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1. 发明授权

EP2093753B1 Sound signal processing apparatus and method 有权
标题翻译：一种音频信号处理和程序
公开(公告)号：EP2093753B1
公开(公告)日：2016-04-13
申请号：EP09152985.9
申请日：2009-02-17
申请人： Yamaha Corporation
发明人： Ong, Bee Suan , Streich, Sebastian , Fujishima, Takuya , Arimoto, Keita
IPC分类号： G10H1/00
CPC分类号： G10H1/0008 , G10H2210/056 , G10H2210/066 , G10H2250/135

2. 发明公开

EP1947638A1 INFORMATION PROCESSING DEVICE AND METHOD, AND PROGRAM 有权
标题翻译：信息来源于无限制，-verfahren und -programm
公开(公告)号：EP1947638A1
公开(公告)日：2008-07-23
申请号：EP06823177.8
申请日：2006-11-08
申请人： Sony Corporation
发明人： KOBAYASHI, Yoshiyuki
IPC分类号： G10G3/04 , G10L11/00
CPC分类号： G10H1/0008 , G10H2210/051 , G10H2210/061 , G10H2210/066 , G10H2250/135 , G10H2250/235 , G10L25/48
摘要： The present invention relates to an information processing apparatus, method, and program that are capable of analyzing a waveform of a tune involving a modulation with a reduced operation amount. A beat feature extraction section 41 extracts a feature related to a beat from sections of a waveform of a tune involving a modulation, each of the sections corresponding to each beat. A beat feature removal section 42 removes a phase component from a frequency component of each feature extracted. An autocorrelation map generation section 43 generates, based on the features whose phase components have been removed, autocorrelation information representing correlation between one section and another section. This enables the waveform of the tune involving a modulation to be analyzed with a reduced operation amount. The present invention is applicable to an information processing apparatus.
摘要翻译：本发明涉及一种信息处理装置，方法和程序，其能够分析涉及具有减少的操作量的调制的乐曲的波形。拍子特征提取部分41从涉及调制的乐曲的波形的部分中提取与拍子相关的特征，每个部分对应于每个节拍。节拍特征去除部分42从提取的每个特征的频率分量中去除相位分量。自相关图生成部43基于相位分量被去除的特征，生成表示一部分与另一部分之间的相关性的自相关信息。这使得能够以减少的操作量来分析涉及调制的调谐波形。本发明可应用于信息处理设备。

3. 发明公开

EP1550297A1 FINGERPRINT EXTRACTION 有权
标题翻译：指纹提取
公开(公告)号：EP1550297A1
公开(公告)日：2005-07-06
申请号：EP03798257.6
申请日：2003-08-11
申请人： Koninklijke Philips Electronics N.V.
发明人： HAITSMA, Jaap, A.
IPC分类号： H04N1/32
CPC分类号： G10H1/0058 , G10H2250/135 , G10H2250/161 , G10H2250/235 , G10L19/018 , H04N1/32122 , H04N2201/3235 , H04N2201/3236 , H04N2201/3274
摘要： Fingerprints are bit strings extracted from a media signal (e.g. an audio or video clip) to identify said media signal. Typically, they are derived from a perceptual property of the signal, for example, the spectral energy distribution of an audio fragment or the luminance distribution of a video image. A method and arrangement for extracting a fingerprint is here disclosed which is robust with respect to shifts of the perceptual property. Such shifts occur, inter alia, when the fingerprint is derived from a logarithmically mapped spectral energy distribution of an audio signal and said audio signal is subjected to speed changes. According to the invention, the fingerprint is not derived from the perceptual property as such, but from its auto-correlation function.

4. 发明授权

EP2816550B1 Audio signal analysis 有权
公开(公告)号：EP2816550B1
公开(公告)日：2018-07-25
申请号：EP14172049.0
申请日：2014-06-12
申请人： Nokia Technologies Oy
发明人： Eronen, Antti , Leppänen, Jussi , Curcio, Igor
IPC分类号： G10H1/40
CPC分类号： G10H1/00 , G10H1/40 , G10H2210/061 , G10H2210/071 , G10H2210/076 , G10H2210/341 , G10H2240/251 , G10H2250/135
摘要： Apparatus for audio processing comprises: a beat tracking module for identifying beat time instants in an audio signal and a downbeat identifier for identifying downbeats occurring at beat time instants, each downbeat corresponding to the start of a musical bar or measure. A pattern identifier identifies two or more adjacent bars or measures containing musical characteristics which repeat within the audio signal, the pattern identifier being configured to: generate for each downbeat a plurality of scores using respective analysis methods for indicating different characteristics within the audio signal at the downbeat; combine the scores for each downbeat; and identify based on the combined scores non-adjacent downbeats that correspond to the start of a musical pattern.

5. 发明授权

EP1774527B1 VORRICHTUNG UND VERFAHREN ZUM BEZEICHNEN VON VERSCHIEDENEN SEGMENTKLASSEN 有权
标题翻译： DEVICE AND METHOD FOR指示。通过不同的段CLASSES
公开(公告)号：EP1774527B1
公开(公告)日：2008-01-02
申请号：EP05760560.2
申请日：2005-07-15
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： VAN PINXTEREN, Markus , SAUPE, Michael , CREMER, Markus
IPC分类号： G11B27/28 , G11B27/031 , G06F17/30 , G10L11/02 , G10H1/00
CPC分类号： G11B27/28 , G06F17/30743 , G10H1/00 , G10H2210/061 , G10H2250/135
摘要： For labeling different segment classes, a segment class labeling device uses the temporal position of segments in two-candidate segment classes for the selection of stanza/chorus. The segment class of the highest order is only labeled as the chorus segment class (41) if it includes a segment that occurs at a later time in the audio piece than the latest segment of the other candidate segment class (40). The invention allows for a segment class labeling with a low error rate which can at the same time be easily implemented and is predestined for an automated procedure.

6. 发明授权

EP1388145B1 VORRICHTUNG UND VERFAHREN ZUM ANALYSIEREN EINES AUDIOSIGNALS HINSICHTLICH VON RHYTHMUSINFORMATIONEN 有权
标题翻译：设备和方法分析的音频信号相对于节律的信息的
公开(公告)号：EP1388145B1
公开(公告)日：2004-10-13
申请号：EP02745267.1
申请日：2002-04-25
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： HERRE, Jürgen , ROHDEN, Jan , UHLE, Christian , CREMER, Markus
IPC分类号： G10L11/00
CPC分类号： G10L25/90 , G10H1/40 , G10H2210/076 , G10H2250/135
摘要： The invention relates to a device for analysing an audio signal in view of obtaining rhythm information of said audio signal. Said device comprises a filter bank for decomposing (102) the audio signal into at least two partial band signals. Each partial band signal is analysed (106a, 106b) in terms of its periodicity, in order to obtain raw rhythm information for each partial band signal. Raw rhythm information is subjected to a quality evaluation (110a, 110b), in order to obtain a significance measure for each partial band signal. The rhythm information of the audio signal is determined, taking into account the significance measure of the partial band signal and the raw rhythm information (114). This enables a more robust analysis of the audio signal, as partial band signals containing clear rhythm information are preferred to partial band signals containing less clear rhythm information, for the determination of rhythm information.

7. 发明公开

EP1374219A2 SYNCHRONIZING TEXT/VISUAL INFORMATION WITH AUDIO PLAYBACK 审中-公开
标题翻译： SYNCHRONIZING TEXT /具有语音播放视觉信息
公开(公告)号：EP1374219A2
公开(公告)日：2004-01-02
申请号：EP02708580.2
申请日：2002-03-22
申请人： Koninklijke Philips Electronics N.V.
发明人： LI, Dongge , TROVATO, Karen , RAMASWAMY, Muralidharan
IPC分类号： G10H1/36 , H04N7/52 , G10L11/02
CPC分类号： H04N7/163 , G10H1/368 , G10H2210/041 , G10H2220/011 , G10H2240/325 , G10H2250/135 , G10H2250/235 , G10L25/48 , H04N21/2368 , H04N21/4126 , H04N21/41407 , H04N21/4307 , H04N21/4341 , H04N21/4394 , H04N21/44
摘要： A method of synchronizing visual information with audio playback includes the steps of selecting a desired audio file from a list stored in memory associated with a display device, sending a signal from the display device to a remote device to cause the remote device to start playing the desired audio file; and displaying visual information associated with the desired audio file on the display device in accordance with timestamp data such that the visual information is displayed synchronously with the playing of the desired audio file, wherein the commencement of playing the desired audio file and the commencement of the displaying step are a function of the signal from the display device.

8. 发明公开

EP1371055A2 VORRICHTUNG ZUM ANALYSIEREN EINES AUDIOSIGNALS HINSICHTLICH VON RHYTHMUSINFORMATIONEN DES AUDIOSIGNALS UNTER VERWENDUNG EINER AUTOKORRELATIONSFUNKTION 有权
标题翻译：设备技术分析的音频信号相对于音频信号的节律的信息使用的一个自相关函数
公开(公告)号：EP1371055A2
公开(公告)日：2003-12-17
申请号：EP02742987.7
申请日：2002-05-10
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DERANGEWANDTEN FORSCHUNG E.V.
发明人： HERRE, Jürgen , ROHDEN, Jan , UHLE, Christian , CREMER, Markus
IPC分类号： G10H1/40
CPC分类号： G10L19/0208 , G10H1/40 , G10H2210/076 , G10H2250/135 , G10L25/06 , G10L25/90
摘要： A device for the analysis of an audio signal with regard to the rhythm information in the audio signal using an auto-correlation function, comprises a filter bank for splitting the audio signal into at least two partial-band signals. The partial band signals are analysed for periodicity by means of an auto-correlation function (106a), in order to obtain raw rhythm information for the at least two partial-band signals. The raw rhythm information is processed (121), to give processed raw rhythm information for the partial-band signal, in order to reduce or eliminate the ambiguity of the auto-correlation function for periodic signals. The rhythm information for the audio signal is determined (122) on the basis of the processed rhythm raw information. Auto-correlation function ambiguity is eliminated at the point of appearance, or rhythm components at double beat, not normally produced by an auto-correlation function processing are added by means of the auto-correlation function processing of partial bands, such that a more robust determination of the rhythm information in the audio signal results.

9. 发明公开

EP1027697A1 PITCH DETECTION AND INTONATION CORRECTION APPARATUS AND METHOD 有权
标题翻译：方法和设备，用来确定音准间距的修正
公开(公告)号：EP1027697A1
公开(公告)日：2000-08-16
申请号：EP98953779.0
申请日：1998-10-20
申请人： Auburn Audio Technologies, Inc.
发明人： HILDEBRAND, Harold, A.
IPC分类号： G10D3/14 , G10H1/02 , G10H1/44
CPC分类号： G10H3/125 , G10H1/02 , G10H1/366 , G10H1/44 , G10H7/002 , G10H2210/066 , G10H2210/211 , G10H2210/331 , G10H2240/311 , G10H2250/135 , G10H2250/621 , G10H2250/631
摘要： A device and method is disclosed to correct intonation errors and generate vibrato in solo instruments and vocal performances in real time. The device (100) determines the pitch of a musical note produced by voice or instrument and shifts the pitch of that note to produce a very high quality and fidelity output. The device (100) includes a pitch detector that automatically recognizes the pitch of musical notes quickly. The detected pitch is then used as an input to a pitch corrector that converts the pitch of the input to an output with a desired pitch. The corrected musical note is then in tune with the pitch standard. The device and method employ a microprocessor (4) that samples the signal from a musical instrument or voice at regular intervals using an analog-to-digital converter (3) and then utilizes data derived from an auto-correlation function of the waveform to continuously determine the period of the waveform. The period of the waveform is then compared to a desired period or periods (such as found in a scale). The ratio of the waveform period and the desired period is computed to re-sample the waveform. This ratio is smoothed over time to remove instantaneous output pitch changes. The ratio is used to re-sample the input waveform. The resulting output waveform is processed through a digital-to-analog converter (10) and output through audio interfaces (12).

10. 发明授权

EP1947638B1 Information Processing Device and Method, and Program 有权
标题翻译：信息处理设备，程序和程序
公开(公告)号：EP1947638B1
公开(公告)日：2014-04-16
申请号：EP06823177.8
申请日：2006-11-08
申请人： Sony Corporation
发明人： KOBAYASHI, Yoshiyuki
IPC分类号： G10H1/00 , G10G3/04
CPC分类号： G10H1/0008 , G10H2210/051 , G10H2210/061 , G10H2210/066 , G10H2250/135 , G10H2250/235 , G10L25/48

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