Loudspeaker compensation

AN3340

20/24

Doc ID 18453 Rev 1

Figure 21.

Flat-screen-TV speaker frequency response with compensation

To better show the improved performance the frequency responses before and after

Speaker Tune compensation have been superimposed and are shown in Figure 22.

Figure 22.

Flat-screen-TV speaker response before and after compensation

In the frequency range 100 Hz to 10 kHz the improvement is clearly visible.

Speaker Tune has added gain also in the frequency range higher than 11 kHz. However,

due to the deep attenuation around 10 kHz, the high-frequency performance shows less of

an improvement than the mid-range performance even though three biquads have been

used for compensation in this upper frequency band.

10

2

10

3

10

4

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

Frequency [Hz]

Speaker COMPENSATED

10

2

10

3

10

4

-90

-80

-70

-60

-50

-40

-30

VESTEL - 32-inch LCD-TV - Frequency Response before and after speaker compensation

Frequency [Hz]

Original condition

After SPEAKER COMPENSATION