Patent ID: 6650755
Filing Date: 2003-11-18
Classification: H04R

Abstract:
An apparatus comprising:a receiver that generates at least four distinct outputs from a received signal, the four outputs comprising a first channel output, a second channel output, a third channel output, and a fourth channel output, wherein the first and second channel outputs comprise voice signals having right and left spatial differentiation, respectively, and the third and forth channel outputs comprise remaining audio signals having right and left spatial differentiation, respectively, wherein the remaining audio signals are signals substantially other than voice signals; a first volume control having a first input operatively coupled via a first path to a first output, and a second input operatively coupled via a second path to a second output, the first input coupled to the first channel output and the second input coupled to the second channel output, wherein an adjustment of the first volume control causes an equal and simultaneous adjustment to volumes of signals on the first and second paths; a second volume control having a third input operatively coupled via a third path to a third output, and a fourth input operatively coupled via a fourth path to a fourth output, the third input coupled to the third channel output and the fourth input coupled to the fourth channel output, wherein an adjustment of the second volume control causes an equal and simultaneous adjustment to volumes of signals on the third and fourth paths; a first summing circuit having at least a first summing input, a second summing input, and a first summing output, the first summing input coupled to the first output, and the second summing input coupled to the third output; and a second summing circuit having at least a third summing input, a fourth summing input, and a second summing output, the third summing input coupled to the second output, and the fourth summing input coupled to the fourth output.