1. L eq value ( equivalent sound pressure level ), defined by standards. 2. Affected articles include decibel, sound pressure, sound pressure level , and audiogram. 3. The treatment of sound pressure level is inconsistent with standard reference works across Wikipedia. 4. At ordinary sound pressure levels , most humans can hear down to about 20 Hz. 5. This allows independent control of the sound pressure levels for the audience and the performers. 6. Doing so can alter their frequency response and cause distortion, especially at high sound pressure levels . 7. "' Hearing level "'is the sound pressure level produced by an audiometer at a specific frequency. 8. Most of today's appliances produce sound pressure levels between 45 and 120 decibels at ten feet. 9. Interaural level differences ( ILD ) represents the difference in sound pressure level reaching the two ears. 10. Without a specified reference sound pressure, a value expressed in decibels cannot represent a sound pressure level .
