upfirdn

Upsample, FIR filter, and downsample.

📝Syntax

Y = upfirdn(X, H)
Y = upfirdn(X, H, P, Q)
Y = upfirdn(X, H, P, Q, dim)

📥Input Arguments

Parameter	Description
X	nonempty nonsparse input signal.
H	nonempty nonsparse FIR coefficients. A matrix applies one filter column per signal column.
P	upsampling factor.
Q	downsampling factor.
dim	dimension to process.

📤Output Arguments

Parameter	Description
Y	multirate filtered output.

📄Description

upfirdn is the basic polyphase-style multirate operation used by resampling functions.

When H is a matrix, each column of H filters the corresponding signal column.

💡Examples

Y = upfirdn([1 2 3], [1 1], 2, 2);

Y = upfirdn([1; 2], [1 2; 3 4]);

🔗See Also

🕔Version History

Version	Description
2.0.0	initial version