Title:
VOICE OBJECTIVE EVALUATION DEVICE AND PROGRAM THEREFOR
Document Type and Number:
Japanese Patent JP2022036862
Kind Code:
A
Abstract:
To provide a voice objective evaluation device and a program therefor that make it possible to acquire a closer objective evaluation value by comparing a playback signal of a compressed encoded sound of an arbitrary voice encoding system with a playback signal of an uncompressed sound.SOLUTION: A voice objective evaluation device 1 according to the present patent comprises: an analysis unit 11 which inputs a playback signal of a compressed encoded sound as object of analysis of objective evaluation and a playback signal of an uncompressed sound corresponding thereto, segments the playback signals of the compressed encoded sound and uncompressed sound at intervals of a certain time, respectively, and at least calculates auditory distortion characteristic data represented by the ratio of a difference in energy and a masking quantity for every predetermined number of critical bands grouped for a difference frequency spectrum obtained by comparing the uncompressed sound and compressed encoded sound according to an auditory model for machine learning; and a recognition model unit 12 which is composed of a neural network having learnt objective evaluation value as teaching data in advance, and calculates objective evaluation value related to the compressed encoded sound based upon the auditory distortion characteristic data and then outputs it to the outside.SELECTED DRAWING: Figure 1
Inventors:
OGURA TOMOMI
Application Number:
JP2020141288A
Publication Date:
March 08, 2022
Filing Date:
August 24, 2020
Export Citation:
Assignee:
JAPAN BROADCASTING CORP
International Classes:
G10L25/69; G06N3/08; G06N20/00; G10L25/18; G10L25/30
Attorney, Agent or Firm:
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