Transcript
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i = j - i + 1
complex conjugates
식 5.49 와 식 5.50 을 matrix 형태로 쓰면 다음과 같다
11 j
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vector =>
-. step-down recursion
the model parameters A set of reflection coefficients The final modeling error
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jth-order polynomial )(zAj
Example 5.2.4 The Step-Down Recursion
third-order FIR filter using a lattice filter structure
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the coefficients of the second-order polynomial 식 5.53 j=2
식 5.52 ->
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-. Schur-Cohn stability test linear shift-invariant filter with a rational system function,
denominator polynomial A (z) 에서 all of the reflection coefficients are less than one in magnitude.
Example 5.2.5 The Schur-Cohn Stability Test
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식 5.53 을 이용하여 다음과 같이 표현한다 .
∴ filter is unstable