VLSI Circuits for a sampling digital acoustic energy meter

This paper introduces a method of measuring acoustic power digitally by employing VLSI circuit throughout the design. The method is based on sampling the voltage audio signals. These samples are then encoded via the appropriate A/D converter LSI chips to 8 bit representation together with the sign. The samples are multiplied through VLSI chip to yield a 16 bit format product. The product are then accumulated throughout a desired period suitable for acoustical observations. The sum of the products is taken at the end of that specified time. The system has the advantage of measuring acoustic power over a specified period of time irrespective of voltage waveforms. This will be useful for the subjective test of auditorium as it gives the study of the acoustical quality of halls and theatres.