Problem 146. Tune your guitar

Created by the cyclist

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Given an input string with the scientific pitch notation for standard tuning (</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"http://en.wikipedia.org/wiki/Guitar_tunings#Standard_tuning\"><w:r><w:t>http://en.wikipedia.org/wiki/Guitar_tunings#Standard_tuning</w:t></w:r></w:hyperlink><w:r><w:t> ) of a guitar string (e.g. 'E4'), return the frequency (to nearest whole number) in hertz (in this case, 330).</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

239 Solutions
113 Solvers

Last Solution submitted on Dec 18, 2020

Last 200 Solutions

Problem Comments

3 Comments

3 Comments

Boris Huart on 9 Jan 2013

Many solutions depend on the tested inputs... Is there a way to prevent it ?

Corentin OGER on 21 Feb 2019

I posted 2 working solutions, they're not the shortest, but at least, they work with ANY input (C0, B10...), not just the tested ones!
Almost all working solutions are just a plain lookup tables : boring.

Benjamin on 26 Sep 2020

Add some sharps and flats to the test cases.

Solution Comments

Solution 1732506

1 Comment

1 Comment

Corentin OGER on 21 Feb 2019

Works for all 70 natural notes between 'C0' (16Hz) and 'B9' (15804Hz)

Solution 1732496

1 Comment

1 Comment

Corentin OGER on 21 Feb 2019

Works for all 70 natural notes between 'C0' (16Hz) and 'B9' (15804Hz)

Solution 1727061

1 Comment

1 Comment

Corentin OGER on 21 Feb 2019

Only works for tested inputs
tried D6 => 147 instead of 1175

Problem Recent Solvers113

Problem Tags

guitar string pun

Community Treasure Hunt

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

Start Hunting!

Problem 146. Tune your guitar

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers113

Suggested Problems

More from this Author23

Problem Tags

Community Treasure Hunt

Problem 146. Tune your guitar

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers113

Suggested Problems

More from this Author23

Problem Tags

Community Treasure Hunt

Players