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 ...

Given its appearance in one form or another in all but the cheapest audio gear produced in the last 70 years or so, you’d be forgiven for thinking that the ubiquitous VU meter is just one of tho ...

The very low frequencies are discriminated against quite severely by the A network, in a manner similar to the response of the ear (see EQUAL LOUDNESS CONTOURS), but ... The sound level meter, however ...

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 ...