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Electret Microphone - Record at highest fidelity?
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Electret Microphone - Record at highest fidelity?

by verygrimm on Tue May 14, 2013 2:11 pm

Hi,

I was going to post this question in your "other products" forum, but then thought that it might be an interesting question for "Ask an Engineer!".

The question: Using adafruit products, how can I acquire the highest fidelity recording from an Electret Microphone?

Disclaimer: I am a novice hobbyist.

I have a project where I want to compare readings from multiple microphones. I purchased three "Electret Microphone Amplifier - MAX4466 with Adjustable Gain", but after reading through the tutorials, and some of your forum posts, it seems that with an Arduino or Raspberry Pi, I can really only hope to get about 4000 samples per second. Apparently I lose a lot of data at that rate. According to a post by adafruit_support_rick (in this thread viewtopic.php?f=25&t=38638&p=191059&hilit=microphone#p191059), to read a 20-20KHz electret microphone at high fidelity, I would need to sample it at least 40,000 times per second. Which of your products can I use to acquire and save the best recording possible?

verygrimm
 
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Re: Electret Microphone - Record at highest fidelity?

by adafruit_support_bill on Tue May 14, 2013 2:17 pm

Here is a sketch for sampling at up to 100KHz (8-bit) or 60KHz (10 bit): viewtopic.php?f=31&t=30557&p=153175

adafruit_support_bill
 
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Re: Electret Microphone - Record at highest fidelity?

by verygrimm on Tue May 14, 2013 4:27 pm

Perfect! Thank you.

verygrimm
 
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Re: Electret Microphone - Record at highest fidelity?

by fourfaith on Wed May 15, 2013 2:56 am

F8913 [url]ZigBee module[/url]provides data transfer function by ZigBee network. It supports serial port that can conveniently and transparently connect one device to a ZigBee network, allowing you to connect to your existing serial devices with only simple configuration .
fourfaith
 
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Please be positive and constructive with your questions and comments.