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Date: 2023-09-11
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Date: 13-6-2022
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Date: 2023-09-29
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frequency (n.)
A term derived from the study of the physics of sound, and used in ACOUSTIC PHONETICS, referring to the number of occurrences of a sound wave in a unit of time (usually a second); it is measured in hertz (Hz), a term which has replaced the older ‘cycles per second’. An increase in the frequency of a sound correlates with an auditory sensation of higher PITCH.
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5 علامات تحذيرية قد تدل على "مشكل خطير" في الكبد
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اللجنتان العلمية والتحضيرية تناقش ملخصات الأبحاث المقدمة لمؤتمر العميد العالمي السابع
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