Lexicon 480L | PDF - Freeverb3
Lexicon 480L | PDF - Freeverb3
Lexicon 480L | PDF - Freeverb3
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<strong>Lexicon</strong> <strong>480L</strong> Owner's Manual<br />
Levels in the Digital Domain<br />
Analog signals, by nature, have an infinite range of<br />
level. During conversion to digital, levels are quantized<br />
to absolute values, and expressed as a number of bits.<br />
The <strong>480L</strong> provides 18-bit resolution in both the analog<br />
and digital paths. In the digital domain, it is important to<br />
provide adequate headroom so that peak amplitude<br />
does not exceed dBFS. The difference between the<br />
headroom provided and the dither noise, or least<br />
significant bit, is the usable dynamic range of the<br />
system.<br />
As you can see in the figure below, the <strong>480L</strong> provides<br />
signal-to-noise and dynamic range that exceed many<br />
popular digital recording media.<br />
# Bits Dynamic Range<br />
in dB<br />
LARC Meters<br />
Use of Dynamic Range<br />
in an 18 bit system<br />
Use of Dynamic Range<br />
in a 16 bit system<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
13<br />
14<br />
15<br />
16<br />
dBFS<br />
-6 dB<br />
-12 dB<br />
-18 dB<br />
-24 dB<br />
-30 dB<br />
-36 dB<br />
-42 dB<br />
-48 dB<br />
-54 dB<br />
-60 dB<br />
-66 dB<br />
-72 dB<br />
-84 dB<br />
-90 dB<br />
-96 dB<br />
+12 dB<br />
+6 dB<br />
0 dB<br />
-6 dB<br />
-12 dB<br />
-18 dB<br />
-24 dB<br />
HEADROOM<br />
84 dB Dynamic Range<br />
18 dB Headroom<br />
102 dB Theoretical Dynamic Range<br />
17 -102 dB<br />
18 -108 dB<br />
18 Bit Dither Noise<br />
HEADROOM<br />
78 dB Dynamic Range<br />
12 dB Headroom<br />
90 dB Theoretical Dynamic Range<br />
16 Bit Dither Noise<br />
Dynamic Range of Digital Signal Path<br />
2-12