Weber’s law holds for noise discrimination above 20 dB sensation level.

Evidence

Weber’s law held for noise at moderate-to-high levels. That is, the function relating DL to dB SL was a straight line, as long as sound levels were above about 20 dB SL. We observe no change in the Weber fraction as the stimulus level increases. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 816

Categorization

Category: Factual Claims

Related

• Weber’s law holds for noise intensity discrimination above about 20 dB SL (similarity 0.99)
• Miller’s 1947 study tested Weber’s law with noise stimuli (similarity 0.87)
• Intensity discrimination improves with level for tones, violating Weber’s law (similarity 0.86)
• Near miss to Weber’s law occurs for tones but not noise (similarity 0.85)
• Weber fraction for tones is level but not frequency dependent (similarity 0.84)
• Weber’s law states JND is a constant fraction of stimulus magnitude (similarity 0.83)
• The Weber fraction for frequency declines below 1500 Hz then rises above 2000 Hz (similarity 0.83)
• The near miss to Weber’s law results from off-frequency auditory filters coding intensity (similarity 0.82)
• The near miss to Weber’s law results from the ear using spread-of-excitation across frequency (similarity 0.81)
• The near-miss of Weber’s law means threshold slopes can reach 3 to 6 (similarity 0.81)
• Pure-tone Weber functions slope downward across all tested frequencies (similarity 0.79)
• Fechner’s logarithmic law and Weber’s ratio law are one and the same. (similarity 0.79)