8−2

Woofer

Tweeter

S/PDIF Interface

% TAS3001

% TAS3001

DIR1703

S/PDIF Receiver

Digital

Amplifier

TAS5100

H − Bridge

TAS5100

PWM

TAS5100

H − Bridge

Figure 8−2. TAS3001 as a Crossover and Equalizer

8.2

Measurement-Based Speaker Correction

Although loudspeakers ideally should be designed for a uniform sound pressure response as a function of frequency,

cost and physical constraints usually result in speakers that are less than ideal. To correct large nonlinearities in the

response or to shape the response to listener preferences, speaker equalization can be performed.

In the example speaker response shown in Figure 8−3, it is seen that the sound pressure level (y-axis) varies

significantly as a function of frequency (x-axis). For speakers such as this typical loudspeaker, equalization can

improve performance and enhance the listening experience.