Geophone


![Single End Spread[2] & Split Stread[3]](/uploads/202501/15/Single_End_Spread_&_Split_Stread4137.jpg)
A geophone is a device that converts ground movement (velocity) into voltage, which may be recorded at a recording station. The deviation of this measured voltage from the base line is called the seismic response and is analyzed for structure of the earth.