Solved

Delphi Sound Input

Posted on 1997-10-05
9
218 Views
Last Modified: 2010-04-04
I want to be able to write a guitar tuner.  I have sussed out low level wav playback but not input.  I want to be able to alter a visual component using the data coming in from the input.  I don't need to save the sound to a file.  Even being able to alter a visual component from a wav being played would help - I just can't find a way of tapping into the data as it is being played.  Ultimately I would like to get a frequency analyser working.

I have been asked which port - well line in and mic in, the most important being mic in.  It would be nice to give those with an electric guitar the chance to plug straignt into the soundcard.  What I have been trying to do is to input a wav file and then read the wav data but if I could get at the raw data then all the better!

In response to Mirek - no I don't want wav to midi conversion, that would be hard!  All I want is to be able to change a display (meter needle) in sympathy with sound input.  I have had an idea of writing a component that has an event in it that is triggered by the sound buffers but I can't find a windows message to do it!  Thanks for the replies - keep them coming!
0
Comment
Question by:welbourn
  • 5
  • 3
9 Comments
 
LVL 8

Expert Comment

by:ZifNab
ID: 1346853
Input from which port?
0
 

Author Comment

by:welbourn
ID: 1346854
Edited text of question
0
 
LVL 3

Expert Comment

by:mirek071497
ID: 1346855
Do you need convert wav to midi notation ? I think so this is very hard, but you can try play with Fourier transformation.
0
Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 

Author Comment

by:welbourn
ID: 1346856
Edited text of question
0
 
LVL 8

Expert Comment

by:ZifNab
ID: 1346857
0
 
LVL 8

Expert Comment

by:ZifNab
ID: 1346858
Hi welbourn,
I was just reading the last edition of UNDU, and I think it's also whortwhile for you to look at it. There is an article about recording and playing wav files. It's very interesting.
You can find this edition on http://www.informant.com/undu
Nice reading pleasure!
c.u. ZifNab

0
 
LVL 8

Expert Comment

by:ZifNab
ID: 1346859
Hi,
Give me a comment if this is what you wanted!
I'd like to have some feedback
0
 

Author Comment

by:welbourn
ID: 1346860
Thanks ZifNab - by the way the name is Rob, the info looks great thanks for your dilligence.  I will look at this over the weekend.  It's weird I had found the relisoft page, the only place on the net that seems to have dealt with this issue and I was just starting the process of creating delphi code for it.  The page you directed me to has already done this - cheers.  I need this info as a basis for my final year uni project and I was therefore getting quite desperate for it.  How do we close this question and award point etc, let me know.


0
 
LVL 8

Accepted Solution

by:
ZifNab earned 200 total points
ID: 1346861
Hi Rob,

To close this question, somebody has to answer this, like now. Then you can grade the answer or you can reject it. I write the last comment again, so your question is answered :

was just reading the last edition of UNDU, and I think it's also whortwhile for you to look at it. There is an article about recording and playing wav files. It's very interesting.
You can find this edition on http://www.informant.com/undu 

Nice reading pleasure! Good luck with your uni project!
c.u. Tom
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Delphi TcxGrid group footer summary 3 316
Delphi XE10, MySQL Query 4 164
Delphi Mdi application Child forms get behind control 7 270
How to debug For loops? 3 56
A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

839 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question