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1.发明公开
公开(公告)号：EP1450354A1
公开(公告)日：2004-08-25
申请号：EP04003811.9
申请日：2004-02-19
IPC分类号： G10L21/02
CPC分类号： G10L21/0232 , G10L21/0208 , G10L21/0264 , G10L2021/02163 , H04R2410/07
摘要： The invention includes a method, apparatus, and computer program to selectively suppress wind noise while preserving narrow-band signals in acoustic data. Sound from one or several microphones is digitized into binary data. A time-frequency transform is applied to the data to produce a series of spectra. The spectra are analyzed to detect the presence of wind noise and narrow band signals. Wind noise is selectively suppressed while preserving the narrow band signals. The narrow band signal is interpolated through the times and frequencies when it is masked by the wind noise. A time series is then synthesized from the signal spectral estimate that can be listened to. This invention overcomes prior art limitations that require more than one microphone and an independent measurement of wind speed. Its application results in good-quality speech from data severely degraded by wind noise.
摘要翻译： 本发明包括一种在声学数据中保留窄带信号的同时有选择地抑制风噪声的方法，装置和计算机程序。 来自一个或多个麦克风的声音被数字化为二进制数据。 时间 - 频率变换被应用于数据以产生一系列光谱。 分析频谱以检测风噪声和窄带信号的存在。 选择性地抑制风噪声，同时保持窄带信号。 当窄带信号被风噪声屏蔽时，该频带信号经过时间和频率被内插。 然后从可以收听的信号谱估计中合成时间序列。 本发明克服了现有技术的限制，其需要多于一个的麦克风和独立的风速测量。 其应用导致了风噪声严重恶化的数据的高质量语音。
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2.发明公开Detection and suppression of wind noise in microphone signals 有权在Mikrofonsignalen的Erkennung undUnterdrückungvonWindgeräuschen
公开(公告)号：EP1732352A1
公开(公告)日：2006-12-13
申请号：EP05009470.5
申请日：2005-04-29
发明人： Haulick, Tim , Buck, Markus , Hetherington, Phil , Haindl, Klaus
CPC分类号： G10L21/0208 , G10L2021/02166 , H04R3/005 , H04R2410/01 , H04R2410/07 , H04R2499/13
摘要： The present invention relates to a microphone system, comprising at least one directional microphone with a first directivity to obtain a first microphone signal, at least one directional microphone with a second directivity that is worse than the first directivity, in particular, an omni-directional microphone, to obtain a second microphone signal, a detection means configured to receive the first and the second microphone signals and to output a detection signal indicating whether non-acoustic perturbations, in particular, wind noise, in the first and/or the second microphone signals exceed a predetermined level and a signal processing means configured to output an output signal generated from the first microphone signal and/or the second microphone signal on the basis of the detection signal. The invention also relates to a method reducing non-acoustic perturbations in microphone signals comprising detecting an audio signal by at least one directional microphone of a first directivity to obtain a first microphone signal, detecting the audio signal by at least one directional microphone with a second directivity that is worse than the first directivity, in particular, an omni-directional microphone, to obtain a second microphone signal, determining whether non-acoustic perturbations, in particular, wind noise, that exceed a predetermined level are present in the first and/or the second microphone signal and outputting an output signal generated from the first microphone signal and/or the second microphone signal on the basis of the result of the determining whether non-acoustic perturbations that exceed a predetermined level are present in the first and/or the second microphone signal.
摘要翻译： 麦克风系统技术领域本发明涉及一种麦克风系统，包括具有第一方向性的至少一个定向麦克风以获得第一麦克风信号，具有比第一方向性更差的第二方向性的至少一个定向麦克风，特别是全向 麦克风，以获得第二麦克风信号;检测装置，被配置为接收第一麦克风信号和第二麦克风信号，并且输出指示第一和/或第二麦克风中的非声学扰动，特别是风噪声的检测信号 信号超过预定电平，信号处理装置被配置为基于检测信号输出从第一麦克风信号和/或第二麦克风信号产生的输出信号。 本发明还涉及一种减少麦克风信号中的非声学扰动的方法，包括通过至少一个第一方向性的方向性麦克风检测音频信号以获得第一麦克风信号，通过至少一个定向麦克风检测音频信号， 比第一方向性更差的方向性，特别是全向麦克风，以获得第二麦克风信号，确定在第一和/或第二方向上是否存在超过预定水平的非声学扰动，特别是风噪声， 或第二麦克风信号，并且基于确定超过预定水平的非声学扰动的结果是否存在于第一麦克风信号和/或第二麦克风信号中的第一麦克风信号和/或第二麦克风信号中的第一和/或第二麦克风信号， 第二麦克风信号。
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公开(公告)号：EP1450354B1
公开(公告)日：2006-06-21
申请号：EP04003811.9
申请日：2004-02-19
IPC分类号： G10L21/02
CPC分类号： G10L21/0232 , G10L21/0208 , G10L21/0264 , G10L2021/02163 , H04R2410/07
摘要： The invention includes a method, apparatus, and computer program to selectively suppress wind noise while preserving narrow-band signals in acoustic data. Sound from one or several microphones is digitized into binary data. A time-frequency transform is applied to the data to produce a series of spectra. The spectra are analyzed to detect the presence of wind noise and narrow band signals. Wind noise is selectively suppressed while preserving the narrow band signals. The narrow band signal is interpolated through the times and frequencies when it is masked by the wind noise. A time series is then synthesized from the signal spectral estimate that can be listened to. This invention overcomes prior art limitations that require more than one microphone and an independent measurement of wind speed. Its application results in good-quality speech from data severely degraded by wind noise.
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公开(公告)号：EP1450353A1
公开(公告)日：2004-08-25
申请号：EP04003675.8
申请日：2004-02-18
IPC分类号： G10L21/02
CPC分类号： G10L21/0208 , G10L21/0232
摘要： A voice enhancement logic improves the perceptual quality of a processed voice. The voice enhancement system includes a noise detector and a noise attenuator. The noise detector detects a wind buffet and a continuous noise by modeling the wind buffet. The noise attenuator dampens the wind buffet to improve the intelligibility of an unvoiced, a fully voiced, or a mixed voice segment.
摘要翻译： 语音增强逻辑提高了处理语音的感知质量。 语音增强系统包括噪声检测器和噪声衰减器。 噪音检测器通过对风自助餐进行建模来检测风自助餐和持续的噪音。 噪音衰减器抑制风自助餐，以提高清音，完全声音或混合声音段的清晰度。
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公开(公告)号：EP1450353B1
公开(公告)日：2006-08-02
申请号：EP04003675.8
申请日：2004-02-18
IPC分类号： G10L21/02
CPC分类号： G10L21/0208 , G10L21/0232
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