything around the few dollars mark, ideally, I do not want a premade board from something like Sparkfun. What is it that I need to look out for when buying an electret mic to make sure it will give the best output?
Thanks for any help and suggestions