Microphone to PIC

[mister_e]

well any speaker/earphone could be more directional. But their sensitivity are usually pretty bad too. Never tried with any earphone (walkman or else).

What range of frequency you need to detect?

One thing is sure, you'll have to use a high pass filter to avoid any type of interference caused by your robot motor/floor/gear noise.

I really have to do something like that one day. As many other i've buyed the Robosapiens, dismantle it... and let him gathering dust

And yes the mic signal is analog.

PS: you don't need to call me sir. I'm not as old as Darrel Taylor is

[Darrel Taylor]

Hey, Hey now! I resemble that remark.

As many other i've buyed the Robosapiens, dismantle it... and let him gathering dust.

<table><tr><td align=center valign=top>What? Like this ...

</td><td><br><br><br>

Sitting on the shelf, next to my Teddy. </td></tr></table>

[mister_e]

yeah! at least yours is in one piece

Some part of mine have been a little bit chewed by my dog... he will really need an extreme makeover... well the Robosapiens

[scaenix]

well any speaker/earphone could be more directional. But their sensitivity are usually pretty bad too. Never tried with any earphone (walkman or else).

What range of frequency you need to detect?

One thing is sure, you'll have to use a high pass filter to avoid any type of interference caused by your robot motor/floor/gear noise.

I really have to do something like that one day. As many other i've buyed the Robosapiens, dismantle it... and let him gathering dust

And yes the mic signal is analog.

Apologies for calling you "sir"...

Hmm... I guess I should by a mic though. I need to detect frequencies above 15KHz. I'm bit pressured now 'coz the project I'm making is due next friday and I'm still in the design stage. Actually, this project was just thought out last January after realizing that our previous project proposal for our class is not going to materialize.

[mister_e]

above 15khz make sure of your mic spectrum specs before. forget the speaker.

[scaenix]

above 15khz make sure of your mic spectrum specs before. forget the speaker.

i don't quite understand why i should "make sure of my mic spectrum before". before what? I'll use a tweeter instead of mic if i have to..

[mister_e]

speaker/tweeter are good to reproduce sound, but i doubt of their reliability/efficiency as microphone. Worth a try for sure.

[scaenix]

what would likely be better to use for the circuit? condenser or dynamic? can you suggest any easy method of determining the leg configuration of a 3 wire condenser mic? Thanks in advance.

[mister_e]

any model for this mic? is this a professionnal XLR connector or just a 3 wire capsule?

Any picture or part # would be handy.

Condenser or dynamic? Who knows, the best way will be to evaluate them with a pink noise and a spectrum analyser.

Few days ago i found the following freeware for someone here. I've tried it, and i'm really impressed how good it is... for a freeware.
http://www.sillanumsoft.com/