DVE system with normalized selection
AssigneeDigisonix, Inc.
InventorsBrian M. Finn, Shawn K. Steenhagen
Life of this patent
Estimating the term…
Abstract
In a DVE, digital voice enhancement, communication system, the selection decision for choosing which microphone to be active is based on a given function of the speech of a respective talker relative to his/her acoustic environment at the respective microphone. The selection decision is based on a selection technique normalizing at least one of a) different microphone sensitivities and b) different background noise levels at the respective microphones, preferably based on the ratio of how much louder a talker speaks over the background noise at his/her respective microphone.
Claims16
A digital voice enhancement communication system comprising:
- a plurality of microphones;
- at least one loudspeaker;
- a switch for selecting which microphone to electrically couple to said at least one loudspeaker so that a listener at said at least one loudspeaker can hear the speech of a talker at the selected microphone, the selection decision being based on a given function of the speech of a respective talker relative to his/her acoustic environment at the respective microphone, wherein said selection decision is based on the ratio S N N R = f ( voice + noise ) f ( noise )
- where SNNR is the ratio of speech plus noise to noise, and f is a given function thereof.
A selection method for a digital voice enhancement communication system having a plurality of microphones, and at least one loudspeaker, comprising selecting which microphone to electrically couple to said at least one loudspeaker so that a listener at said at least one loudspeaker can hear the speech of a talker at the selected microphone, basing the selection decision on a given function of the speech of a respective talker relative to his/her acoustic environment at the respective microphone,
- and comprising basing the selection decision on the ratio S N N R = f ( voice + noise ) f ( noise )
- where SNNR is the ratio of speech plus noise to noise, and f is a given function thereof.
Dependencies are inferred from the claim text.