Over the years, many methods have been devised to measure the frequency response of loudspeakers in a room. While they utilise differing technology and technique, they share a common problem: none of them produce results that accurately depict what human beings actually hear. They get close, but not close enough for accurate, high-quality results.

Anthony has developed the Sliding Band Integration Curve (SBIC), a technique for measuring the electro-acoustic response of sound systems in small rooms so that measurements and voicing adjustments directly correlate to what listeners actually hear. SBIC measures the direct field sound from the speaker to the listener position, and the total reverberated field of sound at the listener area. SBIC then conducts frequency-weighted averaging of the two responses and yields a resulting curve.

Since the SBIC response curve is the closest approximation of what a human would actually hear, the room correction, equalisation, and voicing can all be performed faster and more accurately because there is no second-guessing the data.

Anthony is currently in talks with two manufacturers to have SBIC incorporated into audio analysers. SBIC will also be included in auto-EQ products to improve resulting performance.