公开(公告)号：US20170256271A1

公开(公告)日：2017-09-07

申请号：US15600321

申请日：2017-05-19

Applicant: Google Inc.

Inventor： Richard Francis Lyon ,  Ron Weiss ,  Thomas Chadwick Walters

IPC: G10L21/0356 ,  G10L21/0308 ,  G10L25/51 ,  G10L21/0388

CPC classification number: G10L21/0356 ,  G10L21/02 ,  G10L21/0272 ,  G10L21/028 ,  G10L21/0308 ,  G10L21/0388 ,  G10L25/51 ,  G10L2021/02087

Abstract: Systems and methods facilitating removal of content from audio files are described. A method includes identifying a sound recording in a first audio file, identifying a reference file having at least a defined level of similarity to the sound recording, and processing the first audio file to remove the sound recording and generate a second audio file. In some embodiments, winner-take-all coding and Hough transforms are employed for determining alignment and rate adjustment of the reference file in the first audio file. After alignment, the reference file is filtered in the frequency domain to increase similarity between the reference file and the sound recording. The frequency domain representation (FR) of the filtered version is subtracted from the FR first audio and the result converted to a time representation of the second audio file. In some embodiments, spectral subtraction is also performed to generate a further improved second audio file.

公开(公告)号：US09679579B1

公开(公告)日：2017-06-13

申请号：US15186993

申请日：2016-06-20

Applicant: Google Inc.

Inventor： Richard Francis Lyon ,  Ron Weiss ,  Thomas Chadwick Walters

IPC: G10L21/028 ,  G10L21/0356 ,  G10L25/51 ,  G10L21/0308 ,  G10L21/0388

CPC classification number: G10L21/0356 ,  G10L21/02 ,  G10L21/0272 ,  G10L21/028 ,  G10L21/0308 ,  G10L21/0388 ,  G10L25/51

Abstract: Systems and methods facilitating removal of content from audio files are described. A method includes identifying a sound recording in a first audio file, identifying a reference file having at least a defined level of similarity to the sound recording, and processing the first audio file to remove the sound recording and generate a second audio file. In some embodiments, winner-take-all coding and Hough transforms are employed for determining alignment and rate adjustment of the reference file in the first audio file. After alignment, the reference file is filtered in the frequency domain to increase similarity between the reference file and the sound recording. The frequency domain representation (FR) of the filtered version is subtracted from the FR first audio and the result converted to a time representation of the second audio file. In some embodiments, spectral subtraction is also performed to generate a further improved second audio file.

公开(公告)号：US09373320B1

公开(公告)日：2016-06-21

申请号：US13972262

申请日：2013-08-21

Applicant: Google Inc.

Inventor： Richard Francis Lyon ,  Ron Weiss ,  Thomas Chadwick Walters

IPC: G10L21/028 ,  G10L13/033 ,  G10L21/02 ,  G10L21/0272 ,  G10L21/0308

CPC classification number: G10L21/0356 ,  G10L21/02 ,  G10L21/0272 ,  G10L21/028 ,  G10L21/0308 ,  G10L21/0388 ,  G10L25/51

Abstract: Systems and methods facilitating removal of content from audio files are described. A method includes identifying a sound recording in a first audio file, identifying a reference file having at least a defined level of similarity to the sound recording, and processing the first audio file to remove the sound recording and generate a second audio file. In some embodiments, winner-take-all coding and Hough transforms are employed for determining alignment and rate adjustment of the reference file in the first audio file. After alignment, the reference file is filtered in the frequency domain to increase similarity between the reference file and the sound recording. The frequency domain representation (FR) of the filtered version is subtracted from the FR first audio and the result converted to a time representation of the second audio file. In some embodiments, spectral subtraction is also performed to generate a further improved second audio file.

Abstract translation: 描述了有助于从音频文件中移除内容的系统和方法。 一种方法包括：识别在第一音频文件中的声音记录，识别具有至少与所述声音记录的确定的相似度水平的参考文件，以及处理所述第一音频文件以去除所述声音记录并生成第二音频文件。 在一些实施例中，采用获胜者全部编码和霍夫变换来确定第一音频文件中的参考文件的对准和速率调整。 对齐后，参考文件在频域中进行过滤，以增加参考文件和录音之间的相似性。 从FR第一音频中减去滤波版本的频域表示（FR），并将结果转换为第二音频文件的时间表示。 在一些实施例中，还执行频谱减法以产生进一步改进的第二音频文件。