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Implementation example using the ST10 DSP library

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7.3.2

Phase response

The following figure gives the phase response.

Figure 11. Phase response

The code implemented to generate this digital low-pass filter can be used to implement a high-

pass, a passband or a cutoff band filter. One simply needs to change the filter’s coefficients and

the number of coefficients. However, with this implementation, care should be taken with the

sampling frequency, which changes with the filter’s coefficients number and the ST10F27x

frequency.

-180

-80

20

120

1

10

100

1000

10000

Frequency