Decibels are our standard unit of measuring sound. Technically, a decibel is a relative unit equal to one-tenth of a bel. Decibels, however, are a bit hard to imagine. In 1936, American psychologistStanley Smith Stevensproposed a new unit – Sones – when studying psychoacoustic. Sones are ...
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It would be unfair to talk about loudness and decibels without mentioning theA-weighted decibel scale. In an attempt to make decibels more closely match human perception of loudness, the A-weighted decibel scale was developed (Figure 13). Essentially, the A-weighting curve adjusts the dB level ...