|
| quote: | Originally posted by harriz
How many times do we have to got through this?
|
we salute you harriz and your very informative posts
if you feel passionate about something discuss it in an adult manner,
i'm still waiting on a comment from your side about the 15khz roll-off
here is my source: http://www.mp3-tech.org/content/?Mp3%20Limitations
here the theory
"Scalefactor band 21 problem:
The last scalefactor band (sfb21 for long blocks or sfb12 for short blocks) has no own scalefactor. This scalefactor band covers the range from 16kHz up to the higher frequency limit, when using 44.1 or 48kHz sampling frequency.
If the resolution of this part of the spectrum must be increased (determined by the psychoacoustic model), the local scalefactor, which is missing, can not be used to adjust resolution. In this case, the only solution is to adjust the global gain value, but this global gain is impacting every scalefactor band.
To increase sfb21 resolution, the global gain value has to be reduced. To balance this, scalefactors of other scalefactor bands can be reduced. But once they reach a value of 0, they can not be reduced anymore, meaning that an higher than needed resolution will locally be used in those bands, leading to an inflate of the bitrate. When encoding sfb21 content, it is common to encounter some scalefactor bands that are encoded with a too high resolution just to accomodate the coding needs of sfb21"
so your mp3s have no frequencies above 15khz theory has gone out of the window.
and as one of the above posters has rightly mentioned vinyl playback quality rapidly deteriorates
i'm a bit disappointed by your immature posting considering your post count.
|