Using sound to extract information

Thread starter lebman1
Start date Jan 26, 2010
Tags

Information Sound

AI Thread Summary

The discussion focuses on using sound for echolocation by analyzing the Doppler frequency as a function of time. Participants explore methods to describe the Doppler shift, which can provide insights into the velocity of a moving object. Additionally, the potential for using echo location to determine distances is highlighted. Techniques for recording and analyzing sound data are considered essential for this purpose. Overall, the conversation emphasizes the application of sound analysis in echolocation and velocity measurement.

Jan 26, 2010

lebman1

Hello,

I need to use sound to echolocate something. I need to find a way to describe the doppler frequency as a function of time, using a recording of the sound it makes while moving.

Any ideas?

Last edited: Jan 27, 2010

Physics news on Phys.org

Jan 26, 2010

Pythagorean

Science Advisor

The doppler shift can be analyzed for the velocity, echo location for distances.

Thread '1:1 versus 2:1 Mechanical Advantage debate'

The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...

View full post »

Thread 'Average velocity as a weighted mean'

Hello everyone, Consider the problem in which a car is told to travel at 30 km/h for L kilometers and then at 60 km/h for another L kilometers. Next, you are asked to determine the average speed. My question is: although we know that the average speed in this case is the harmonic mean of the two speeds, is it also possible to state that the average speed over this 2L-kilometer stretch can be obtained as a weighted average of the two speeds? Best regards, DaTario

View full post »

Thread 'Newton's first law?'

Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?

View full post »