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    • 1. 发明公开
    • A LOUDSPEAKER WITH A HELMHOLTZ RESONATOR
    • LAUTSPRECHER MIT EINEM HELMHOLTZ-RESONATOR
    • EP3028473A1
    • 2016-06-08
    • EP14747373.0
    • 2014-08-01
    • PSS Belgium NV
    • GOOSSENS, Karel
    • H04R1/28H04R31/00H04R9/02
    • H04R1/2842H04R1/2823H04R1/2846H04R1/2849H04R1/2873H04R1/288H04R3/08H04R7/127H04R9/022H04R9/027H04R9/041H04R31/00
    • The present invention relates to a loudspeaker (1). The loudspeaker (1) includes: a U-yoke for holding a magnet having a base (12) with an upstanding side (14) around the perimeter of the base (12); a frame (20) having a ring (22) around the U-yoke, the ring having a U-shaped cross-section orientated with a base (24) of the U abutting the side (12) of the U-yoke; a dome shaped diaphragm (40) connected to the frame (20) by a resilient member (30) around the dome (40), the resilient member (30) and the dome (40) being suspended from the frame (20); a first cavity (70) defined by the dome (40), resilient member (30), frame (20) and U-yoke; an external wall (80) around the circumference of the frame (20), the external wall (80) sealing a top of the U-shaped cross-section of the ring (22) forming a second cavity (100) between the external wall (80) and the ring (22); a port (110) in the frame (20) between the first cavity (70) and second cavity (100), wherein the first cavity (70) and second cavity (100) and the port (110) form a Helmholtz resonator system. The shape of the frame (20) in combination with the external wall (80) allows a Helmholtz resonator system to be established within the existing footprint of the loudspeaker.
    • 本发明涉及扬声器(1)。 扬声器(1)包括:用于保持具有围绕基部(12)的周边的具有直立侧(14)的基部(12)的磁体的U形轭; 具有围绕所述U形轭的环(22)的框架(20),所述环具有U形横截面,所述U形横截面与所述U的基部(24)定位成邻接所述U形轭的侧面(12) 通过弹性构件(30)围绕圆顶(40)连接到框架(20)的圆顶形隔膜(40),弹性构件(30)和穹顶(40)从框架(20)悬挂; 由所述圆顶(40),弹性构件(30),框架(20)和U形轭架限定的第一空腔(70) 围绕所述框架(20)的圆周的外壁(80),所述外壁(80)密封所述环(22)的U形横截面的顶部,在所述外壁(20)的外壁 (80)和所述环(22); 所述框架(20)中的位于所述第一空腔(70)和第二空腔(100)之间的端口(110),其中所述第一空腔(70)和第二空腔(100)和所述端口(110)形成亥姆霍兹共振器系统。 与外壁(80)组合的框架(20)的形状允许在扬声器的现有占地面积内建立亥姆霍兹共振器系统。
    • 5. 发明公开
    • Method of controlling sound reproduction of enclosure mounted loudspeakers
    • 一种用于控制所述壳体安装扬声器的声音的方法
    • EP2830331A1
    • 2015-01-28
    • EP14176554.5
    • 2014-07-10
    • Analog Devices A/S
    • Pan, YangZhang, FanjiongBerthelsen, Kim SpetzlerDeterman, Michael W
    • H04R29/00
    • H04R29/001H04R3/007H04R3/08
    • The present invention relates to a method of controlling sound reproduction of an enclosure mounted electrodynamic loudspeaker and a corresponding sound reproduction assembly. The method of controlling sound reproduction comprises steps of applying an audio signal to a voice coil of the electrodynamic loudspeaker through an output amplifier to produce sound, detecting one of an impedance and admittance of the loudspeaker across a predetermined audio frequency range based on a detected voice coil current and voice coil voltage and determining a fundamental resonance frequency of the loudspeaker based on the detected impedance or admittance. The determined the fundamental resonance frequency of the loudspeaker is compared with a nominal fundamental resonance frequency of the loudspeaker representing a nominal acoustic operating condition of the electrodynamic loudspeaker and a change of acoustic operating condition of the electrodynamic loudspeaker is detected based on a frequency deviation between the determined fundamental resonance frequency and a nominal fundamental resonance frequency of the electrodynamic loudspeaker. The level of the audio signal may be attenuated in response to the frequency deviation meets a predetermined frequency error criterion.
    • 本发明涉及一种控制外壳的声音再现的方法安装电动扬声器和声音再现对应的汇编。 控制声音再现的方法包括通过对输出放大器施加到音频信号提供给电动扬声器的音圈以产生声音的步骤,检测阻抗中的一个和穿过基于检测到的语音的预定的音频频率范围内的扬声器的导纳 线圈电流和音圈电压和确定性采矿基于检测到的阻抗或导纳扬声器的基本谐振频率。 确定性开采的基本谐振的扬声器的频率与代表电动扬声器的标称声操作条件和的电动扬声器的声学操作条件的改变扬声器的标称基频谐振频率相比被检测出基于所述之间的频率偏差 确定性开采基本谐振频率和所述电动扬声器的标称基频谐振频率。 所述音频信号的电平可以响应于频率偏差被衰减满足预定频率误差准则。
    • 6. 发明公开
    • Keyboard instrument
    • 键盘乐器
    • EP2571287A2
    • 2013-03-20
    • EP12184487.2
    • 2012-09-14
    • YAMAHA CORPORATION
    • Ohnishi, KentaMantani, Rokurouta
    • H04R3/08G10C3/06G10H1/08H04R7/04
    • G10C3/06G10C1/00G10C3/20G10H1/045G10H1/08G10H1/32G10H2210/271G10H2220/311H04R3/08H04R7/045
    • In a predetermined sound generation mode, a drive signal having a frequency characteristic corresponding to an operated key is supplied to excitation units (50L, 50H) provided on a soundboard (7). The soundboard (7) is vibrated in response to a mechanical vibration generated by the excitation units (50L, 50H) to generate an acoustic sound by the vibration of the soundboard (7). The frequency characteristics of the drive signal to be supplied to each of the excitation units (50L, 50H) is set in association with the vibration characteristics of the soundboard (7) at a position of a vibration member (51) of each excitation unit (50L, 50H) connected to the soundboard. For example, the frequency characteristics of the drive signal is set to characteristics capable of suppressing resonance of the soundboard (7).
    • 在预定的声音产生模式中,具有与被操作的键相对应的频率特性的驱动信号被提供给设置在共鸣板(7)上的激励单元(50L,50H)。 音板(7)响应于由激励单元(50L,50H)产生的机械振动而振动,以通过音板(7)的振动产生声音。 将要提供给每个激励单元(50L,50H)的驱动信号的频率特性与音板(7)的振动特性相关联地设置在每个激励单元(50L,50H)的振动构件 50L,50H)连接到音板。 例如,驱动信号的频率特性被设定为能够抑制共鸣板(7)的共振的特性。
    • 7. 发明公开
    • Procédé de renforcement des fréquences graves dans un signal audio numérique
    • Verfahren zurVerstärkungder tiefen常见于einem digitalen Audiosignal
    • EP2571286A1
    • 2013-03-20
    • EP12182044.3
    • 2012-08-28
    • Parrot
    • Pochon, BenoîtHoang Co Thuy, Vu
    • H04R3/04H04R3/08H04R3/00
    • H03G3/007H04R3/007H04R3/08
    • Ce procédé comprend les étapes de : a) conversion du signal audio numérique (PCM) en un signal de tension (V E ); b) premier filtrage lowshelf de gain fixe (G 2 ) ; c) calcul d'une valeur d'excursion (x) du haut-parleur ; d) comparaison de l'excursion à une valeur maximale et calcul d'un premier gain d'atténuation éventuelle (G 3 ) ; e) deuxième filtrage lowshelf de gain (G 4 + G 3 ) tenant compte du premier gain d'atténuation éventuelle ; g) comparaison avec la tension maximale (ν max ) de saturation ou d'écrêtage de l'amplificateur et calcul d'un second gain d'atténuation éventuelle (G 5 ) ; h) troisième filtrage lowshelf de gain (G 6 +G 3 + G 5 ) tenant compte des premier et/ou second gains d'atténuation éventuelle ; i) comparaison avec la tension maximale (v MAx ) de saturation ou d'écrêtage et application d'un gain d'atténuation globale éventuelle (G 7 ) ; j) compensation optionnelle des non-linéarités de réponse du haut-parleur ; et k) conversion inverse du signal (V s ) en un signal audio numérique (S) sans dimension, pour amplification ultérieure.
    • 该方法包括将输入数字音频信号(PCM)转换为电压信号(V-e)。 对电压信号应用第一滤波。 计算扬声器的偏移值(x),并将其与最大偏移值(xMAX)进行比较,以计算衰减增益(G3)。 对电压信号施加第二次滤波。 将电压信号与放大器(m)的最大饱和电压(vMAX)进行比较,以计算另一增益(G4)。 对电压信号施加第三滤波以获得反相成输出数字音频信号(S)的输出电压信号(V-s)。 第一次过滤,第二次过滤和第三次过滤是低档型过滤。
    • 9. 发明公开
    • Bass enhancing method, signal processing device, and audio reproducing system
    • Bassverstärkungsverfahren,Signalverarbeitungsvorrichtung und Audiowiedergabesystem
    • EP1971184A2
    • 2008-09-17
    • EP08250600.7
    • 2008-02-21
    • Sony Corporation
    • Ohkuri, KazunobuNakagami, TaroShimura, Masaru
    • H04R3/08
    • H04R3/04H03G5/165H04R3/08
    • If the absolute value of the current sample is greater than or equal to an envelope value at the immediately preceding sample, an envelope value at the current sample is made greater than the envelope value at the immediately preceding sample. If the absolute value of the current sample is smaller than the envelope value at the immediately preceding sample and a count value C does not reach a predetermined number N, the count value C is incremented by one and the envelope value at the current sample is held at the envelope value at the immediately preceding sample. If the absolute value of the current sample is smaller than the envelope value at the immediately preceding sample and the count value C reaches the predetermined number N, the envelope value at the current sample is made smaller than the envelope value at the immediately preceding sample.
    • 如果当前样本的绝对值大于或等于前一样本的包络值,则使当前样本的包络值大于紧接在前样本的包络值。 如果当前采样的绝对值小于紧接在前的采样的包络值,并且计数值C未达到预定数量N,则计数值C增加1,并且保持当前采样的包络值 在前一样品的包络值处。 如果当前采样的绝对值小于紧接在前的采样的包络值,并且计数值C达到预定数量N,则将当前采样的包络值设置为小于紧接在前的采样的包络值。