Why are Loudness and PPM important?
Why are Loudness and PPM important?
Loudness and PPM are used as references to control the maximum audio levels in broadcast material. The issue is that a program and the commercial that follow it may have the same maximum PPM levels, but the commercial will frequently be perceived as louder. Having a loudness measurement means that there is now a tool such that the audio levels in the commercial may be adjusted to provide the same perceived loudness as the program that preceded it.
PPM vs. Loudness: Complications
Loudness gives the user a much better idea of how loud a sample will be perceived, although PPM is still widely used as a better recognised measure of sound. Measurements for loudness and PPM are closely related and it should be noted that changing one would alter the other, possibly causing it to be raised above its threshold.
Loudness is a newer measurement, and attempts to put a figure on ‘how loud’ the material appears to be to a listener. How a person ‘hears’ the loudness is based on many factors, such as type of programme material, the listeners mood and health, and whether they like the programme material, so it is quite subjective. The Loudness measurement attempts to put a number on how an average listener might respond to the programme material.
Loudness is a newer measurement, and attempts to put a figure on ‘how loud’ the material appears to be to a listener. How a person ‘hears’ the loudness is based on many factors, such as type of programme material, the listeners mood and health, and whether they like the programme material, so it is quite subjective. The Loudness measurement attempts to put a number on how an average listener might respond to the programme material.
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