J Acoust Soc Am. 2012 Jan;131(1):829-36. doi: 10.1121/1.3652849.
Coupled oscillator models have been used for the low frequency response (50 to 250 Hz) of a guitar. These 2 and 3 mass models correctly predict measured resonance frequency relationships under various laboratory boundary conditions, but did not always represent the true state of a guitar in the players' hands. The model presented has improved these models in three ways, (1) a fourth oscillator includes the guitar body, (2) plate stiffnesses and other fundamental parameters were measured directly and effective areas and masses used to calculate the responses, including resonances and phases, directly, and (3) one of the three resultant resonances varies with neck and side mass and can also be modeled as a bar mode of the neck and body. The calculated and measured resonances and phases agree reasonably well.
耦合振荡器模型已被用于吉他的低频响应（50 至 250Hz）。这些 2 质量和 3 质量模型在各种实验室边界条件下正确地预测了测量的共振频率关系，但并不总是代表吉他在演奏者手中的真实状态。所提出的模型在三个方面改进了这些模型，（1）第四个振荡器包括吉他体，（2）板的刚度和其他基本参数被直接测量，并且有效面积和质量被用来直接计算响应，包括共振和相位，（3）三个结果共振中的一个随琴颈和侧板质量而变化，也可以被建模为琴颈和琴体的杆模式。计算和测量的共振和相位吻合得相当好。
