公开(公告)号：US20230098063A1

公开(公告)日：2023-03-30

申请号：US17994554

申请日：2022-11-28

Applicant: SAS Institute Inc.

Inventor： XIAOLONG LI ,  Xiaozhuo Cheng ,  Samuel Norris Henderson ,  Xu Yang

IPC: G10L15/26 ,  G10L15/02 ,  G10L25/30 ,  G10L15/04 ,  G10L25/78

Abstract: An apparatus includes a processor to: receive a request to perform speech-to-text conversion of a speech data set; perform pause detection to identify a set of likely sentence pauses and/or speaker diarization technique to identify a set of likely speaker changes; based the set of likely sentence pauses and/or the set of likely speaker changes, divide the speech data set into data segments representing speech segments; use an acoustic model with the data segments to derive sets of probabilities of speech sounds uttered; store the sets of probabilities in temporal order within a buffer queue; distribute the sets of probabilities from the buffer queue in temporal order among threads of a thread pool; and within each thread, and based on set(s) of probabilities, derive one candidate word and select either the candidate word or an alternate candidate word derived from a language model as the next word most likely spoken.

公开(公告)号：US20220028396A1

公开(公告)日：2022-01-27

申请号：US17498966

申请日：2021-10-12

Applicant: SAS Institute Inc.

Inventor： XIAOLONG LI ,  XIAOZHUO CHENG ,  XU YANG

IPC: G10L15/26 ,  G10L15/04 ,  G10L15/187

Abstract: An apparatus includes processor(s) to: perform pre-processing operations including derive an audio noise level of speech audio of a speech data set, derive a first relative weighting for first and second segmentation techniques for identifying likely sentence pauses in the speech audio based on the audio noise level, and select likely sentence pauses for a converged set of likely sentence pauses from likely sentence pauses identified by the first and/or second segmentation techniques based on the first relative weighting; and perform speech-to-text processing operations including divide the speech data set into data segments representing speech segments of the speech audio based on the converged set of likely sentence pauses, and derive a second relative weighting based on the audio noise level for selecting words indicated by an acoustic model or by a language model as being most likely spoken in the speech audio for inclusion in a transcript.

公开(公告)号：US20210295845A1

公开(公告)日：2021-09-23

申请号：US17138445

申请日：2020-12-30

Applicant: SAS Institute Inc.

Inventor： XIAOZHUO CHENG ,  XU YANG ,  XIAOLONG LI

IPC: G10L15/26 ,  G10L15/04 ,  G10L25/78 ,  G10L25/30 ,  G06N3/08 ,  G06N3/04

Abstract: An apparatus includes processor(s) to: divide a speech data set into multiple data chunks that each represent a chunk of speech audio; derive a threshold amplitude based on at least one peak amplitude of the speech audio; designate each data chunk with a peak amplitude below the threshold amplitude a pause data chunk; within a set of temporally consecutive data chunks of the multiple data chunks, identify a longest subset of temporally consecutive pause data chunks; within the set of temporally consecutive data chunks, designate the longest subset of temporally consecutive pause data chunks as a likely sentence pause of a candidate set of likely sentence pauses; based on at least the candidate set, divide the speech data set into multiple data segments that each represent a speech segment of the speech audio; and perform speech-to-text conversion, to identify a sentence spoken in each speech segment.

公开(公告)号：US20220335947A1

公开(公告)日：2022-10-20

申请号：US17851264

申请日：2022-06-28

Applicant: SAS Institute Inc.

Inventor： XIAOLONG LI ,  Samuel Norris Henderson ,  Xiaozhuo Cheng ,  Xu Yang

IPC: G10L15/26 ,  G10L15/04 ,  G10L25/78 ,  G06N3/08 ,  G06N3/04 ,  G10L25/30 ,  G10L15/02

Abstract: An apparatus includes at least one processor to, in response to a request to perform speech-to-text conversion: perform a pause detection technique including analyzing speech audio to identify pauses, and analyzing lengths of the pauses to identify likely sentence pauses; perform a speaker diarization technique including dividing the speech audio into fragments, analyzing vocal characteristics of speech sounds of each fragment to identify a speaker of a set of speakers, and identifying instances of a change in speakers between each temporally consecutive pair of fragments to identify likely speaker changes; and perform speech-to-text operations including dividing the speech audio into segments based on at least the likely sentence pauses and likely speaker changes, using at least an acoustic model with each segment to identify likely speech sounds in the speech audio, and generating a transcript of the speech audio based at least on the likely speech sounds.

公开(公告)号：US20220028395A1

公开(公告)日：2022-01-27

申请号：US17498811

申请日：2021-10-12

Applicant: SAS Institute Inc.

Inventor： XIAOLONG LI ,  XIAOZHUO CHENG ,  XU YANG

IPC: G10L15/26 ,  G10L15/04 ,  G06N3/04 ,  G10L15/02 ,  G10L25/30 ,  G06N3/08 ,  G10L25/78

Abstract: An apparatus includes processor(s) to: perform preprocessing operations of a segmentation technique including divide speech data set into data chunks representing chunks of speech audio, use an acoustic model with each data chunk to identify pauses in the speech audio, and analyze a length of time of each identified pause to identify a candidate set of likely sentence pauses in the speech audio; and perform speech-to-text operations including divide the speech data set into data segments that each representing segments of the speech audio based on the candidate set of likely sentence pauses, use the acoustic model with each data segment to identify likely speech sounds in the speech audio, analyze the identified likely speech sounds to identify candidate sets of words likely spoken in the speech audio, and generate a transcript of the speech data set based at least on the candidate sets of words likely spoken.