辐射分析
特性: | KLIPPEL R&D系统 |
|---|---|
| 半空间中产生的远场SPL响应 | SCN, NFS, POL, RMA, HMA |
| 方向性指数、声功率响应 | SCN, NFS, POL, HMA |
| 极坐标图和气球图 | NFS, POL |
| 同相分量 (对SPL的有益贡献) | SCN, RMA, HMA |
| 反相分量 (对SPL的有损贡献) | SCN, RMA, HMA |
| 正交分量 (对SPL无贡献) | SCN, RMA, HMA |
模组 | 备注 |
|---|---|
SCN模组通过扫描的辐射体的几何结构和机械振动来预测远场中任意一点处的声压级。该数据是计算极平面辐射特性、声功率和方向性指数的基础。数据分析可以作为后处理进行，而无需硬件部分 (只需要加密狗). | |
| 近场扫描仪 (NFS) | |
| 极平面远场测量 (POL) | |
| 高阶模态分析 (HMA) | |
| 摇摆模式分析 (RMA) |
示例:
标准
音频工程学会
AES2 Recommended practice Specification of Loudspeaker Components Used in Professional Audio and Sound Reinforcement (AES2推荐的用于专业音频和声音增强的扬声器组件的实用规范)
AES56 Standard on acoustics – Sound source modeling – Loudspeaker polar radiation measurement (AES56 声学标准 - 声源建模 - 扬声器极平面辐射的测量)
国际电工委员会
IEC 60268-5 Sound System Equipment, Part 5: Loudspeakers ( IEC 60268-5声音系统设备，第5部分: 扬声器)
W. Klippel, et al., “Distributed Mechanical Parameters of Loudspeakers Part 2: Diagnostics,” J. of Audio Eng. Soc. 57, No. 9, pp. 696-708 (2009 Sept.).
F. J. M. Frankort, “Vibration Patterns and Radiation Behavior of Loudspeaker Cones,” J. of Audio Eng. Soc., Volume 26, No. 9, pp. 609-622 (September 1978).
W. Klippel, et al., “Distributed Mechanical Parameters of Loudspeakers Part 1: Measurement,” J. of Audio Eng. Soc. 57, No. 9, pp. 500-511 (2009 Sept.).
A. J. M. Kaizer, “Theory and Numerical Calculation of the Vibration and Sound Radiation of Cone and Dome Loudspeakers with Non-Rigid Diaphragms,” presented at the 62nd Convention of the Audio Eng. Soc., March 1979, Preprint 1437.
J. Backman, “Low-frequency Polar Pattern Control for Improved In-room Response,” presented at 115th Convention of Audio Eng. Soc., October 2003, Paper no. 5867.
J. Baird, et al., “The Analysis, Interaction, and Measurement of Loudspeaker Far-Field Polar Patterns,” presented at 106th Convention of Audio Eng. Soc., May 1999, Paper no. 4949.
M. Karjalainen, et al., “Comparison of Numerical Simulation Models and Measured Low-Frequency Behavior of a Loudspeaker,” presented at the 104th Convention of the Audio Eng. Soc., May 1998, Preprint 4722.
J. Wright, “Finite Element Analysis as a Loudspeaker Design Tool,” Paper MAL-11; Conference: AES UK Conference: Microphones & Loudspeakers, The Ins & Outs of Audio (MAL); March 1998.
A. Kaizer, “Calculation of the Sound Radiation of a Nonrigid Loudspeaker Diaphragm Using the Finite-Element Method,” J. of Audio Eng. Soc., Volume 36, No. 7/8, pp. 539-551; July 1988.
