เดซิเบล

A decibel is a unit of measurement that compares two amounts—such as sound power or electrical power—using a logarithmic scale, making it easier to express very large or very small ratios in manageable numbers. It matters because it allows us to describe phenomena like sound levels, signal strength, and power differences in a practical way, where a one-decibel difference represents a specific mathematical ratio between the two values being compared.

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