The threshold for audible sound (at 1 kHz) is defined as 0SPL (sound pressure level). The ear senses a similar difference in loudness between two sounds that differ by ...

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the same difference in logarithm of pressure (peak to peak amplitude of pressure oscillation)

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the same difference in intensity (square of the peak to peak amplitude of pressure oscillation)

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the same difference in pressure (peak to peak amplitude of pressure oscillation)

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the same ratio in pressure (peak to peak amplitude of pressure oscillation)

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the same difference in logarithm of intensity (square of the peak to peak amplitude of pressure oscillation)

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the same difference in dB

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The threshold for audible sound (at 1 kHz) is defined as 0SPL (sound pressure le...

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