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cardioid n.【數學】心臟線。

cardiology

They not only inherit the advantages of bezier curves and b - spline curves , also can be used to represent straight lines precisely and some remarkable transcendental curves precisely , such as circular arc , ellipse , cardioids and twisted pair line etc . especially , the uniform t - b - spline curve of three degrees is smoother than b - spline curve and c - b - spline curve of the same order 此外由于它們還具有三角函數的優點,故既可以精確表示直線段、二次多項式曲線段又可以精確表示圓弧、橢圓弧等二次曲線以及心臟線、雙紐線等超越曲線。特別地, 3次均勻t - b樣條曲線曲面比同階均勻b樣條( c - b樣條)曲線曲面具有更高的光滑度。

By taking advantage of the characteristic of the curves ' expression , the algorithm changes the cardioid curve into the linearly combination of some simple iterations 基于曲線表達式的特點,該算法將心臟線的點坐標迭代關系轉化為幾個簡單的迭代關系的線性組合。

The microphone has very selective directionality - we use the term ' hyper - cardioid ' to describe the directional characteristics of the unit 麥克風已經非常有選擇性的方向性-我們用 '超心 '來形容定向結合本單位的特點。

Other patterns include “ super cardioid ” ( very directional ) , which may be useful if you want to tighten up the sonic picture 別的指向型包括“超心型” (超指向) ,假如你想縮緊聲場可能會用得著。

On each step of iteration , no trigonometric function is used , and only four multiplications for cardioid curve are required 迭代過程中避免了三角函數的運算,每步僅需4次(心臟線)乘法運算。

Cardioid polar response 心形極座標響應

Cardioid is directional on one side only , and is typically used for drums 心形是單一的指向一個方向,非常適合用來錄鼓。

For the cardioid curve , a fast pixel - level drawing algorithm is presented 摘要給出了快速繪制心臟線的逐點算法。

What does the cardioid envelope 心臟線的包絡為何