公开(公告)号：US10978091B2

公开(公告)日：2021-04-13

申请号：US16205328

申请日：2018-11-30

Applicant: ACADEMIA SINICA

Inventor： Yu Tsao ,  Syu-Siang Wang

IPC: G10L25/69 ,  G06F40/20 ,  G08G1/01 ,  G10L21/02 ,  G10L25/06 ,  G10L15/30 ,  G10L15/22 ,  G10L15/02 ,  G10L25/03

Abstract: A system is provided to realize suppression by selecting wavelets for feature compression in distributed speech recognition. The system comprises a first device and a second device. The first device comprising: a first network module for connecting to a network; an acoustic transducer module for recording speech and outputting frames of recorded signal; and a first processor configured for the following: extracting multiple-dimensional speech features from the frames of the recorded signal to generate multiple feature sequences; applying discrete wavelet transform (DWT) to the feature sequences to obtain a plurality of component data; and transmitting at least one of the plurality of component data via the network, wherein another one of the plurality of component data is not transmitted. The second device comprising: a second network module for connecting to the network and receiving the at least one of the plurality of component data from the first device; and a second processor configured for the following: updating the received data to generate an updated data; and applying inverse discrete wavelet transform (IDWT) to the updated data to obtain reconstructed speech data.