1770-4. We have developed a 22.2 multi-channel sound loudness meter that is compliant with the revised Recommendation, and it is now being used for 8K program production. We will continue to ...

The PHON scale was devised to express this subjective impression of loudness, since the DECIBEL scale alone refers to actual sound pressure or sound intensity levels. Historically, the A, B, and C ...

Sound level meters usually contain different weighting networks (designated ... in a manner similar to the response of the ear (see EQUAL LOUDNESS CONTOURS), but only moderately by the B network and ...

Why is there such a difference between the loudness of programmes and adverts? R.128 is now in place to reduce the difference. Viewers complain about many aspects of television programmes ...