An optimal subband rate allocation algorithm in mean - squared error ( mse ) minimization sense was proposed , which achieves persistent optimal rate - distortion performance under any given rate constrains 提出均方誤差最小意義上的最佳三維子帶碼率分配算法,該算法在任意給定碼率限制條件下都能獲得最優(yōu)率失真性能。