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在MBE算法基础上研究利用帧间谱幅度相关性，通过一个简单的线性预测公式，使得仅用一个增益系数及一个预测系数的预测公式，就能平均在帧移25ms时达到高于10阶LPC模型逼近MBE中谱幅度的精度。同时引入多模式编码以解决帧间不可预测问题。
Based on the MBE algorithm, the correlation between the inter-frame spectral amplitudes is studied. By using a simple linear prediction formula, the predictive formula with only one gain coefficient and one prediction coefficient can achieve an average of more than 10-order LPC The model approximates the spectral amplitude accuracy in MBE. At the same time, multi-mode coding is introduced to solve the inter-frame unpredictable problem.