I have been all over this site looking at and trying example code, but none of it seems to work properly on my computer. I just want a simple program in VB.NET 2010 that can record a .wav file from my computer / line-in microphone. I am somewhat familiar with VB, but I still consider myself a novice and I don't really know all of the audio jargin. [URL]..
View 5 RepliesIm 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]
View 2 Replieshow to capture audio output with directsound? i'd want to be able to save it as .wav, .mp3, or .wma file format.
View 9 RepliesI have written a console app in <acronym title="Visual Basic">vb</acronym> .net 2003 to capture audio data (albeit not for an audio application) using the WinMM API. This works well in XP and also on my own Vista PC. However when others try to use in on Vista or Win7 it stops working after about 10 - 30 seconds (so it manages to initiate recording from the default input device but eventually stops). The only error given is "Program has stopped working". I am wondering if this is related to the way I recycle the input buffers?
View 13 RepliesI'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
[CODE]............................
I have this problem for some days now and i did not figure it out yet.When i use 2 buttons one for recording and one to stop recording is just fine, but when i use a timer to stop recording does not stop.
Here`s my First i have a button named start recording which calls the Public Sub record and enables timerRecordStop to TRUE.
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I am trying to record many small MP3 files from my computer's microphone. I know how to do this using mciSendString with the "Winmm.dll" to record .wav files. I need to record straight into the MP3 format from Visual Basic 2010.
View 1 RepliesI 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.
View 2 Repliesmake a VU meter for Audio to monitor audio input devices volume level such as microphone and etc?
View 7 RepliesI 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?
I've been trying, without any luck whatsoever, to figure out how to use the Core Audio API in VB 2010. I started by downloading a wrapper dll located here: [URL]
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Well how can I make an Audio Converter?
View 6 RepliesWhat I want to do, for one, is record audio through a microphone input, then play it back with only a few milliseconds delay. Maybe a way to do this would be to record, say, 200 milliseconds, save it to a temp folder, play it, then delete and repeat? I don't know. Would my idea work? Second, I want to use a VST dll file as an effect on this audio. I have absolutely no clue as to how I could do this. (Third one is optional, not really needed, but would be nice. you don't have to answer this third one) Third, I want to minimize the feedback. An idea of mine is maybe a frequency cut off, anything above avg human voice frequencies?
View 2 RepliesI was wondering what sorta code you would you to check if audio is going though a sound card?I am designing a media player and I would like to show that audio is playing.
View 4 RepliesWhat I need is an application that can have several audio files open up, which in turn can be routed to any of the audio output devices (e.g. external audio card channels). See the attached image for an illustration.
View 1 RepliesNeed to know if it is possible to use vb to either fade up or fade down the line in channel of the windows mixer in xp pro purely by system time. I can't find anything like this on the web.
Have a hospital radio setup that uses zararadio to schedule prerecorded material and live studio on a 12/24 7/7 basis to a non air audience. When off air the station rebroadcasts a local radio station sourced from an fm receiver.
The zara software can only switch the line in carrying the local station, it cannot crossfade or fade in/out and the twice daily transitions sound dreadful. The xp box and the software are synced to internet time twice daily so the timing errors are very small. Currently the zara software mutes and unmutes the line in as a timed event, accurate to the second.
I know how to read the system time and use it to drive an event, but have no knowledge of the windows mixer. I'm looking for maybe a 3 to 5 second fade at each twice daily transition. There is no requirement for user interaction and the code should auto run and survive a reboot.
Does VB 2010 offer native support for reading and modifying ID3 metadata in MP3 files? A brief search through MSDN shows me nothing, and I see someone says he had to write his own library of code for it. But that was some years ago, when you had to write code to access JPEG Exif metadata, and I know that's changed with the Image class and the GetPropertyItem method; so I'm hoping MP3 files have their own methods and properties now for this.
View 4 RepliesI'm playing an audio file like so:
VB.NET Dim audio As New Audio(Application.StartupPath & "est.wav", True) audio.Balance = 10000 audio.Play()
Which works great. But if I need to change that file, I get an UnauthorizedException because the I haven't disposed of it. But, if I add a dispose after .Play, it won't play.
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.
I am trying to capture a tv dvb-s signal via vb.net since a long time now.I have tried to get it work with the Microsoft examples, but no success till yet.I had success with analog tv tuning, but digital tuning is still far away, also I don't find any examples with dvb-s and vb.net or c#.
View 1 RepliesI have a problem with a Management.ManagementObjectCollection object. I can't use a For Each to go through its items, it tells that is not supported...
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I want to get the data coming from a weighing scale (rs232 signal) to a vb.net prgram, to a text box
View 1 RepliesIs it possible to send information to a BackgroundWorker thread while it is running? Here is my scenario: Parent thread calls background thread to send a data request to a database. If it's a big complicated query it can take a while for the db to respond, so putting the db request on the background worker thread is great. My app can do other stuff while the one thread waits for the db.
Now, db responds with beginning of data. I want my background thread to report back meta data about the result set to the parent thread. No problem there, I can use a custom user state object and the ReportProgress method. But now, how to I send a signal from the parent thread back to the worker thread? I want the background thread to wait while the parent thread does something, and then tells the worker thread to keep going or quit. I know how to cancel a background thread, but I want the parent to be able tell the child some information other than "cancel". Here's one way to think about it:
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I need some advises on showing digital signal indicator at this moment I use radio button...but it's then becoming complicated because I have to make them "true" or "false" anytime.
View 24 RepliesI need a walkthrough to :
1. Get a list of available usb ports
2. Send an output signal through the usb (if possible with variable intervals)
3. Close the usb port (so that no signal (current) comes out )
o I've had to reinstall both the .net and visual studios 2010 to get back to being able to program my game, yet this strange issue is still in existence...all of a sudden, like 4 hours prior to not being able to program anymore, I ran into the issue of my login form FRMlogin.vb not running upon clicking the button that sends you to its page... it will not show up for some unknown reason, and both me and my programming buddy cannot figure out what is going wrong here. I restarted my computer twice now since reinstalling visual studios 2010 express, and the same issue is here...here is the code for the forms
the play_b4.vb code
Public Class play_b4
Private Sub registered_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CMDregistered.Click
FRMlogin.Show()
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I want to get the wireless signal strength from adapter on Windows CE, VB.Net, Visual studio 2008.I believe opennetcf.net library has to be used.
View 2 RepliesI was wondering if there is an available script or code in VB that could measure the signal strength of routers. I need an actual number in decibels.
View 4 RepliesI'm newbie in VB and in my project I need a refresh loop to check an input usb board... everything runs well but I want a 100 ms refresh without button click needed[code]...
View 1 RepliesI would like to write a little application in VB.NET that will detect a baby's cry. How would I get started with such an application?
View 2 Replies