摘要
动态失配整形算法在多比特ΔΣ调制中应用广泛,介绍了一种新型的动态失配整形算法。它通过树状失配整形算法将输入信号分成几段,然后再通过向量反馈失配整形算法最终将信号分成0或1分配给各个通道,从而形成输出信号。仿真结果表明此算法可以在资源耗占量和噪声整形性能之间取得较好的平衡。
Mismatch- shaping dynamic element matching （DEM） algorithms are widely used in multi -bit sigma -delta modulation to compensate the error introduced by element mismatch. A novel noise - shaping DEM is presented in this pa- per. It divides the input signal into several segments with tree - structure mismatch - shaping algorithm. Then the vector - feedback mismatch - shaping （VFMS） algorithm is applied for each segment and the binary output signal of the VFMS is fed to each channel to form the analog output. The simulated results verified that this algorithm makes a good balance between hardware requirements and noise -shaping performance.
出处
《电声技术》
2014年第5期62-65,共4页
Audio Engineering
