Problem 42793. Fast 1-D Convolution (full shape)

Created by Peng Liu

Solve Later

This is the first problem in the fast 1-D convolution series. This problem asks you to find a fast algorithm to compute the 1-D convolution in its full output shape.

There exists a fast 1-D convolution algorithm way more efficient than MATLAB's built-in conv function invoked in the form conv(u,v,'full'), and the performance improvement is more pronounced when length(u) and/or length(v) are large. Do you know how? Try it out.

Next problem: Fast 1-D Convolution (same shape).

Solve

Solution Stats

63 Solutions
29 Solvers

Last Solution submitted on Nov 02, 2023

Last 200 Solutions

Problem Comments

3 Comments

3 Comments

li haitao on 16 Nov 2018

The same codes, the score is from 5 to 49, too wide.

li haitao on 16 Nov 2018

score.p is invalid now, the score is size, not speed.

Rafael S.T. Vieira on 21 Aug 2020

The function conv is not slow. It is like complaining that the function sum is slow. And the only way the function sum can be slow is if we are not using it properly.

Solution Comments

Show comments

Problem Recent Solvers29

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 42793. Fast 1-D Convolution (full shape)

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers29

Suggested Problems

More from this Author29

Problem Tags

Community Treasure Hunt

Problem 42793. Fast 1-D Convolution (full shape)

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers29

Suggested Problems

More from this Author29

Problem Tags

Community Treasure Hunt

Players