Currency data type for calculations involving money and for fixed - point calculations 数据类型用于有关货币的计算和固定点计算。
However , since the fixed - point calculation maybe cause cumulative quantization error , the convergent performance of fixed - point equalizer is not better than that of floating - point equalizer 但由于定点数运算会引起量化累积误差,均衡器的收敛速度比浮点数运算均衡器的收敛速度要慢,收敛后的稳定性也较差。
Abstract : this paper discusses implementation of lifting scheme for wavelet transform used in lossless compression of image on the platform of tms320c6201 dsps . the second generation wavelet transforms based on lifting scheme can construct lossless integer to integer wavelet transforms . the lifting scheme has a lot of algoritmic advantages : efficiency , parallelism , in - place calculation . so it can be well implemented on dsps . this paper also discusses improving implementation of wavelet transform . taking advantage of the fixed - point calculation performance of tms320c6201 , the implementation can calculate integer wavelet transforms using fixed - point calculation 本文以tms320c6201芯片为平台,探讨了提升格式构造小波变换应用于图象快速无损压缩的具体实现。基于提升格式的“第二代小波变换”可以实现无损的整数到整数的小波变换,其算法的高效并行及在位计算的特性适合在dsps上实现。