Interesting. I wonder if the peak to peak substantially drops off or increases as you hit higher frequencies. Lucky me I can see the next test now as opposed to next week.
Higher pitch will result in a weaker vibration of the wooden surface so this experiment was good but still just a plain house experiment. Wish I had a lab to try various other surface such as metal, wood, plastic, plexi. Then I could do a report on what's the resonance frequencies of different materials. But that's the topic of a whole other world :P
Interesting ... just going from a quick observation it appears that at low frequencies, not only do the small diameters fail to transfer maximum energy but so do the large ones.
Yes it's interesting but wasn't that accurate for me so this is why I did the recording guitar experiment. The video will be online by Thursday and will give you a way better opinion and analysis of these different piezo. :)
great job man! I have a question if you don't mind: I started tinkering with mechanical watches a while ago and in watch making world there's a device called timegrapher which basically listens to the watch through a contact mic and analyzes the watches performance, there are apps and programs that do the same thing but the problem is if you use a normal mic the ambient noise screws the results or even prevents the program from picking up the signal. I did some research and found out that people are making their own pick up mic using piezo discs and everybody seems to get good results so I thought I'd do the same thing. I bought a generic PAM8403 amplifier and some piezo discs and connected the disc to the input of the amp and 3.5 mm jack to the output and at first I got terrible electric noise but then I switched from usb to batteries and the noise is basically gone now when I tap on the piezo disc I can see the signal loud and clear on Audacity no matter how lightly I tap it it's picking it but the problem is the damn thing isn't picking up the watch signal or at least it's picking it but it's too low and getting distorted by the very low electric noise that the amp naturally has. people who made this do't include detailed information about this and I have zero knowledge about electronics and now I don't know what to do. do you have any advice or ideas on how to make this work? I am really really sorry for the long comment but I'm eally desperate here.
Hey there, it is possible that your audio jack isn't shielded. Check this video to create a piezo contact mic and let me know if this helped: ruclips.net/video/3jduFLhjft0/видео.html&t
I have a PAM8043 form available and will use that!!!
This small amplifier should be enough to amplify the piezo's signal.
Needed equipment? Is the pcb audio IN OUT ? How many dB with a 34 mm disk ? How many meters deep can it detect a sound or voice ?
Interesting.
I wonder if the peak to peak substantially drops off or increases as you hit higher frequencies. Lucky me I can see the next test now as opposed to next week.
Higher pitch will result in a weaker vibration of the wooden surface so this experiment was good but still just a plain house experiment. Wish I had a lab to try various other surface such as metal, wood, plastic, plexi. Then I could do a report on what's the resonance frequencies of different materials. But that's the topic of a whole other world :P
Interesting ... just going from a quick observation it appears that at low frequencies, not only do the small diameters fail to transfer maximum energy but so do the large ones.
Yes it's interesting but wasn't that accurate for me so this is why I did the recording guitar experiment. The video will be online by Thursday and will give you a way better opinion and analysis of these different piezo. :)
great job man!
I have a question if you don't mind:
I started tinkering with mechanical watches a while ago and in watch making world there's a device called timegrapher which basically listens to the watch through a contact mic and analyzes the watches performance, there are apps and programs that do the same thing but the problem is if you use a normal mic the ambient noise screws the results or even prevents the program from picking up the signal.
I did some research and found out that people are making their own pick up mic using piezo discs and everybody seems to get good results so I thought I'd do the same thing.
I bought a generic PAM8403 amplifier and some piezo discs and connected the disc to the input of the amp and 3.5 mm jack to the output and at first I got terrible electric noise but then I switched from usb to batteries and the noise is basically gone now when I tap on the piezo disc I can see the signal loud and clear on Audacity no matter how lightly I tap it it's picking it but the problem is the damn thing isn't picking up the watch signal or at least it's picking it but it's too low and getting distorted by the very low electric noise that the amp naturally has.
people who made this do't include detailed information about this and I have zero knowledge about electronics and now I don't know what to do.
do you have any advice or ideas on how to make this work?
I am really really sorry for the long comment but I'm eally desperate here.
Hey there, it is possible that your audio jack isn't shielded. Check this video to create a piezo contact mic and let me know if this helped: ruclips.net/video/3jduFLhjft0/видео.html&t
thank you so much, I'll try it and tell you what happens
@@Ammar.D For sure! Let me know!