Microphones are
transducers. Which convert acoustic pressure waves into electrical signals.
Audio signals have become more integrated with series sensors and other
components, and MEMS technology is capable of shortening and providing
microphones with analog or digital outputs. Analog and digital microphone output
signal clear in one design Forms vary.।
Inside MEMS Microphone
MEMS microphones do not
have output mems from transducer elements. The transducer is essentially a
Variable Capacitor, which has a high output range gigaohm. Inside the
microphone, the transducer signal is first sent to the preamplifier to boost
the output impedance.
Analog Microphone
The
analog mic sends voice to direct audio ic and audio ic converts voice to
digital signal. There are two types of Analog Mic
1
two wire soldering mic
2
crystal Mic
Note:
Analog Mic has only two tips vdd which has 1.8v to 3.2v active voltage.
Digital Mic
Sends
the digital signal to direct audio ic. This mic has three suplay. VDD gives
active voltage to activate the mic. Second, the suplay voice of the data sends
the signal to the audio ic. The third clock converts anlog voice into digital
voice.
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