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TDA7406T

THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR

STMicroelectronics 

TDA7406T

2.3 Loudness

There are four parameters programmable in the loudness stage:

s Attenuation: 0 to -19dB attenuation in 1dB steps vs. frequency (see the response at fP = 400Hz in Figure 2).

s Peak Frequency: Four programmable peak frequencies: 200,400,600 and 800Hz (see Figure 3).

s Filter Order: First or second order frequency response (see Figure 4).

s Flat mode: Selectable flat-mode. In flat mode the loudness stage works as a 0dB to -19dB attenuator.

Figure 2. Loudness Attenuation @ fP = 400Hz.

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Figure 3. Loudness Center frequencies @ Attn. = 15dB

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