公开(公告)号：US20190172479A1

公开(公告)日：2019-06-06

申请号：US16270274

申请日：2019-02-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei XIAO ,  Mona HAKAMI ,  Willem Bastiaan KLEIJN

IPC: G10L25/60 ,  G10L15/02 ,  G10L25/03 ,  G10L25/30 ,  G06F17/18

Abstract: The disclosure relates to an apparatus for determining a quality score (MOS) for an audio signal sample, the apparatus comprising: an extractor configured to extract a feature vector from the audio signal sample, wherein the feature vector comprises a plurality of feature values and wherein each feature value is associated to a different feature of the feature vector; a pre-processor configured to pre-process a feature value of the feature vector based on a cumulative distribution function associated to the feature represented by the feature value to obtain a pre-processed feature value; and a processor configured to implement a neural network and to determine the quality score (MOS) for the audio signal sample based on the pre-processed feature value and a set of neural network parameters for the neural network associated to the cumulative distribution function.