Currency data type for calculations involving money and for fixed - point calculations 數據類型用于有關貨幣的計算和固定點計算。
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 但由于定點數運算會引起量化累積誤差,均衡器的收斂速度比浮點數運算均衡器的收斂速度要慢,收斂后的穩定性也較差。
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芯片為平臺,探討了提升格式構造小波變換應用于圖象快速無損壓縮的具體實現。基于提升格式的“第二代小波變換”可以實現無損的整數到整數的小波變換,其算法的高效并行及在位計算的特性適合在dsps上實現。