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1. 发明公开

EP3121608A2 METHOD OF MODELING CHARACTERISTICS OF A NON LINEAR SYSTEM 有权
标题翻译：非线性系统的特征建模方法
公开(公告)号：EP3121608A2
公开(公告)日：2017-01-25
申请号：EP16176571.4
申请日：2016-06-28
申请人： Positive Grid LLC
发明人： WANG, Tien-Ming , YEH, Yi-Fan , SIAO, Yi-Song
IPC分类号： G01R23/20
CPC分类号： G06F17/5009 , G01R23/20 , G01R31/28 , G01R31/2837 , G06F17/11 , G10H1/06 , G10H1/16 , G10H5/00 , G10H5/002 , G10H5/007 , G10H7/00 , G10H2210/031 , G10H2250/00 , G10H2250/471 , G10H2250/511
摘要： A method of modeling (fig. 4, fig. 5) a characteristic of a non-linear system (21), comprises feeding test input signals (Sig6, Sig7) into the non-linear system (21) to obtain test output signals (Resp6, Resp7), wherein the test input signals (Sig6, Sig7) include a first test input signal (Sig6) and the test output signals (Resp6, Resp7) include a first test output signal (Resp6), identifying occurrences when an output level in at least one specific frequency band of the first testing output signal significantly changes under the first test input signal (e.g. identifying the frequencies at which there are overtones) so as to obtain a first profile (Profile B: frequency index versus input level, fig. 7), and modeling the characteristic (e.g. frequency response of pre-amplifier stage, fig. 8) based on the first profile (fig. 20).
Various test input signals may be used : Amplitude sweep (fig. 6a-c), frequency sweep (fig. 10), white noise or chirp signal. The breakup point of overtones onsets in the table of frequency bins versus input signal is determined.
The application of this profile to model the non-linear amplifier stage of a music instrument, for instance a guitar, is also defined.
摘要翻译：一种对非线性系统（21）的特性进行建模（图4，图5）的方法包括将测试输入信号（Sig6，Sig7）馈送到非线性系统（21）中以获得测试输出信号（（Sig6，Sig7）包括第一测试输入信号（Sig6），并且测试输出信号（Resp6，Resp7）包括第一测试输出信号（Resp6），该第一测试输出信号（Resp6，Resp7）在第一测试输出信号的至少一个特定频带中在第一测试输入信号（例如，识别存在泛音的频率）下显着改变以获得第一简档（简档B：频率索引对输入电平，无花果基于第一轮廓（图20）对特性（例如，前置放大器级的频率响应，图8）进行建模。可以使用各种测试输入信号：幅度扫描（图6a-c），频率扫描（图10），白噪声或啁啾信号。确定频率表中的泛音起始点与输入信号的分离点。还定义了该曲线的应用来模拟乐器的非线性放大器级，例如吉他。

2. 发明公开

EP3121808A3 SYSTEM AND METHOD OF MODELING CHARACTERISTICS OF A MUSICAL INSTRUMENT 有权
标题翻译：一种乐器特性的建模系统和方法
公开(公告)号：EP3121808A3
公开(公告)日：2017-02-22
申请号：EP16176561.5
申请日：2016-06-28
申请人： Positive Grid LLC
发明人： WANG, Tien-Ming , YEH, Yi-Fan , SIAO, Yi-Song
IPC分类号： G10H5/00 , G10H1/00 , H04R3/00
摘要： A system (50) for modifying an audio signal (Audo1) comprises a portable device (50) including at least one digital signal processor DSP.
The DSP comprises a first module (503) and a second module (504). The first module (503) is coupled to the interface (501) to provide a reference electric musical instrument (502) with a set of input test signals (Sig9) and obtain a set of test output signals (Resp9) via the interface (501). The second module (504) is configured to perform functions including:
Analysing the set of test output signals (Resp9) to obtain a set of parameters (Prm1);
parameterizing an acoustic transducer (505) and a modeler (30) to model characteristics of the reference electric musical instrument (502) based on the set of parameters (Prm1);
Receiving the audio signal (Audo1) from a played musical instrument (63 / 502) to modify it into a second audio signal (Audo2) using the modeler (30) and the acoustic transducer (505),
wherein the first module obtains the set of parameters (Prm1) at least by identifying frequency bins where overtones occur in the test output signals (Resp9). The set of parameters comprises two profiles (Profile A, Profile B), gain characteristics, breakup value, pre-/post-amplifiers characteristics, measured beforehand via the interface, stored and made available in the cloud.
Another embodiment provides a system (60) comprising a first host (61) and a second host (62). The first host measures a reference electric musical instrument (502) via a first and second modules (503, 504) and sends the obtained set of parameters (Prm1) of a corresponding physical model over the cloud; the second host (62) retrieves the set of parameters (Prm1) from the cloud and modifies via a third module (620) the audio (Sig10) input from an actual music instrument (63) in real time, to produce an output signal (Resp10) having a similar timbre as the reference electric music instrument (502).
摘要翻译：用于修改音频信号（Audo1）的系统（50）包括包括至少一个数字信号处理器DSP的便携式设备（50）。 DSP包括第一模块（503）和第二模块（504）。第一模块（503）耦合到接口（501）以向参考电乐器（502）提供一组输入测试信号（Sig9）并且经由接口（501）获得一组测试输出信号（Resp9））。第二模块（504）被配置为执行功能，包括：分析该组测试输出信号（Resp9）以获得一组参数（Prm1）; 参数化声学换能器（505）和建模器（30）以基于该组参数（Prm1）对参考电动乐器（502）的特性进行建模; 使用建模器（30）和声换能器（505）从已播放的乐器（63/502）接收音频信号（Audo1）以将其修改为第二音频信号（Audo2），其中第一模块获得参数（Prm1），至少通过识别测试输出信号（Resp9）中出现泛音的频率点。这组参数包括两个配置文件（配置文件A，配置文件B），增益特性，分解值，事先通过接口测量的前置/后置放大器特性，存储并在云中提供。另一个实施例提供了一种包括第一主机（61）和第二主机（62）的系统（60）。第一主机经由第一模块和第二模块（503,504）测量参考电子乐器（502），并且将获得的相应物理模型的一组参数（Prm1）发送到云上; 第二主机62从云中检索该组参数（Prm1）并且经由第三模块（620）实时修改从实际乐器（63）输入的音频（Sig10），以产生输出信号（ Resp10）具有与参考电子乐器（502）类似的音色。

3. 发明公开

EP3121808A2 SYSTEM AND METHOD OF MODELING CHARACTERISTICS OF A MUSICAL INSTRUMENT 有权
标题翻译：系统VERFAHREN ZUR MODELLIERUNG VON EIGENSCHAFTEN EINES MUSIKINSTRUMENTS
公开(公告)号：EP3121808A2
公开(公告)日：2017-01-25
申请号：EP16176561.5
申请日：2016-06-28
申请人： Positive Grid LLC
发明人： WANG, Tien-Ming , YEH, Yi-Fan , SIAO, Yi-Song
IPC分类号： G10H5/00 , G10H1/00 , H04R3/00
摘要： A system (50) for modifying an audio signal (Audo1) comprises a portable device (50) including at least one digital signal processor DSP.
The DSP comprises a first module (503) and a second module (504). The first module (503) is coupled to the interface (501) to provide a reference electric musical instrument (502) with a set of input test signals (Sig9) and obtain a set of test output signals (Resp9) via the interface (501). The second module (504) is configured to perform functions including:
Analysing the set of test output signals (Resp9) to obtain a set of parameters (Prm1);
parameterizing an acoustic transducer (505) and a modeler (30) to model characteristics of the reference electric musical instrument (502) based on the set of parameters (Prm1);
Receiving the audio signal (Audo1) from a played musical instrument (63 / 502) to modify it into a second audio signal (Audo2) using the modeler (30) and the acoustic transducer (505),
wherein the first module obtains the set of parameters (Prm1) at least by identifying frequency bins where overtones occur in the test output signals (Resp9). The set of parameters comprises two profiles (Profile A, Profile B), gain characteristics, breakup value, pre-/post-amplifiers characteristics, measured beforehand via the interface, stored and made available in the cloud.
Another embodiment provides a system (60) comprising a first host (61) and a second host (62). The first host measures a reference electric musical instrument (502) via a first and second modules (503, 504) and sends the obtained set of parameters (Prm1) of a corresponding physical model over the cloud; the second host (62) retrieves the set of parameters (Prm1) from the cloud and modifies via a third module (620) the audio (Sig10) input from an actual music instrument (63) in real time, to produce an output signal (Resp10) having a similar timbre as the reference electric music instrument (502).
摘要翻译：用于修改音频信号（Audo1）的系统（50）包括包括至少一个数字信号处理器DSP的便携式设备（50）。 DSP包括第一模块（503）和第二模块（504）。第一模块（503）耦合到接口（501），以提供具有一组输入测试信号（Sig9）的参考电乐器（502），并且经由接口（501）获得一组测试输出信号（Resp9））。第二模块（504）被配置为执行功能，包括：分析所述一组测试输出信号（Resp9）以获得一组参数（Prm1）; 参数化声学换能器（505）和建模器（30），以基于所述参数集合（Prm1）对所述参考电乐器（502）的特征进行建模; 从演奏的乐器（63/502）接收音频信号（Audo1），使用建模器（30）和声换能器（505）将其修改成第二音频信号（Audo2），其中第一模块获得至少通过识别在测试输出信号（Resp9）中发生泛音的频率箱的参数（Prm1）。该组参数包括两个通过界面预先测量的，在云中存储和使用的配置文件（配置文件A，配置文件B），增益特性，分解值，放大前/后置放大器特性。另一实施例提供一种包括第一主机（61）和第二主机（62）的系统（60）。第一主机经由第一和第二模块（503,504）测量参考电乐器（502），并将所获得的相应物理模型参数集（Prm1）发送到云上; 第二主机（62）从云取出一组参数（Prm1），并通过第三模块（620）实时地从实际乐器（63）输入的音频（Sig10）进行修改，以产生输出信号 Resp10）具有与参考电子乐器（502）相似的音色。

4. 发明授权

EP3121808B1 SYSTEM FOR MODELING CHARACTERISTICS OF AN ELECTRONIC MUSICAL INSTRUMENT 有权
公开(公告)号：EP3121808B1
公开(公告)日：2019-12-18
申请号：EP16176561.5
申请日：2016-06-28
申请人： Positive Grid LLC
发明人： WANG, Tien-Ming , YEH, Yi-Fan , SIAO, Yi-Song
IPC分类号： G10H1/06 , G10H5/00 , G10H3/18 , G10H1/00 , G10H7/00 , G01R23/20 , G10H1/16

5. 发明授权

EP3121608B1 METHOD OF MODELING CHARACTERISTICS OF A NON LINEAR SYSTEM. 有权
公开(公告)号：EP3121608B1
公开(公告)日：2019-05-01
申请号：EP16176571.4
申请日：2016-06-28
申请人： Positive Grid LLC
发明人： WANG, Tien-Ming , YEH, Yi-Fan , SIAO, Yi-Song
IPC分类号： G01R23/20 , G01R31/28 , G10H1/16 , G10H5/00 , G10H1/00 , G10H7/00

6. 发明公开

EP3121608A3 METHOD OF MODELING CHARACTERISTICS OF A NON LINEAR SYSTEM. 有权
标题翻译： VERFAHREN ZUR MODELLIERUNG VON EIGENSCHAFTEN EINES NICH-LINEARES SYSTEMS。
公开(公告)号：EP3121608A3
公开(公告)日：2017-03-01
申请号：EP16176571.4
申请日：2016-06-28
申请人： Positive Grid LLC
发明人： WANG, Tien-Ming , YEH, Yi-Fan , SIAO, Yi-Song
IPC分类号： G01R23/20
CPC分类号： G06F17/5009 , G01R23/20 , G01R31/28 , G01R31/2837 , G06F17/11 , G10H1/06 , G10H1/16 , G10H5/00 , G10H5/002 , G10H5/007 , G10H7/00 , G10H2210/031 , G10H2250/00 , G10H2250/471 , G10H2250/511
摘要： A method of modeling (fig. 4, fig. 5) a characteristic of a non-linear system (21), comprises feeding test input signals (Sig6, Sig7) into the non-linear system (21) to obtain test output signals (Resp6, Resp7), wherein the test input signals (Sig6, Sig7) include a first test input signal (Sig6) and the test output signals (Resp6, Resp7) include a first test output signal (Resp6), identifying occurrences when an output level in at least one specific frequency band of the first testing output signal significantly changes under the first test input signal (e.g. identifying the frequencies at which there are overtones) so as to obtain a first profile (Profile B: frequency index versus input level, fig. 7), and modeling the characteristic (e.g. frequency response of pre-amplifier stage, fig. 8) based on the first profile (fig. 20).
Various test input signals may be used : Amplitude sweep (fig. 6a-c), frequency sweep (fig. 10), white noise or chirp signal. The breakup point of overtones onsets in the table of frequency bins versus input signal is determined.
The application of this profile to model the non-linear amplifier stage of a music instrument, for instance a guitar, is also defined.
摘要翻译：一种建模方法（图4，图5）是非线性系统（21）的特征，包括将测试输入信号（Sig6，Sig7）馈送到非线性系统（21）中以获得测试输出信号 Resp6，Resp7），其中测试输入信号（Sig6，Sig7）包括第一测试输入信号（Sig6），并且测试输出信号（Resp6，Resp7）包括第一测试输出信号（Resp6），当输出电平在第一测试输出信号的至少一个特定频带在第一测试输入信号（例如，识别出有泛音的频率）下显着变化，以便获得第一曲线（曲线B：频率指数与输入电平，图 7），并且基于第一轮廓（图20）对特性（例如，前置放大器级的频率响应，图8）建模。可以使用各种测试输入信号：幅度扫描（图6a-c），频率扫描（图10），白噪声或啁啾信号。确定频率表与输入信号表中的泛音上断点。还定义了该配置文件对乐器（例如吉他）的非线性放大器级的建模的应用。

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