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Re: windowed sinc interpolation using FIR filter

Started by wang...@163.com April 25, 2006
Hi,

It means that FIR filter is designed using truncated sinc function by hamming window. This FIR filter corresponds to a low-pass linear phase filter and is used to interpolate between speech samples (upsample or downsample).
For more information you can consult the theory of band-limited interpolation.

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> dear All,
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>I have some difficulties in understanding windowed sinc interpolation using FIR
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>in adaptive codebook search process of CELP...(g729)
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>anyone have some reference?
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>thx a lot
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>regards,
>arida
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