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1. 发明申请

US20110247480A1 POLYPHONIC NOTE DETECTION 有权
标题翻译：多重检测
公开(公告)号：US20110247480A1
公开(公告)日：2011-10-13
申请号：US12758675
申请日：2010-04-12
申请人： Steffen Gehring , Markus Sapp , Pierre Fournier
发明人： Steffen Gehring , Markus Sapp , Pierre Fournier
IPC分类号： G10H1/06 , G10H1/38
CPC分类号： G10H1/383 , G10H2210/066 , G10H2220/091 , G10H2250/235
摘要： Processor-implemented methods and systems for polyphonic note detection are disclosed. The method includes converting a portion of a polyphonic audio signal from a time domain to a frequency domain. The method includes detecting a fundamental frequency peak in the frequency domain. The method then detects a defined number of integer-interval harmonic partials. If a defined number of integer-interval harmonic partials relative to the fundamental frequency peak are detected the fundamental frequency is recorded as a detected note. This process is repeated for each fundamental frequency until each note in the polyphonic audio signal has been detected. For example, this method allows detection of each note in a strummed guitar chord to provide feedback on the tuning of each string in a strummed chord or allows detection and feedback of the timing and pitch errors for guitar chords played along with a reference track.
摘要翻译：公开了用于复音音符检测的处理器实现的方法和系统。该方法包括将来自时域的多音音频信号的一部分转换为频域。该方法包括检测频域中的基频峰值。该方法然后检测定义数量的整数间隔谐波分量。如果检测到相对于基频峰值的定义数量的整数间隔谐波部分，则将基频记录为检测到的音符。对于每个基本频率重复该过程，直到已经检测到复音音频信号中的每个音符。例如，该方法允许检测吉他弦中的每个音符，以提供对弦弦中的每个弦的调谐的反馈，或允许检测和反馈与参考轨道一起播放的吉他和弦的定时和俯仰误差。

2. 发明授权

US08309834B2 Polyphonic note detection 有权
标题翻译：复音笔记检测
公开(公告)号：US08309834B2
公开(公告)日：2012-11-13
申请号：US12758675
申请日：2010-04-12
申请人： Steffen Gehring , Markus Sapp , Pierre Fournier
发明人： Steffen Gehring , Markus Sapp , Pierre Fournier
IPC分类号： G10H1/38
CPC分类号： G10H1/383 , G10H2210/066 , G10H2220/091 , G10H2250/235
摘要： Processor-implemented methods and systems for polyphonic note detection are disclosed. The method includes converting a portion of a polyphonic audio signal from a time domain to a frequency domain. The method includes detecting a fundamental frequency peak in the frequency domain. The method then detects a defined number of integer-interval harmonic partials. If a defined number of integer-interval harmonic partials relative to the fundamental frequency peak are detected the fundamental frequency is recorded as a detected note. This process is repeated for each fundamental frequency until each note in the polyphonic audio signal has been detected. For example, this method allows detection of each note in a strummed guitar chord to provide feedback on the tuning of each string in a strummed chord or allows detection and feedback of the timing and pitch errors for guitar chords played along with a reference track.
摘要翻译：公开了用于复音音符检测的处理器实现的方法和系统。该方法包括将来自时域的多音音频信号的一部分转换为频域。该方法包括检测频域中的基频峰值。该方法然后检测定义数量的整数间隔谐波分量。如果检测到相对于基频峰值的定义数量的整数间隔谐波部分，则将基频记录为检测到的音符。对于每个基本频率重复该过程，直到已经检测到复音音频信号中的每个音符。例如，该方法允许检测吉他弦中的每个音符，以提供对弦弦中的每个弦的调谐的反馈，或允许检测和反馈与参考轨道一起播放的吉他和弦的定时和俯仰误差。

3. 发明授权

US08554348B2 Transient detection using a digital audio workstation 有权
标题翻译：使用数字音频工作站进行瞬态检测
公开(公告)号：US08554348B2
公开(公告)日：2013-10-08
申请号：US12505915
申请日：2009-07-20
申请人： Steffen Gehring , Thorsten Adam
发明人： Steffen Gehring , Thorsten Adam
IPC分类号： G06F17/00
CPC分类号： G10H1/0066 , G10H2210/076 , G10H2220/101 , G10L25/00
摘要： A processor implements methods, systems, and computer program products for detecting transients in an audio file. The method includes dividing the audio file into segments. Transients can be detected both in a full band signal of the audio file and one or more band-pass filtered signals of the audio file. A weight value can be assigned to each transient detected in both the full band signal and band-pass filtered signals. Transients that are below a predetermined threshold value can be eliminated. The time position of each remaining transient is determined and displayed in the audio file.
摘要翻译：处理器实现用于检测音频文件中的瞬变的方法，系统和计算机程序产品。该方法包括将音频文件划分成多个段。可以在音频文件的全频带信号和音频文件的一个或多个带通滤波信号中检测瞬态。可以将重量值分配给在全频带信号和带通滤波信号中检测到的每个瞬态信号。可以消除低于预定阈值的瞬变。每个剩余瞬态的时间位置被确定并显示在音频文件中。

4. 发明申请

US20110175915A1 VISUALLY-ASSISTED MIXING OF AUDIO USING A SPECTRAL ANALYZER 有权
标题翻译：使用光谱分析仪的视觉辅助音频混合
公开(公告)号：US20110175915A1
公开(公告)日：2011-07-21
申请号：US12688717
申请日：2010-01-15
申请人： Steffen Gehring
发明人： Steffen Gehring
IPC分类号： H04B1/00 , G06T11/20 , G06F17/00 , G06F3/01
CPC分类号： G10H7/008 , H03G5/005 , H03G5/165 , H04S7/00
摘要： Processor-implemented methods and systems for visually-assisted mixing of audio using a spectral analyzer are disclosed. The system calculates and displays a spectral view for each track in an arrangement in a multi-track view. A user can then request modification of the spectral view. In response to this request for modification, the system automatically adjusts associated mixing parameters for the modified track so that the spectral output of the track substantially matches the user-requested modified spectral view. This allows a user to visually mix an arrangement by imputing a desired spectral result and having the program make the changes necessary to achieve it.
摘要翻译：公开了使用光谱分析仪来视觉辅助混合音频的处理器实现的方法和系统。系统在多轨视图中以排列方式计算和显示每个轨道的光谱视图。然后用户可以请求修改光谱视图。响应于该修改请求，系统自动调整修改的轨道的相关联的混合参数，使得轨道的频谱输出基本上与用户请求的修改的频谱视图相匹配。这允许用户通过估算所需的频谱结果并使程序进行必要的改变来实现它，从而可视地混合排列。

5. 发明申请

US20110015766A1 TRANSIENT DETECTION USING A DIGITAL AUDIO WORKSTATION 有权
标题翻译：使用数字音频工作站进行瞬态检测
公开(公告)号：US20110015766A1
公开(公告)日：2011-01-20
申请号：US12505915
申请日：2009-07-20
申请人： Steffen Gehring , Thorsten Adam
发明人： Steffen Gehring , Thorsten Adam
IPC分类号： G06F17/00
CPC分类号： G10H1/0066 , G10H2210/076 , G10H2220/101 , G10L25/00
摘要： A processor implements methods, systems, and computer program products for detecting transients in an audio file. The method includes dividing the audio file into segments. Transients can be detected both in a full band signal of the audio file and one or more band-pass filtered signals of the audio file. A weight value can be assigned to each transient detected in both the full band signal and band-pass filtered signals. Transients that are below a predetermined threshold value can be eliminated. The time position of each remaining transient is determined and displayed in the audio file.
摘要翻译：处理器实现用于检测音频文件中的瞬变的方法，系统和计算机程序产品。该方法包括将音频文件划分成多个段。可以在音频文件的全频带信号和音频文件的一个或多个带通滤波信号中检测瞬态。可以将重量值分配给在全频带信号和带通滤波信号中检测到的每个瞬态信号。可以消除低于预定阈值的瞬变。每个剩余瞬态的时间位置被确定并显示在音频文件中。

6. 发明申请

US20110307084A1 DETECTING IF AN AUDIO STREAM IS MONOPHONIC OR POLYPHONIC 有权
标题翻译：检测如果音频流是单声道或多声道的
公开(公告)号：US20110307084A1
公开(公告)日：2011-12-15
申请号：US12814867
申请日：2010-06-14
申请人： Steffen Gehring , Christof Adam
发明人： Steffen Gehring , Christof Adam
IPC分类号： G06F17/00
CPC分类号： G10H3/125 , G10H2210/056 , G10H2210/066 , G10H2250/031
摘要： The disclosed technology provides for determining whether an audio stream is monophonic or polyphonic. An exemplary method includes analyzing and detecting frequency peaks in a portion of the audio stream. The method includes determining whether the portion of the audio stream is monophonic, by determining if all detected peaks are integer intervals of a lowest detected frequency peak. The method then includes determining that the audio stream portion is monophonic if a greatest common devisor frequency exists between a threshold frequency and the lowest detected frequency peak, wherein each detected peak is an integer multiple of the greatest common devisor frequency. The method includes determining that the portion of the audio stream is polyphonic if any one of the detected peaks is not substantially an integer multiple of the lowest detected frequency and if no greatest common devisor frequency exists between the threshold frequency and the lowest detected frequency peak.
摘要翻译：所公开的技术提供了确定音频流是单音还是多音。示例性方法包括分析和检测音频流的一部分中的频率峰值。该方法包括通过确定所有检测到的峰值是否是最低检测频率峰值的整数间隔来确定该音频流的部分是单声道的。该方法然后包括如果在阈值频率和最低检测到的频率峰值之间存在最大的公共管理器频率，则确定音频流部分是单声道的，其中每个检测到的峰值是最大公共设备频率的整数倍。该方法包括：如果检测到的峰值中的任何一个基本上不是最低检测频率的整数倍，并且如果在阈值频率和最低检测频率峰值之间没有最大的公共设备频率，则确定该音频流的该部分是多音调的。

7. 发明授权

US08699727B2 Visually-assisted mixing of audio using a spectral analyzer 有权
标题翻译：使用光谱分析仪进行视觉辅助混合音频
公开(公告)号：US08699727B2
公开(公告)日：2014-04-15
申请号：US12688717
申请日：2010-01-15
申请人： Steffen Gehring
发明人： Steffen Gehring
IPC分类号： H04B1/00 , H03G5/00 , H03G5/02 , G10H1/08
CPC分类号： G10H7/008 , H03G5/005 , H03G5/165 , H04S7/00
摘要： Processor-implemented methods and systems for visually-assisted mixing of audio using a spectral analyzer are disclosed. The system calculates and displays a spectral view for each track in an arrangement in a multi-track view. A user can then request modification of the spectral view. In response to this request for modification, the system automatically adjusts associated mixing parameters for the modified track so that the spectral output of the track substantially matches the user-requested modified spectral view. This allows a user to visually mix an arrangement by imputing a desired spectral result and having the program make the changes necessary to achieve it.
摘要翻译：公开了使用光谱分析仪来视觉辅助混合音频的处理器实现的方法和系统。系统在多轨视图中以排列方式计算和显示每个轨道的光谱视图。然后用户可以请求修改光谱视图。响应于该修改请求，系统自动调整修改的轨道的相关联的混合参数，使得轨道的频谱输出基本上与用户请求的修改的频谱视图相匹配。这允许用户通过估算所需的频谱结果并使程序进行必要的改变来实现它，从而可视地混合排列。

8. 发明授权

US08392006B2 Detecting if an audio stream is monophonic or polyphonic 有权
标题翻译：检测音频流是单声道还是多音
公开(公告)号：US08392006B2
公开(公告)日：2013-03-05
申请号：US12814867
申请日：2010-06-14
申请人： Steffen Gehring , Christof Adam
发明人： Steffen Gehring , Christof Adam
IPC分类号： G06F17/00
CPC分类号： G10H3/125 , G10H2210/056 , G10H2210/066 , G10H2250/031
摘要： The disclosed technology provides for determining whether an audio stream is monophonic or polyphonic. An exemplary method includes analyzing and detecting frequency peaks in a portion of the audio stream. The method includes determining whether the portion of the audio stream is monophonic, by determining if all detected peaks are integer intervals of a lowest detected frequency peak. The method then includes determining that the audio stream portion is monophonic if a greatest common devisor frequency exists between a threshold frequency and the lowest detected frequency peak, wherein each detected peak is an integer multiple of the greatest common devisor frequency. The method includes determining that the portion of the audio stream is polyphonic if any one of the detected peaks is not substantially an integer multiple of the lowest detected frequency and if no greatest common devisor frequency exists between the threshold frequency and the lowest detected frequency peak.
摘要翻译：所公开的技术提供了确定音频流是单音还是多音。示例性方法包括分析和检测音频流的一部分中的频率峰值。该方法包括通过确定所有检测到的峰值是否是最低检测频率峰值的整数间隔来确定该音频流的部分是单声道的。该方法然后包括如果在阈值频率和最低检测到的频率峰值之间存在最大的公共管理器频率，则确定音频流部分是单声道的，其中每个检测到的峰值是最大公共设备频率的整数倍。该方法包括：如果检测到的峰值中的任何一个基本上不是最低检测频率的整数倍，并且如果在阈值频率和最低检测频率峰值之间没有最大的公共设备频率，则确定该音频流的该部分是多音调的。

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