公开(公告)号：US09153243B2

公开(公告)日：2015-10-06

申请号：US13980892

申请日：2012-01-17

Applicant: Yoko Yoshizuka ,  Mitsuhiro Okazaki ,  Kosuke Okano

Inventor： Yoko Yoshizuka ,  Mitsuhiro Okazaki ,  Kosuke Okano

IPC: H04N5/217 ,  G10L21/0216 ,  G10L21/0232 ,  G10L25/84 ,  H04N5/232 ,  H04N5/235

CPC classification number: G10L21/0216 ,  G10L21/0232 ,  G10L25/84 ,  H04N5/217 ,  H04N5/23219 ,  H04N5/2353

Abstract: Provided are an imaging device, program, memory medium, and noise reduction method capable of appropriately reducing noise without causing degradation in a target sound such as voice. The imaging device of the present invention has: a video imaging unit for capturing video; a signal converter for converting a sound generated during video capture to a sound signal; subject determination units that predict or recognize a specific subject; a noise detector for detecting noise included in the sound generated during video capture; a noise reduction unit for reducing the noise signal from the sound signal; a voice detector for detecting non-noise signals in the sound signal; and a noise reduction performance change unit that lowers the noise signal reduction performance of the noise reduction unit when the subject determination units predict or recognize the specific subject.

Abstract translation: 提供能够适当地降低噪声而不会引起诸如声音的目标声音的劣化的成像装置，程序，存储介质和噪声降低方法。 本发明的成像装置具有：用于拍摄视频的视频成像单元; 用于将在视频捕获期间产生的声音转换成声音信号的信号转换器; 预测或识别具体科目的科目确定单位; 噪声检测器，用于检测包括在视频捕获期间产生的声音中的噪声; 噪声降低单元，用于减少来自声音信号的噪声信号; 声音检测器，用于检测声音信号中的非噪声信号; 以及噪声降低性能改变单元，当主体确定单元预测或识别特定对象时，降低噪声降低单元的噪声信号降低性能。

公开(公告)号：US20120250885A1

公开(公告)日：2012-10-04

申请号：US13435774

申请日：2012-03-30

Applicant: Yoko YOSHIZUKA ,  Mitsuhiro OKAZAKI ,  Kosuke OKANO

Inventor： Yoko YOSHIZUKA ,  Mitsuhiro OKAZAKI ,  Kosuke OKANO

IPC: H04B15/00

CPC classification number: G10L21/0232

Abstract: A signal-processing device includes a determination section that compares a frequency spectrum and a floor spectrum of an input audio signal to each other for each frequency bin and determines whether the input audio signal should be subjected to noise reduction processing or not for each of the frequency bins; and a noise reduction-processing section that subtracts a noise frequency spectrum from the frequency spectrum of the input audio signal for each of the frequency bins on the basis of the result determined by the determination section for each of the frequency bins.

Abstract translation: 一种信号处理装置，包括：确定部，其针对每个频率块将输入音频信号的频谱和底层频谱彼此进行比较，并且确定输入音频信号是否应该经受降噪处理 频率箱 以及噪声降低处理部，其基于由所述判定部针对所述频率仓确定的结果，从所述频率仓中的每一个的输入音频信号的频谱中减去噪声频谱。

公开(公告)号：US20130293747A1

公开(公告)日：2013-11-07

申请号：US13980892

申请日：2012-01-17

Applicant: Yoko Yoshizuka ,  Mitsuhiro Okazaki ,  Kosuke Okano

Inventor： Yoko Yoshizuka ,  Mitsuhiro Okazaki ,  Kosuke Okano

IPC: G10L21/0216 ,  H04N5/217

CPC classification number: G10L21/0216 ,  G10L21/0232 ,  G10L25/84 ,  H04N5/217 ,  H04N5/23219 ,  H04N5/2353

Abstract: Provided are an imaging device, program, memory medium, and noise reduction method capable of appropriately reducing noise without causing degradation in a target sound such as voice. The imaging device of the present invention has: a video imaging unit for capturing video; a signal converter for converting a sound generated during video capture to a sound signal; subject determination units that predict or recognize a specific subject; a noise detector for detecting noise included in the sound generated during video capture; a noise reduction unit for reducing the noise signal from the sound signal; a voice detector for detecting non-noise signals in the sound signal; and a noise reduction performance change unit that lowers the noise signal reduction performance of the noise reduction unit when the subject determination units predict or recognize the specific subject.

Abstract translation: 提供能够适当地降低噪声而不会引起诸如声音的目标声音的劣化的成像装置，程序，存储介质和噪声降低方法。 本发明的成像装置具有：用于拍摄视频的视频成像单元; 用于将在视频捕获期间产生的声音转换成声音信号的信号转换器; 预测或识别具体科目的科目确定单位; 噪声检测器，用于检测包括在视频捕获期间产生的声音中的噪声; 噪声降低单元，用于减少来自声音信号的噪声信号; 声音检测器，用于检测声音信号中的非噪声信号; 以及噪声降低性能改变单元，当主体确定单元预测或识别特定对象时，降低噪声降低单元的噪声信号降低性能。

公开(公告)号：US09734840B2

公开(公告)日：2017-08-15

申请号：US13435774

申请日：2012-03-30

Applicant: Yoko Yoshizuka ,  Mitsuhiro Okazaki ,  Kosuke Okano

Inventor： Yoko Yoshizuka ,  Mitsuhiro Okazaki ,  Kosuke Okano

IPC: H04B15/00 ,  G10L21/0232

CPC classification number: G10L21/0232

Abstract: A signal-processing device includes a determination section that compares a frequency spectrum and a floor spectrum of an input audio signal to each other for each frequency bin and determines whether the input audio signal should be subjected to noise reduction processing or not for each of the frequency bins; and a noise reduction-processing section that subtracts a noise frequency spectrum from the frequency spectrum of the input audio signal for each of the frequency bins on the basis of the result determined by the determination section for each of the frequency bins.