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81. 发明公开

EP1133896A1 ENVIRONMENT ADAPTABLE LOUDSPEAKER 有权
标题翻译：环境适应性扬声器
公开(公告)号：EP1133896A1
公开(公告)日：2001-09-19
申请号：EP99970255.8
申请日：1999-10-06
申请人： BANG & OLUFSEN A/S
发明人： PEDERSEN, Jan, Abildgaard , PLOUG, Ole
IPC分类号： H04R3/00
CPC分类号： H04R3/002
摘要： It is known to make the performance of a loudspeaker 'environment adaptive' in controlling a filter unit based on a measurement of the velocity/acceleration of the loudspeaker diaphragm and the associated sound pressure in front of the diaphragm, by means of an accelerometer and a microphone, respectively, thereby determining the radiation resistance of the diaphragm. The two sensors have to exhibit a constant transfer function throughout the life time of the loudspeaker, which make them very expensive. With the invention it has been found that the accelerometer can be replaced by another microphone held in a small distance from the diaphragm, and this conditions the possibility of using the same microphone for both measurements, e.g. simply by physically moving the microphone from one position to another. It will then no longer be required to use long-time stable sensors, whereby the price of the sensor equipment can be reduced dramatically. Also alternative arrangements are disclosed.
摘要翻译：已知基于扬声器振动膜片的速度/加速度和膜片前面的相关声压的测量结果，通过加速度计和麦克风，从而确定光圈的辐射阻抗。两个传感器必须在扬声器的整个使用寿命期间表现出恒定的传输功能，这使得它们非常昂贵。通过本发明，已经发现加速度计可以被保持在与隔膜相距很小距离的另一个麦克风代替，并且这调节了对两个测量使用相同麦克风的可能性，例如，只需将麦克风从一个位置移动到另一个位置即可。因此不再需要使用长时间稳定的传感器，从而可以显着降低传感器设备的价格。还公开了可选的安排。

82. 发明公开

EP0935846A2 PULSE MODULATION POWER AMPLIFIER WITH ENHANCED CASCADE CONTROL METHOD 失效
标题翻译：具有改进的级联控制程序PULSMODULIERTERKEISTUNGSVERSTÄRKER
公开(公告)号：EP0935846A2
公开(公告)日：1999-08-18
申请号：EP97910272.0
申请日：1997-10-31
申请人： BANG & OLUFSEN A/S , Karsten, Nielsen
发明人： KARSTEN, Nielsen
IPC分类号： H03F1 , H03F3
CPC分类号： H03F3/217 , H03F1/083 , H03F2200/331
摘要： A digital switching power amplifier with Multivariable Enhanced Cascade Controlled (MECC) includes a modulator, a switching power stage and a low pass filter. In the first preferred embodiment an enhanced cascade control structure local to the switching power stage is added, characterised by having a single local feedback path A (7) with a lowpass characteristic and local forward blocks B1 or B (3, 4). The leads to a much improved system with a very low sensitivity to errors in the switching power stage. In the second preferred embodiment of the invention the control structure is extended with a global structure composed of a single feed-back path C (8) and forward paths blocks D1 or D (1, 2). This provides further improvements and a very low sensitivity to load variations and filter errors. Both MECC embodiments are characterised by being simple in implementation, stable and extendible by adding/removing simple local (3) or global (1) forward path blocks. A third embodiment of the invention is a controlled self-oscillating pulse modulator, characterised by first a non-hysteresis comparator as modulator and second by a higher order oscillating loop realised in both forward path B1 and feedback path A to determine stable self-oscillating conditions. An implemented 250W example MECC digital power amplifier has proven superior performance in terms of audio performance (0.005 % distortion, 115 dB dynamic range) and efficiency (92 %).

83. 发明授权

EP0046410B1 Bias control method and apparatus for magnetic recording 有权
标题翻译：用于磁记录的偏置控制方法和装置
公开(公告)号：EP0046410B1
公开(公告)日：1984-10-31
申请号：EP81303771.0
申请日：1981-08-19
申请人： BANG & OLUFSEN A/S
发明人： Jensen, Jorgen Selmer
IPC分类号： G11B5/47
CPC分类号： G11B5/03

84. 发明公开

EP4437735A1 MULTI-USER MEDIA PLAYBACK SYSTEM 审中-实审
公开(公告)号：EP4437735A1
公开(公告)日：2024-10-02
申请号：EP22818829.8
申请日：2022-11-22
申请人： Bang & Olufsen A/S
发明人： DAMSGAARD, Morten
IPC分类号： H04N21/262 , H04N21/436 , H04N21/43
CPC分类号： H04N21/26258 , H04N21/43615 , H04N21/43076

85. 发明公开

EP4404198A1 AUDITORY MEMORIES 审中-公开
公开(公告)号：EP4404198A1
公开(公告)日：2024-07-24
申请号：EP24152958.5
申请日：2024-01-19
申请人： BANG & OLUFSEN A/S
发明人： SCHEUREGGER, Oliver
IPC分类号： G10L25/54 , G06F16/68 , G10H1/00 , G10L25/63 , G10L25/30
CPC分类号： G11B27/031 , G06F3/0482 , G06F3/04847 , G06F3/0487 , G06N3/045 , G06F16/68 , G10L25/30 , G10L25/54 , G10L25/63 , G10H2240/08520130101 , G10H2220/35120130101 , G10H2250/31520130101 , G10H2250/39520130101 , G10H2250/31120130101 , G10H2240/14520130101 , G10H1/0008
摘要： Techniques for generating an auditory memory for an auditory event are described. An example technique includes obtaining a first audio content associated with an event in an environment. At least one attribute of the environment is determined, based on evaluating the first audio content. At least one emotional attribute associated with the event in the environment is determined, based on evaluating the first audio content. A second audio content is determined, based at least in part on the at least one attribute of the environment. A third audio content is determined, based at least in part on the at least one emotional attribute. An auditory memory including fourth audio content associated with the event in the environment is generated, based on the first audio content, the second audio content, and the third audio content.

86. 发明公开

EP4369740A1 ADAPTIVE SOUND IMAGE WIDTH ENHANCEMENT 审中-公开
公开(公告)号：EP4369740A1
公开(公告)日：2024-05-15
申请号：EP23208869.0
申请日：2023-11-09
申请人： BANG & OLUFSEN A/S
发明人： SCHEUREGGER, Oliver , CLARKE, Lyle Bruce
IPC分类号： H04S7/00 , H04S1/00
CPC分类号： H04S7/301 , H04S2400/1120130101 , H04S2400/1320130101 , H04S1/002
摘要： The disclosure provides an approach for adaptive sound image width enhancement. A method of adaptively correcting sound image width is provided. The method includes obtaining an audio signal. The audio signal is associated with one or more audio channels. Each audio channel is associated with a position of an audio source with respect to a reference point within a local reproduction system. The method includes decomposing the audio signal into mid signal, side signal, and unprocessed signal components. The method includes applying respective correction gains to each of the mid signal, side signal, and unprocessed signal components. The respective correction gains are based on a physical distance between a first loudspeaker and a second loudspeaker within the local reproduction system. The method includes rendering, after applying the respective correction gains, the mid signal, side signal, and unprocessed signal components to the first and second loudspeakers.

87. 发明授权

EP4075824B1 LOUDSPEAKER 有权
公开(公告)号：EP4075824B1
公开(公告)日：2024-02-28
申请号：EP21191514.5
申请日：2021-08-16
发明人： DYREBY, Jakob , RAHBEK, Jens
IPC分类号： H04R1/26

88. 发明授权

EP3716614B1 MULTIMEDIA INSTALLATION 有权转让
公开(公告)号：EP3716614B1
公开(公告)日：2022-02-09
申请号：EP19165087.8
申请日：2019-03-26
发明人： BERGSTRØM GRABÆK, Jakob
IPC分类号： H04N5/64 , H04R1/02 , F16M11/04 , F16M11/10 , F16M11/18

89. 发明授权

EP3469578B1 ADJUSTABLE ACOUSTIC LENS AND LOUDSPEAKER ASSEMBLY 有权转让
公开(公告)号：EP3469578B1
公开(公告)日：2021-04-28
申请号：EP17728768.7
申请日：2017-05-23
发明人： DYREBY, Jakob , OLSEN, Martin
IPC分类号： G10K11/28 , H04R1/34 , G10K11/35

90. 发明公开

EP3739903A2 ACTIVE ROOM COMPENSATION IN LOUDSPEAKER SYSTEM 审中-公开
公开(公告)号：EP3739903A2
公开(公告)日：2020-11-18
申请号：EP20184011.3
申请日：2015-12-16
申请人： BANG & OLUFSEN A/S
发明人： Dyreby, Jakob
IPC分类号： H04R3/04 , H04S7/00
摘要： A method for compensating for acoustic influence of a listening room on an acoustic output from an audio system including at least a left and a right loudspeaker, the method comprising determining a left frequency response and a right frequency response, designing left and right compensation filters, and during playback applying the left and right filters to left and right input signals. The method further includes determinig mono and side responses and designing mono and side compensation filters, and, during playback, applying the mono compensation filter to a mono signal based on the left and right input signals, and applying the side compensation filter to a side signal based on the left and right input signals..
The filters are thus combined to provide left and right output signals which have been left/right filtered and mono/side filtered.

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