Posted by Don Pearce on 11/16/15 11:52

On Mon, 10 Jul 2006 13:05:17 GMT, "dadiOH" <dadiOH@guesswhere.com>
wrote:

>Don Pearce wrote:
>> On Mon, 10 Jul 2006 11:10:55 GMT, "dadiOH" <dadiOH@guesswhere.com>
>> wrote:
>>
>>> David Morgan (MAMS) wrote:
>>>
>>>> I had a look, and I can't see how the device works without modifying
>>>> dynamic range
>>>
>>> Simply put...
>>>
>>> 1. Find max volume among all songs
>>> 2. "Turn up the volume" in all others so their max is the same as the
>>> loudest.
>>
>> Won't work - can't work. If you have a mixture of music, then peak
>> levels as related to average loudness will vary wildly. The loudest
>> sounding will have highly compressed dynamics, with most of the tune
>> crammed against the limit. If you try to increase the levels of all
>> the others until they sound as loud, they will all be clipped to hell.
>
>No, not necessarily *sound* as loud just increase the values in the softer
>songs until the greatest is equal to the greatest in the loudest song. For
>example...
>
>Loud song greatest value = 29000
>
>Song to be changed, greatest value = 24,500
>
>(29000)-(24500) = 4500. Therefore, all values in this song are to be
>increased by 4500 when played.

But what does that do? They are just numbers, and they have only the
most tangential relationship to the perceived playing of the track -
which is what this is all about.

Incidentally the maths is all off too. You can't do this by adding
numbers, you have to multiply.

d

--
Pearce Consulting
http://www.pearce.uk.com

[Back to original message]