Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

How to detect the sound direction hardwiring?

Status
Not open for further replies.
A

awan

Advanced Member level 4
Joined
Jun 11, 2004
Messages
106
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,296
Location
Los Angeles
Activity points
815
sound detection

how to detect the sound direction hardwired
 

Re: sound detection

use a microphone and detect power changes
 

Re: sound detection

It is not clear what you need.

If you need to determine the arrival direction of the sound you need to apply beamforming techniques to an array of microphones.

Shortly beamforming takes the outputs of the microphones in the array and combine them in a way to cancel out the delays by wich the sound arrives to the different microphones.

Search the site for "beamforming"
 

Re: sound detection

hi,
i think that a simple solution could be the use of a microphone with a cardioid pattern.
If you put the signal in the null of the pattern, i.e. no sound received, you will have, this way, the direction of the source signal.

You could also compare max signal with minimum signal and have the same result.

hope this helps.
Ciao
 

Re: sound detection

If the sound is a tone,you can use two identical microphones.The phase difference between output signals represents the direction.
 

Re: sound detection

The military used a system in the past with 3 microphones in a triangular pattern to detect direction and range where a mortar was fired from. By using the speed of sound at a certain temp and the sequence of the frontal sound wave crossing the microphones, the distance and range could be calculated by a uP.
 

sound detection

For military purpose, sonar signal processing use this tecnniques which can detect the submarine and its location and speed.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top