Measuring the speed of sound

length of (copper) tube = .569 m

time interval between echos = .0033 s

speed of sound = 2 * (.569 m) / (.0033 s) = 345 m/s

Modeling the copper pipe

This is a sound file that I recorded of the response of my pipe to an impulse (clapping): pipe sampled

The fourth impulse is the one that I used for my modeling. Here is the waveform for that impulse: pipe sampled waveform

As mentioned above, the period of the signal is .0033 seconds.

The amplitude of the peaks decays by an average factor of .584

Using this information, I made a crude model of the pipe. It is based around a single click, which is echoed with a period of .0033 seconds and a decay factor of .584

This is the sound file for my model pipe's response to a perfect impulse: pipe model

This is the waveform for the same model pipe: pipe model waveform

While this model doesn't sound a whole lot like the sample of the actual pipe, there are audible similarities if one listens closely.