Patent ID: 9026433
Filing Date: 2015-05-05
Classification: G10L

Abstract:
1. A voice quality measurement device that measures voice quality of a decoded voice signal outputted from a voice decoder unit, the device comprising: a central processing unit (CPU) and a storage device configured to implement: a packet buffer unit that accumulates non-periodically arriving voice packets as voice information and outputs the voice information to the voice decoder unit periodically; and a voice information monitoring unit that monitors continuity of the voice information inputted to the voice decoder unit and calculates an index of voice quality of the decoded voice signal that reflects acceptability of the continuity; wherein the index that the voice information monitoring unit calculates is a proportion of decoder voice compensation processing, which is executed by the voice decoder unit, occurring in a unit of time; and wherein, if there is no voice information accumulated at a periodic output timing, the packet buffer unit outputs compensation processing request notice data at the periodic output timing, the compensation processing request notice data indicating that there is no voice information to output, and the voice information monitoring unit calculates the index, which is the proportion of decoder voice compensation processing executed by the voice decoder unit occurring in a unit of time, on the basis of the compensation processing request notice data.