In this mini project, you would design an acoustic echo-location sensor. Consider a 1D array of sound
speaker, receiver, and reflector at locations 0, 1, and 1.2 meters respectively on the x-axis. The receiver
would receive direct line of sight signals from the speaker as well as the reflections from the reflector. The
direct path and the reflected path are separated by 40cm. The channel impulse response (CIR) would
have two peaks separated by 40cm. Your goal would be to design a system that measures the distance
of the reflector from the receiver. The project would be evaluated based on a demo. The CIR peaks
corresponding to direct and reflected path would move relative to each other if the reflector is moved.
The echoes can be detected from the CIR. You need to design a training sequence at the transmitter to
be able to detect the CIR. You can use your own smartphones as transmitters and receivers to generate
and receive the sound signals.