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  1. Re: Most useful option to record and analyze audio?

    Thanks The trick,
    The code is complex to me to read because my programming level is low.
    How should I use your class to record in a buffer?
  2. Most useful option to record and analyze audio?

    I'm writting a code where a client program records sound from the audio input device, sends it to a server and the server analyzes some characteristics of that audio information.

    Well, I started...
  3. Re: How to detect similar colors in a picture?

    I don't fully understand what you're trying to explain to me.
    So, you suggest that I've to change (add or substract) a percentaje from each of the R,G,B components... so if I've a color, for example...
  4. How to detect similar colors in a picture?

    I was just trying to detect similar colors in a picture.
    First I load a picture in a picturebox and then I select some hundreds of similar colors in the picture using the mouse and getpixel api.
    ...
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    Re: Adjust Form to Picture1 size?

    Thanks to all. The solution has worked.
  6. Replies
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    316

    [RESOLVED] Adjust Form to Picture1 size?

    I've a form with a picturebox control in it. The picturebox.autosize value is true, so after loading the jpg in picture1 I want to automatically resize form to adjust to the picture1 height and...
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    Record sound and save it in Flac format?

    I want to know if it's possible to record audio and save it in flac format.
    I don't know if I need to save it first in Wav and then transform it to flac or if I can save it directly to flac.
    ...
  8. Re: Change mouseicon when X is near from line?

    I've solved it. I create 2 areas (1 for the green line and the other for the red line) and I follow the next:

    If (X>PreGreenLine And X<PostGreenLine) Or (X>PreRedLine And X<PostRedLine) Then
    ...
  9. [RESOLVED] Change mouseicon when X is near from line?

    I've a picturebox where I've 2 vertical straight lines in a program where I want to represent a raw waveform in that picturebox.

    1 line is green and it's in the left (I use it to indicate the...
  10. How to capture graphics from other program?

    I've a program where there are drawn some graphics (it's a videogame). I thing the element where the graphics are drawn is a picturebox, but I'm not sure.

    There is any way to capture those...
  11. Re: If... Then (without using = true or = false)

    Thank you very much to all for the answers. I understand it now.
  12. [RESOLVED] If... Then (without using = true or = false)

    I'm reading the following code:



    I thought the use of If... Then using a Boolean variable should be


    What means If fRecording Then... without the use of = false or = true?
  13. [RESOLVED] Extract R,G and B value from a string in format "R,G,B"

    I've a string of this format:
    R,G,B where R/G/B are integer

    I want to get each value without the "," symbol.
    Example: 134,45,31
    134
    45
    31

    R/G/B are integer values that can vary from 0 to...
  14. Replies
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    Re: Reading tones from *.wav files?

    Yes, I see. A pure tone is the most simple case because it's a periodic function and it's very easy to calculate.
    The calculations get harder when there is not a single tone. Usually in any audio...
  15. Replies
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    922

    Re: Reading tones from *.wav files?

    Hello again,
    After reading more information about the subject I understand it better. A raw *.wav file (in the data chunk) contains amplitudes. These amplitudes represents the samples of the...
  16. Replies
    19
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    922

    Re: Reading tones from *.wav files?

    After reading your post I understand it better. I'm going to perform some practise with the information you've suggested.
  17. Replies
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    922

    Re: Reading tones from *.wav files?

    Of course, but how can I read a 16 bit wave file?



    As you and others have explained the 8 bit mono can be read as 1 unsigned byte per sample.
    The result will be -128 to 127 and I need to...
  18. Replies
    19
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    922

    Re: Reading tones from *.wav files?

    https://ccrma.stanford.edu/courses/422/projects/WaveFormat/


    When I try the code you've shown, I get integer values below 0. I mean, negative numbers.
    There is something that I don't understand.
  19. Replies
    19
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    922

    Re: Reading tones from *.wav files?

    Just one more question...
    If I want to read one individual sample... how can I do that?
    Maybe in this way?

    Mono, 8 bit unsigned PCM


    Dim IndividualSample as Integer
    Dim TheFile as String
  20. Replies
    19
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    922

    Re: Reading tones from *.wav files?

    I want also to know how to calculate de decibel of a specific frequency.
    Any ideas?
  21. Replies
    19
    Views
    922

    Re: Reading tones from *.wav files?

    Thanks for the link, I've just read it and I think I can understand it a little bit better.
    The main question that remains at the moment is about bit depth. After reading the link you've suggested...
  22. Replies
    19
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    922

    Re: Reading tones from *.wav files?

    So you mean that if I've a 44,000 times per second sampled file, that means that each second there are 44,000 bytes of information inside the raw audio data chunk?.

    I don't know if I've understood...
  23. Replies
    19
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    922

    Reading tones from *.wav files?

    Well, I've been looking for some information about reading individual frequencies from *.wav files.
    I know that the wav file is structured in 1 chunk and 2 sub-chunks (format and data) as we can see...
  24. Transverse to longitudinal wave representation?

    Hi folks,
    I'm trying to write a code to produce a sound tone where we can select the desired frequency.
    In one picturebox I want to show the sine wave of that tone.

    In the second picturebox I...
  25. VS 2010 Any point cloud api to use with the webcam?

    I've a webcam and I want to use the video input to get 3d points of an object, for example like this:
    http://www.shapecapture.com/picts/point-cloud64.jpg

    There is any vb code or api that I can...
  26. VS 2010 How to increase compilation number each time the app runs

    I want to know if it's possible to increase the compilation (and how) number of a vb.net 2010 program each time I press F5.
  27. VS 2010 Re: How to check if a website have been visited?

    I think it could also be done reading the data of the internet active connection, right?
    I thought it can be possible from there to obtain the websites that are being visited.
  28. VS 2010 Re: How to check if a website have been visited?

    I've no idea that I can use Google analytics.
    No, I'm not creating an asp.net project, I just want to create an application to notify new posts, new threads, etc... on a forum. For that reason I...
  29. VS 2010 How to check if a website have been visited?

    The program has to check if a website have been visited.
    The main doubt is that today there are tons of navigators (firefox, chrome, explorer...) and I don't know how can I start.
    I've to...
  30. Replies
    2
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    VS 2010 Re: Web forum checker

    I'm having the same doubt as you. I want to create a desktop application on Vb.net 2010 to check if the user's post have been replied, if there are new messages, etc...
    I want to know where can I...
  31. Replies
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    492

    VS 2010 Re: How to... FormBorderStyle 3D Sizable?

    Ok, thanks. I cannot find any other solution on the net. So I will keep using the panel control.
  32. Replies
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    492

    VS 2010 Re: How to... FormBorderStyle 3D Sizable?

    FormBorderStyle -> Fixed3D
    SizeGripStyle -> Show

    And I cannot see the arrows to resize the form..
  33. VS 2010 Re: Stop RectangleShape flickering on form resizing?

    Exactly. Thanks for the information.

    One more question... once the rectangle has been drawn in the form and it works correctly, I want to ask about drawing it in a panel1 control. I add a panel...
  34. VS 2010 Re: Stop RectangleShape flickering on form resizing?

    It works as required. When I introduce Me.DoubleBuffered = True in Form_Load it work much more better than in all the other cases. I've also tried to see the improvements when I introduce the...
  35. VS 2010 Re: Stop RectangleShape flickering on form resizing?

    It works right now in both cases, when I increase the size of the form and when I decrease the size of the form.
    The only detail is that it still flicks. But I'm trying a solution.



    At the...
  36. VS 2010 Re: Stop RectangleShape flickering on form resizing?

    1. Breakpoint MyBase.OnPaint(e) only
    - The program loads but just after the form loads the program is interrupted in that point (breakpoint) so I cannot access to the form

    2. Breakpoint in...
  37. VS 2010 Re: Stop RectangleShape flickering on form resizing?

    Protected Overrides Sub OnPaint(e As System.Windows.Forms.PaintEventArgs)

    MyBase.OnPaint(e)
    e.Graphics.DrawRectangle(MyPencil, 15, 15, Me.Width - 100, Me.Height - 100)

    ...
  38. VS 2010 Re: Stop RectangleShape flickering on form resizing?

    I don't fully understand the solution you're explaining. I think you want to say

    Protected Overrides Sub OnResize(e As System.EventArgs)
    MyBase.OnResize(e)
    End Sub



    I've...
  39. VS 2010 Re: Stop RectangleShape flickering on form resizing?

    I'm working with that method and it works much better.


    Yes, it worked but I was working with different options and I've introduced new code in the program. At the moment the best way is the way...
  40. VS 2010 Re: Stop RectangleShape flickering on form resizing?

    Thanks it works, but it doesn't update the graphics while resizing. I forgot to mention that the graphics need be updated while the form is resized.
    I've been reading more documentation and some...
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