טווח דינמי

ערך מחפש מקורות
רובו של ערך זה אינו כולל מקורות או הערות שוליים, וככל הנראה, הקיימים אינם מספקים.
אנא עזרו לשפר את אמינות הערך באמצעות הבאת מקורות לדברים ושילובם בגוף הערך בצורת קישורים חיצוניים והערות שוליים.
אם אתם סבורים כי ניתן להסיר את התבנית, ניתן לציין זאת בדף השיחה.
ערך מחפש מקורות
רובו של ערך זה אינו כולל מקורות או הערות שוליים, וככל הנראה, הקיימים אינם מספקים.
אנא עזרו לשפר את אמינות הערך באמצעות הבאת מקורות לדברים ושילובם בגוף הערך בצורת קישורים חיצוניים והערות שוליים.
אם אתם סבורים כי ניתן להסיר את התבנית, ניתן לציין זאת בדף השיחה.

טווח דינמי הוא מונח המשמש בתחומים רבים לתיאור היחס בין הערכים המזעריים והמרביים של כמות בת-שינוי, כגון צליל או אור. הטווח הדינמי נמדד כיחס או כערך לוגריתמי בבסיס 10 (דציבל), או בבסיס 2 (סיבית, 'סטופ').

הטווח הדינמי של חושי האדם

לחושי הראייה והשמיעה של בני האדם טווח דינמי גבוה מאוד. אדם מסוגל לשמוע לחישה שקטה בחדר אטום-לקול, וכן צלילים של מופע רוק רועש. טווח דינמי שכזה עשוי לעבור אף ‎100 dB, ערך המייצג הבדל של פי עשרה מיליארד בעוצמה. אדם מסוגל לראות עצמים באור כוכבים או באור שמש בהיר, למרות שבלילה חסר ירח, עצמים מקבלים רק מיליארדית מעוצמת ההארה המתקבלת ביום שמש, כלומר טווח דינמי של ‎90 dB.

ערך זה הוא קצרמר בנושא מדעים. אתם מוזמנים לתרום לוויקיפדיה ולהרחיב אותו.

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