TAS5706APAPR datasheet(33/71 Pages) TI1

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Dynamic Range Control (DRC)

DRC Input Level

M0091-01

1:1 TransferFunction

Implemented TransferFunction

–1

AlphaFilterStructure

B0265-01

Energy

Filter

a w

T,K,O

DRC1

DRC2

0x3A

0x40,0x41,0x42

0x3B/0x3C

0x3E/0x3F

0x43,0x44,0x45

0x3D

Compression

Control

Attack

and

Decay

Filters

AudioInput

DRCCoefficient

NOTE:

=1 – a

TAS5706A

TAS5706B

www.ti.com............................................................................................................................................. SLOS606D – MARCH 2009 – REVISED SEPTEMBER 2009

The DRC scheme has a single threshold, offset, and slope (all programmable). There is one ganged DRC for the

left/right channels and one DRC for the subwoofer channel.

The DRC input/output diagram is shown in Figure 44.

Professional-quality dynamic range compression automatically adjusts volume to flatten volume level.

• One DRC for left/right and one DRC for subwoofer

• Each DRC has adjustable threshold, offset, and compression levels

• Programmable energy, attack, and decay time constants

• Transparent compression: compressors can attack fast enough to avoid apparent clipping before engaging,

and decay times can be set slow enough to avoid pumping.

Figure 44. Dynamic Range Control

Figure 45. DRC Structure

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Product Folder Link(s): TAS5706A TAS5706B

TAS5706A is Not Recommended for New Designs

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