noise from electret condenser mic - a symptom?

I have a couple of devices with electret condenser mics - a couple of Windows CE devices and a built-in mic on an iPhone hands free adapter. The mics work but are noisy. Recordings on CE device have a rumbling noise over them (not from wind). With the iPhone adapter and other CE device, a popping sound appears every second or so over any recordings. The CE devices are ~10 yrs old & didn't have these symptoms until a couple of years ago. The iPhone adapters are probably a bad design (mismatched mic capsule?), I got a different batch of these cheap on Amazon and they don't have this problem. Anyway, does anyone recognize these symptoms as something that can be fixed by replacing the mic capsule?

 

[Sjouke Burry]

mad.scientist.jr@gmail.com wrote in
news:24611198.228.1319653509951.JavaMail.geo-discussion-forums@yqnv12:

I have a couple of devices with electret condenser mics - a couple of
Windows CE devices and a built-in mic on an iPhone hands free adapter.
The mics work but are noisy. Recordings on CE device have a rumbling
noise over them (not from wind). With the iPhone adapter and other CE
device, a popping sound appears every second or so over any
recordings. The CE devices are ~10 yrs old & didn't have these
symptoms until a couple of years ago. The iPhone adapters are probably
a bad design (mismatched mic capsule?), I got a different batch of
these cheap on Amazon and they don't have this problem. Anyway, does
anyone recognize these symptoms as something that can be fixed by
replacing the mic capsule?

uSE AN ENTER ONCE IN A WHILE??