CM6308 C-Media Electronics, Inc., CM6308 Datasheet - Page 29

• Manufacturer Part Number: CM6308
• Description: Cm6308 Usb Audio Chip Specification
• Manufacturer: C-Media Electronics, Inc.

Date: 09/04/2007
Dynamic Range is defined as the difference, in decibels (dB), between the loudest and quietest
sounds in any particular piece of audio content. Classical music is a good example, with ranges
from piano (soft) to forte to FFF (for extremely loud). Movies also typically have a wide dynamic
range, which may cause you to have to turn the volume up and down as scenes change. For
example, when watching a movie at home, you may be forced to turn up volume to hear the
dialogue in a quiet scene, and then quickly turn it down again during a car chase scene that
follows. In this way, there may be times in a home theater environment when it would be useful
to be able to control the dynamic range.
With Dynamic Range Control enabled, the full dynamic range (A) of the program is reduced
(B).
In CM6308, The maximum Increase Level is +12.5dB.
7.5
A
DRC (Dynamic Range Compression)
Peaks Clipped
+20dB
+10dB
-10dB
-20dB
-30dB
-40dB
-50dB
-60dB
Hard to heard
Lower Levels
0dB
A
-
DRC
29/42 -
Lower Levels Raised
B
Peaks Reduced
Peaks Reduced
B
Audio and Voice Applications
Single-Chip USB Solution for
Lower Levels Raised
CM6308
Version: