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<para>compute a single interpolated output value. </para>
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<para><computeroutput>input</computeroutput> must have <ref refid="classgr_1_1filter_1_1mmse__fir__interpolator__cc_1a86b65d865598acc16a9131cb209f6596" kindref="member">ntaps()</ref> valid entries and be 8-byte aligned. input[0] .. input[<ref refid="classgr_1_1filter_1_1mmse__fir__interpolator__cc_1a86b65d865598acc16a9131cb209f6596" kindref="member">ntaps()</ref> - 1] are referenced to compute the output value. <parameterlist kind="exception"><parameteritem>
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<para>if input is not 8-byte aligned.</para>
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<computeroutput>mu</computeroutput> must be in the range [0, 1] and specifies the fractional delay.</para>
<para><simplesect kind="return"><para>the interpolated input value. </para>
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<para>Compute intermediate samples between signal samples x(k*Ts). </para>
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<para>This implements a Minimum Mean Squared Error interpolator with 8 taps. It is suitable for signals where the bandwidth of interest B = 1/(4*Ts) Where Ts is the time between samples.</para>
<para>Although mu, the fractional delay, is specified as a float, it is actually quantized. 0.0 &lt;= mu &lt;= 1.0. That is, mu is quantized in the interpolate method to 32nd&apos;s of a sample.</para>
<para>For more information, in the GNU Radio source code, see: <itemizedlist>
<listitem><para>gr-filter/lib/gen_interpolator_taps/README </para>
</listitem>
<listitem><para>gr-filter/lib/gen_interpolator_taps/praxis.txt </para>
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</para>
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