I 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 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 windows app i want to disable the sound card and enable the sound card by using command button
View 2 RepliesI would like to be able to measure the frequency of a sine wave applied to the input of a "standard" Windows sound card system.I need to do this in near real-time (not by analyzing a wav file after the event) and I need to continuously measure every half-cycle of audio and store the results in some kind of buffer that I can read into a VB app. I have tried googling for this and it seems to be a very popular question but I have not found any really good answers. Does anyone know of a DLL that could do this? I wouldn't mind paying a reasonable sum for a commercial DLL if there is such a thing.
Another related requirement is to generate sine-waves - again this must be done in near real-time and it must be possible to change each half-cylce of the waveform. For example,I might need to generate a few half-cycles of 1500 Hz to be followed (with no break in the waveform) by half-a-cycle of 2300 Hz.
Is it possible to capture the raw signal from a WiFi card in the same way you can capture the signal from a sound card? (I already found code for working with a sound card and for drawing spectrograms) I'm wondering because it would make a cool radio-type project. I'd prefer a solution that integerates well with .net (VB or C#).My basic goal is to capture the ambient radio waves and build a primative "telescope" of sorts. Using the built in computer hardware is just the easiest way to accomplish this. If you have any other suggestions about how to accomplish this goal in a different way please post it as an answer also.
View 1 RepliesI need to get the decibel level of sound being sent to the sound card (not the actual sound level the speakers are instructed to emit via volume level)There is next to no information i can find on the net to even access sound data. Could anyone point me in a direction for this? The OS will be vista/7.
View 2 RepliesIs there a way to generate a pure tone (e.g. 440 Hz) for a specified period of time through the sound card without using having to find or make a separate .wav file for each tone.I tried using the "Beep" function, but while it produces the tone for a specified period, it sounds broken up into a (probably 500ms) time frame which repeats with an audible space between the repetitions.
View 2 Replieshow to record sound from sound card ?
View 1 Repliesi am doing a final project in vb.net.i need to know how can i take and receive data from a sound card.
View 2 RepliesI'm currently trying to get around developing an application that will alert me when process X is using my sound card.
View 2 RepliesI need a way of recording any sound that is played through the computer so say if the user was open up windows media player and play a song then he could click record on my application and it would capture whatever is being played. After that there would also need to be a save button so the can click save and the user can save the file as a .wav or .mp3 or whatever!
View 6 Replieshow to check if
- A specific sound card is in use;
- A specific process is using any sound card;
- A sound card's current volume output
This is a short program that I am trying to make work. I have a database that has 2 fields
1) Text
2) OLE Object - Audio.wav
I know that the My.Computer.Audio.Play Uses a Filepath, but I want to use the Audio.wav OLE Object inside my DataBase to make the sound. When I compile the program I get that Conversion from type 'Byte()' to type 'String' is not valid.
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How can I find the mixer handle for a specific sound card?I'm trying to build an application that will control the sound mixer of a specific sound card but I'm completely stuck in the getting the handle part.
View 6 RepliesI'm searching for an Audio/Sound monitoring sample code. What it does is it meters the sound coming out of the computer.
View 3 RepliesI would like to create a visualizer for the windows system audio. I'm looking for a way to sample the loudness of the sound currently being played. I don't need the actual sound unless required for computing the sound levels. My goal is to create something similar to the bouncing green level found on windows 7's volume control.
View 1 RepliesI want to build a system that will take the input from an electric guitar and capture the frequency of the sound. and when the frequency is captured, the system identify the chord, and create new controls to represent the audio frequency. i want to use the label as the controls. so when the controls is created, how can i know that the user is click on what label. is there something like label1.click in vb 2005 express? then when the label is all created, i want the system to read all the labels integer as the sound of midi. so i have to assign what integer for what sound.
View 2 RepliesI'm ready to start adding sound to a 3D game and I'm looking for a decent Free library.it would not require DX and be something like:
dim MySound as SoundLib.Sound
MySound = SoundLib.LoadSound("soundfile.wav")
SoundLib.Play3DWorld(Location.X, Location.Y, Location.Z, VolumeModifier, MySound)so far all Im finding is expensive, C#, old, or not .NET compatible.
I'm creating an application that will have 3 streams of audio. I can get 2 streams playing easy enough using DirectX AudioVideoPlayback and setting the balance for each Audio Instance. However, I need a 3rd Audio instance to play out of another output such as the Rear or Centre. An alternative would be to be able to select a different sound device in the machine to play the 3rd audio stream.
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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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I have a text box on a form. It is a masked text box that shows in the format XX/XX.It is used for the expiry date of a credit card.What I need to do is how to take a value like 08/11 which means August, 2011 and check that it is in the future.For example something like 08/09 would be last year and hence would be invalid.Is there any way to take this string and check?
View 3 RepliesI want to create an application that can detect usb card reader device and when i swipe the card it should read.The below code WORKS PERFECTLY IN VB.But when i converted it to vb.net it is showing some problem.Below is the code for that.
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i want to read data from smart card using card reader.i need vb.net code help as well as total process that mean what dll/exe will be needed and how can i determine that the card is inserted or ejected from card reader?
View 3 RepliesI am trying to make a basic ATM system, iv got all the interface done and I have made the link to my SQL database etc. the part i'm stuck on is how I can run a check to see if a bank card number matches up to the users PIN number. To simulate the user putting a card into the machine I've used a combo box, and that lists all the cards, that haven't been flagged as confiscated (there's a column in my ATMCards table that I can set to true or false) then after the user has selected a relevant card there's another text box where they can enter in their PIN number.
Now what I want to do is, if they chose the card number 1234567890123456 in the combo box and they enter in the PIN 1234 into the text box, then, after clicking the check PIN Button if the pin is correct they need to be taken to another from where they can check their balance etc., and if its wrong they got three attempts after which point i want to flag that card as confiscated.
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.
View 2 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 RepliesI have a program that I wrote in vb 2010 that keeps track of employee times in a database. It figures hours worked based on a range of dates selected using two DateTimePickers.I have it successfully working at this point to figure hours worked per day in the range for it's current practical use. But I was wanting to extend it so that it would handle over night shifts properly in case they did ever occur.Right now my code looks like this and it works for my current application:
vb
Public Sub ConvertTimesTableToHoursTable(ByVal timesTable As DataTable, ByVal hoursTable As DataTable)
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make 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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