| 摘要 |
The disclosure describes a digital acoustic direction determination system comprising a plurality of transducers each capable of producing electrical signals in response to an acoustic wave. Selection logic circuitry determines the octant or 45 degree arc segment from which the sound originates and transmits an octant digital number representing the octant to an adder. As soon as the wave strikes one of the transducers, a clock generator begins to step a shift register which has stored in it a predetermined bit pattern. The sum of the pulses shifted out of the shift register is proportional to the angle within the selected octant from which the sound originates. These pulses are summed in a counter. The contents of the counter are summed in the adder with the digital number representing the octant. The resultant sum is the exact bearing of the sound origin in degrees.
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