PATENTS

摘要

TV viewers with impaired hearing get especially irritated when background sounds drown out dialogue—especially crowd noise during sports commentaries. Now that we have digital television broadcasting, says the Hearing Enhancement Company of Virginia, adjusting the relative level of dialogue to background noise should be easier (WO 01/65888). HEC points out that in a system in which the signal is always digitally compressed for transmission, and reconstituted in the receiver, background and dialogue sounds can be processed separately. Your receiver could then have a knob to vary the ratio of voice to background sound.