C# - Recommended Way To Work With Audio In .NET Applications?
Dec 10, 2009
I'm trying to get started with a simple audio application under .NET 3.5 (preferably in VB.NET, but will happily use C#). What I'd like to do is: Continuously record audio from (the default) Windows audio input device in 8-bits-per-sample PCM format For every N bytes captured, do some analysis on the raw audio (some RMS and/or SPL calculations -- basically what you'd need for a pretty VU bar graph thingy) If the audio fragment is found interesting after analysis, save it using a compressed file format (e.g. MP3)
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Jun 3, 2009
In the first comment (by J.W.) to this question: Using ObjectDataSource and DataObjectTypeName, How Do You Handle Delete Methods With Just An Id Parameter?, it is said that using ObjectDataSource is a bad design. What is considered good design for well-architected ASP.NET applications?
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Jul 6, 2010
How can I make an application that can record the audio output of another application using VB.net?
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Jan 28, 2010
I'm developing a standslone system for my school project. I'm developing an audio management system which allow user to add audio files itself into database together with the audio information such as artist name and album year. I just started it few days ago and face some problems.. my song in the playlist wont continue to play after 1 finished and i need some idea on how to store the audio files into database ... in blob types may be?
Heres the screenshot and codes
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bt_add.Click
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Aug 18, 2010
About what audio components are exposed by the .net framework?
Can I work with .wav files? What kind of things can I do with .wav files as far as vb .net is concerned? Can I record? What should I look for when looking for info for .net related audio at msdn. Where else can I find info on this?
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Mar 14, 2012
Ok, so I have set my form as the parent of a 3rd party application.Appactivate works when the 3rd party application is not a child of my form.It would appear that if the application is not on the taskbar (A non taskbar application) appactivate does not work.
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Mar 13, 2009
I just want to ask or I need some idea on how to convert wav files to mp3 and compressed the file to make the size smaller. I've search on the internet and find vorbis.dll as a reference object and lame.exe for converter. With regards to the audio compression, i downloaded monkey's audio software but doesnt have an idea on how to incorporate it.
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Jun 11, 2009
Im trying to capture the audio played on my laptop. so i have searched the internet and found a source code for doing exactly that. the problem i have is that my audio device is not listed in the dropdown box (see picture) but it does when its run on windows xp (im running windows 7 x64) the goal of this application would be to capture my friends radio stream and save the individual played mp3's to a loction on my hard drive.(yes i have permission) i have included the source code so perhaps some 1 could have a look at it. (source code)[URL]
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Feb 26, 2007
make a VU meter for Audio to monitor audio input devices volume level such as microphone and etc?
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May 20, 2009
I have a database application developed around Access with VBA,I have used the Speech SDK and developed an application that in conjunction with MSCOMM 6.0 library calls into a remote IVR system.It sends in the credentials and queries information in response to that IVR's verbal requests. All seems successfull except for one problem;I'm using a shared SR engine and its using the system microphone as its audio input, this in turn gets the sound from the speakers which are routed to the telephone line through the modem. Of course this has a number of disadvantages - noise added to the sound from the environment and sound quality degredation as well as speaker volume dependency.
I would like the SR engine to take its audio input from the modem in paralell with the sound that goes to the speakers (so we can listen in to the call as well). This means that I must route the system audio output to the SR engine audio input. It seems that I must use an InProc SR instance - however in VBA that type is not recognized - since the shared SR uses the microphone as input by default. there is some statement to the effect that it is difficult in Microsoft's Help file. I'm unable to set the SR audio input to the modem output stream in VBA.As needed I can accomplish the C++ interface using an ActiveX object or a DLL to expose the missing API to VBA?
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Jan 30, 2010
Which is the recommended approach for copying elements from one control to another? Currently I am using something like this:
For Each a As Control In control.Controls
Controls.Add(a)
Next
Should I stick to it, or should I change to use the ControlCollection.CopyTo method instead?
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Mar 27, 2012
Just wondering what the recommended practice is for importing namespaces. Are you always better importing the namespace like the fisrt snippet of code, or are you better to type the full namespace inline with your code.
I like both methods; the first is tidier and takes less code, the second can identify exactly where your accessing some logic from which can provide some clarity when looking over the code. Just wondering if there are pros/cons for either or if this is just a personal preference, currently I use a combination but would like to keep consistant.
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Sep 28, 2009
I come from a C# background but am now working mostly with VB.Net. It seems to me that the above functions (and others - eg. UCase, LCase) etc. are carryovers from VB6 and before. Is the use of these functions frowned upon in VB.Net, or does it purely come down to personal preference?
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Sep 23, 2009
how can i play the audio after the previous audio play is finish by using directx.
assume i have audio1.wav and audio2.wav.
i play audio1.wav by this code.
audio1 = audio.fromfile("D:audio1.wav", false)
how can i play audio2.wav after audio1.wav is finish? without use any button or signal. just depends on when the audio1.wav is finish, then audio2.wav will play automatically.
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Aug 7, 2010
Meanwhile waiting to further study I would like to imporve my programming skill in Visual Basic 2008, I would like to know if anybody knows where is the good link which is from Microsoft to learn and upgrade VB 2008. Mostly I am more interested in Application program specific in Engineering. anybody can show me the link, I am registered user of Microsoft Visual Studio 2008 and I am Microsoft Certified Professional.Website:
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May 1, 2009
I was wondering if there is a recommended text for the creation of custom controls? I know a few years ago this book was out: Developing Microsoft .NET Controls with Microsoft Visual Basic .NET (Pro Developer)
It was published in 2003 I think. I have a great deal of experience in VB but not in actual control development, so I don't need a primer on classes and properties and the like. Wondering if this would still be worth it? I never dove into this part of VB and .NET before.
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May 29, 2010
My program requires the reading and writing to a file that is shared among all users of a system. Currently I keep this file (an XML configuration file) in the directory that my application is installed to, which is C:Program FilesSomething by default. On Windows 7 (and probably XP too, but I haven't checked), regular users cannot write to this file. While I could probably set permissions as needed in my installation program, I'd rather find a more appropriate place for this file.All users need to read and write to it. Doing some Googling turns up C:ProgramData for Windows 7, but XP doesn't create this folder. Is there a common place on both platforms? Finally, is there an environment variable I can query for it?
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May 2, 2011
The basic setup is this: VB.NET application, using Windows.Forms, a parent form is shown and the user interacts with that. Now, I want to show a child form, modally, configure that form with data from the parent and have the user interact with that child form and then return information to the parent code.Here is one approach that I have used, but it is a bit awkward. Parent has this code:
Dim cf as Child_Form
Dim initdata(3) As Byte
' Set up initdata[code].....
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Sep 12, 2011
I am working on a project that is used for key broadcasting. Don't worry nothing illegal, I'm making a multibox application for world of warcraft. However I am having trouble when it comes to launching and manipulating other applications from another.
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Aug 15, 2011
how to connect different vb applications to a database server.like accessing data from one database by different applications...
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Aug 11, 2010
recommended alternatives for speech recognition other than Microsoft Speech libraries?
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Apr 11, 2012
I am new to working with SQL databases (and databases in general) so I do not have a lot of experience with how queries work and how I can practice them. When I was first learning xml and XPath, I found XPath Visualizer incredibly helpful after someone on stack overflow mentioned it to me.Due to this, I am wondering if a similar tool exists for SQL databases?Basically a tool that will allow me to connect to a database,enter queries and see somehow what the results would be like.
I have looked online a bit, however I have found relatively few options in terms of any utility that would do what I want, and that looks reliable.I will ultimately be writing an application to interact with an SQL 2008 server in vb.net, however for now I am just experimenting so I will know what I am doing when I actually want to create my application.So far I have managed to connect to the database using an OLE DB connection, but I am now looking for a way to experiement with queries without just querying and figuring out a way to interpret the results in my program. Basically I want to be able to remove the programming aspect of things so I can experiment with queries without needing to question anything in my code that is unrelated to the specific query.
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Jul 24, 2009
Is there a way to, when a parent application is opened up, that at the click of a button, or anything of designated event, that this parent application can open a secondary one?
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Aug 7, 2011
PASTE ALL of this to your Form1 code window please and add one Button to Form1.
Now I am asking developers here who actually do software development for a living
especially those persons holding MCPD or similar Microsoft Certification please.
1) When redeclaring a method as in AnotherClass below which Inherits from ExampleClass,
is the recommnded way to use SHADOWS or OVERLOADS please? 2) What about when you do the same with a PROPERTY please?
Option Strict On
Option Explicit On
Option Infer Off
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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May 29, 2012
I found that when group by multiple values does not work well with VB.NET, but it works well with C# ,here are my code, is there something wrong with my VB.NET Code? Here is my VB.NET code:
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Feb 2, 2011
I have an application that requires data be entered, and after entering, a button is clicked to process that data. Clicking the button works just as it should--the data is processed properly. In constructing a test module, I provide a set of data values, followed by:
btnWhatever.PerformClick()
Nothing happens. I have used this syntax for years, and it has always worked flawlessly. I have triple checked everything else and isolated the problem to the failure of the PerformClick(). The PerformClick() is in a test subroutine that does nothing but fill textboxes and labels with default data, then calls the PerformClick() on the button to begin processing. Again, the button works fine, the data is entered as it should be, but the PerformClick() does not fire the click event.
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Aug 21, 2009
I have a form that works on my local Machine I created into. I have Office 2007 on this machine. I created the Form with the Excel 12 Reference. I move the Entire conetence of the Project folder to my work computer. Which has Office 2003. Do I need to recreate the form with the Excel 11 reference. I could not get the form to work on work computer. IT has a com error. I am acessing the EXE for the debug folder w/in the Bin Folder.
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Jan 27, 2010
IComparable(Of T) does not inherit from IComparable. after checking the documentation it doesn't say that its recommended or not recommended to implement IComparable as well if we have IComparable(Of T). so is it ok to implement IComparable(Of T) without implementing IComparable (and making it sync with IComparable(Of T)?
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Jan 23, 2012
I have all 66 books of the Bible in audio format. MP3 I believe. I want the users to have a choice of either reading the book of Romans or listening to it.
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Feb 28, 2010
I've tried to use this and I got all the errors gone but two
Private Sub buttonSaveAs_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buttonSaveAs.Click
If listViewTracks.SelectedIndices.Count > 0 Then
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