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ｓａｗ 的 ６４ｂｉｔ定點．．．
* the bit depth of the internal processing math (which can either be floating point or fixed point). What this means is how many digits calculations occur at - bigger bit depths (i.e. more digits to work with) means more precise calculations. SAW uses 64bit fixed point math for its multiplication and division. Most other native PC based DAW apps use 32bit floating point for this. The SAWStudio built in eq, the Anwida and JMS Audioware SAW native plugins, and some of the filter codes used in the Sonoris SAW native plugins use 64bit floating point math.
* the bit depth of the returned figures after a DSP has been performed - i.e. after a signal process is done, how many digits are passed to the next signal process prior to output. In SAW this is at 32bit fixed point using the full DWORD. With most other PC based DAW appps this is a 24bit + 8bit mantissa 32bit IEEE floating point file.
[ 本帖最后由 himhui 于 07-9-10 14:47 编辑 ]
* the bit depth of the internal processing math (which can either be floating point or fixed point). What this means is how many digits calculations occur at - bigger bit depths (i.e. more digits to work with) means more precise calculations. SAW uses 64bit fixed point math for its multiplication and division. Most other native PC based DAW apps use 32bit floating point for this. The SAWStudio built in eq, the Anwida and JMS Audioware SAW native plugins, and some of the filter codes used in the Sonoris SAW native plugins use 64bit floating point math.
* the bit depth of the returned figures after a DSP has been performed - i.e. after a signal process is done, how many digits are passed to the next signal process prior to output. In SAW this is at 32bit fixed point using the full DWORD. With most other PC based DAW appps this is a 24bit + 8bit mantissa 32bit IEEE floating point file.
[ 本帖最后由 himhui 于 07-9-10 14:47 编辑 ]
內部處理運算的 bit 數精度 可以是浮點或定點 - 意思是在過程中每個單位會多少數字去作為計算, 數字越多就代表越精細和準確。 saw 是用 64bit 定點(乘除), 而一般的音頻工作站是32bit 浮點。另外, saw 的 eq 就滲入了64bit浮點, 而 jms、 anwida、sonoris也用上了。 (一篇比較定點浮點運算的文章 http://www.audiobar.net/viewthread.php?tid=147993&extra=page%3D1%26amp%3Bfilter%3Ddigest )
經過了處理器後回來的數據 bit 數的精度 - 訊號處理過後再去到在輸出前. 每個單位以多少數字去處理。 saw是以 32bit 定點 全 dword (DWORD- Double Word. Equivalent to a long. Usually relates to a memory address), , 而很多其他是用 (24bit + 8bit mantissa) 32bit IEEE floating point。
[ 本帖最后由 himhui 于 07-9-10 16:42 编辑 ]
經過了處理器後回來的數據 bit 數的精度 - 訊號處理過後再去到在輸出前. 每個單位以多少數字去處理。 saw是以 32bit 定點 全 dword (DWORD- Double Word. Equivalent to a long. Usually relates to a memory address), , 而很多其他是用 (24bit + 8bit mantissa) 32bit IEEE floating point。
[ 本帖最后由 himhui 于 07-9-10 16:42 编辑 ]