公开(公告)号：US20190341060A1

公开(公告)日：2019-11-07

申请号：US15973287

申请日：2018-05-07

Applicant: GOOGLE LLC

Inventor： Andrew Hines ,  Jan Skoglund ,  Andrew Allen ,  Miroslaw Narbutt

IPC: G10L19/008 ,  G10L19/16 ,  G10L19/022

Abstract: A computing device includes a processor and a memory. The processor is configured to generate spectrograms, for example, using short-time Fourier transform, for a plurality of channels of reference and test ambisonic signals. In some implementations, the test ambisonic signal may be generated by decoding an encoded version of the reference ambisonic signal. The processor is further configured to compare, for each of the plurality of channels of a reference ambisonic signal, at least a patch associated with a channel of the reference ambisonic signal with at least a corresponding patch of a corresponding channel of the test ambisonic signal and determine a localization accuracy of the test ambisonic signal based on the comparison. In some implementations, the comparing may be based on phaseograms of the reference and test ambisonic signals.

公开(公告)号：US10672405B2

公开(公告)日：2020-06-02

申请号：US15973287

申请日：2018-05-07

Applicant: GOOGLE LLC

Inventor： Andrew Hines ,  Jan Skoglund ,  Andrew Allen ,  Miroslaw Narbutt

IPC: G10L19/00 ,  G10L19/008 ,  G10L19/022 ,  G10L19/16

Abstract: A computing device includes a processor and a memory. The processor is configured to generate spectrograms, for example, using short-time Fourier transform, for a plurality of channels of reference and test ambisonic signals. In some implementations, the test ambisonic signal may be generated by decoding an encoded version of the reference ambisonic signal. The processor is further configured to compare, for each of the plurality of channels of a reference ambisonic signal, at least a patch associated with a channel of the reference ambisonic signal with at least a corresponding patch of a corresponding channel of the test ambisonic signal and determine a localization accuracy of the test ambisonic signal based on the comparison. In some implementations, the comparing may be based on phaseograms of the reference and test ambisonic signals.