what device Id are you passing in?
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New Post: BadDeviceId calling waveInOpen when running NAudioTutorial5
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New Post: Repeated Start/StopRecording does not work
OK, might be something strange going on with the emulated soundcard then. You ought to be able to do both at once.
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Source code checked in, #4b03a028f309
some code cleanup, removing half-complete GUI controls, marking some others as obsolete
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Source code checked in, #920e758340dc
removing some unused controls
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New Post: How receive sysex?
Mark please can please publish some code exmaple about how pikcup sysex events?
I wnat receive sysex, no send.
Best regards!
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New Post: WaveOutEvent stops playing sound after some hours of playing
Sorry for delay. it's a little time consuming to catch the problem because it happens after lots of hours.
I did some tests. The PlaybackThread in WaveOutEvent is still alive, but the Read function of BufferedWaveProvider doesn't call.
I write my initialization code, may it helps:
BufferedWaveProvider waveProvider; WaveFormat wf = new WaveFormat(8000, 16, 1); waveProvider = new BufferedWaveProvider(wf); waveProvider.DiscardOnBufferOverflow = true; WaveProviderToWaveStream wpws = new WaveProviderToWaveStream(waveProvider); WaveOffsetStream wos = new WaveOffsetStream(wpws); waveChan32 = new WaveChannel32(wos); WaveMixerStream32 mixer; mixer = new WaveMixerStream32(); mixer.AutoStop = false; mixer.AddInputStream(chan);
I just should say that I add about 30 waveProvider in my mixer and the Read function of none of them will call after this problem.
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New Post: Playing multi-channel audio from WAV file using Naudio
I'm fairly new to NAudio and I'm trying to load audio channels from a WAV file into WaveStreams and display each of those channels in its own WaveViewer.
How can I go about this ? Thanks !
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New Post: WaveOutEvent stops playing sound after some hours of playing
I found a new thing. When the problem occurs, the Read function of WaveMixerStream32 is calling but the Read function of WaveChannel32 (which should call from WaveMixerStream32) is not calling. Before the problem, it calls correctly.
Please help
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New Post: Corrupt WAV header
Hi im trying to create a 24-bit WAVE file following the last example given by Mark here:
Sound Code: How to Use WaveFileWriter
The wave data generates as it should by the loop, but the resulting wavfile is only OK to open in VLC, all other programs flags for corrupt wave file header. (WaveLab 6, MediaPlayer, Quicktime, etc.)
Any suggestions why the header could be corrupt? (this is true for both 16/24-bit wave files)
Regards Jonas
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New Post: Detect which input device has audio
Hello,
I'm writing a program that reads from line-in device. However, some computers only have a mic port. Moreover, if there are two ports, a person may by mistake plug into the mic port instead of line-in port. I want my program to be resilient and read wave data from the device where there is music data coming in. How can I do that ? I guess I need to do silence detection. How would I do that ? This is my sample code:
private void on_data(object sender, NAudio.Wave.WaveInEventArgs e) {
if (waveWriter == null) return;
waveWriter.WriteData(e.Buffer, 0, e.BytesRecorded);
waveWriter.Flush();
}
Somewhere in this code I have to do silence detection.
Is there any other way to solve this, without doing silence detection? Does NAudio have some filters that I could use out of the box?
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New Post: Control volume of two mp3 files
Hello Mark,
thank you for creating this avesome possibility to play audio files.
I am currently working on a project that has to "fade" between two mp3 files. To accomplish that I created an array of two WaveOut´s in order to play the two files simultaneously and increase the volume of the first WaveOut respectively decrease the volume of the second.
Obviously I misunderstood the use of WaveOut - Setting the volume of one of the WaveOut-Objects leads into changing the "master"-volume of the program.
Is there any way to change the volume of the "streams" ?
This is my current code (VB 2010):
Option Strict Off Option Explicit On Imports Microsoft.Win32 Imports NAudio Imports NAudio.Wave Module globPlayFile Public Player(2) As WaveOut Public Stream(2) As WaveStream Public volumeStream(2) As WaveChannel32 Public inputStream(2) As WaveChannel32 Public mainOutputStream(2) As WaveStream Public Function MP3_Play(ByVal sFile As String, ByVal sIndex As Short) As Boolean 'On Error Resume Next If Not Player(sIndex) Is Nothing Then Player(sIndex).Dispose() Player(sIndex) = Nothing End If If Not Stream(sIndex) Is Nothing Then Stream(sIndex).Dispose() Stream(sIndex) = Nothing End If mainOutputStream(sIndex) = CreateInputStream(sFile, sIndex) Player(sIndex) = New WaveOut() Player(sIndex).Init(mainOutputStream(sIndex)) Player(sIndex).Play() End Function Private Function CreateInputStream(ByVal fileName As String, ByVal sIndex As Short) As WaveStream Stream(sIndex) = New Mp3FileReader(fileName) inputStream(sIndex) = New WaveChannel32(Stream(sIndex)) volumeStream(sIndex) = inputStream(sIndex) Return volumeStream(sIndex) End Function Public Sub MP3_SetVolume(ByVal sIndex As Short, ByVal nVolume As Single) 'On Error Resume Next If Not Player(sIndex) Is Nothing Then Player(sIndex).Volume = nVolume End If End Sub End Module
Now I am using a timer to increase the volume of one WaveOut (via MP3_SetVolume) while deresing the volume of the other one.
Thank you in advance!
Greetings from Germany!
Sebastian
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New Post: Control volume of two mp3 files
Hi,
I am getting closer. Another discussion entry gave me the idea of changing the Volume on the input streams. Now I can handle the volume of the two MP3-files seperately.
Unfortunately this brings me to another Problem: When I init the second WaveOut, I get a short mute on all other playing MP3-Files. This delay is just a split second but you can hear the short moment of silence.
Any idea how to remove this error?
Thank you in advance!
Sebastian
Imports NAudio Imports NAudio.Wave Public Class Form1 Public Player(2) As WaveOut Public Stream(2) As WaveStream Public volumeStream(2) As WaveChannel32 Public inputStream(2) As WaveChannel32 Public mainOutputStream(2) As WaveStream Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click OpenFileDialog1.Title = "Choose MP3 file to play!" OpenFileDialog1.ShowDialog() End Sub Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click OpenFileDialog2.Title = "Choose MP3 file to play!" OpenFileDialog2.ShowDialog() End Sub Private Sub Button3_Click(sender As System.Object, e As System.EventArgs) Handles Button3.Click Player(1).Play() Button3.Enabled = False Button5.Enabled = True End Sub Private Sub Button4_Click(sender As System.Object, e As System.EventArgs) Handles Button4.Click Player(2).Play() Button4.Enabled = False Button6.Enabled = True End Sub Private Sub Button5_Click(sender As System.Object, e As System.EventArgs) Handles Button5.Click If Not Player(1) Is Nothing Then Player(1).Stop() Player(1).Dispose() Player(1) = Nothing End If If Not Stream(1) Is Nothing Then Stream(1).Dispose() Stream(1) = Nothing End If If Not volumeStream(1) Is Nothing Then volumeStream(1).Dispose() volumeStream(1) = Nothing End If If Not inputStream(1) Is Nothing Then inputStream(1).Dispose() inputStream(1) = Nothing End If If Not mainOutputStream(1) Is Nothing Then mainOutputStream(1).Dispose() mainOutputStream(1) = Nothing End If Button5.Enabled = False Button1.Enabled = True End Sub Private Sub Button6_Click(sender As System.Object, e As System.EventArgs) Handles Button6.Click If Not Player(2) Is Nothing Then Player(2).Stop() Player(2).Dispose() Player(2) = Nothing End If If Not Stream(2) Is Nothing Then Stream(2).Dispose() Stream(2) = Nothing End If If Not volumeStream(2) Is Nothing Then volumeStream(2).Dispose() volumeStream(2) = Nothing End If If Not inputStream(2) Is Nothing Then inputStream(2).Dispose() inputStream(2) = Nothing End If If Not mainOutputStream(2) Is Nothing Then mainOutputStream(2).Dispose() mainOutputStream(2) = Nothing End If Button6.Enabled = False Button2.Enabled = True End Sub Private Sub OpenFileDialog1_FileOk(sender As Object, e As System.ComponentModel.CancelEventArgs) Handles OpenFileDialog1.FileOk mainOutputStream(1) = CreateInputStream(OpenFileDialog1.FileName.ToString, 1) Player(1) = New WaveOut() Player(1).Init(mainOutputStream(1)) Button3.Enabled = True Button1.Enabled = False End Sub Private Sub OpenFileDialog2_FileOk(sender As Object, e As System.ComponentModel.CancelEventArgs) Handles OpenFileDialog2.FileOk mainOutputStream(2) = CreateInputStream(OpenFileDialog2.FileName.ToString, 2) Player(2) = New WaveOut() Player(2).Init(mainOutputStream(2)) 'This leads into the short silence on the track playing on Player(1) Button4.Enabled = True Button2.Enabled = False End Sub Private Function CreateInputStream(ByVal fileName As String, ByVal sIndex As Short) As WaveStream Stream(sIndex) = New Mp3FileReader(fileName) inputStream(sIndex) = New WaveChannel32(Stream(sIndex)) volumeStream(sIndex) = inputStream(sIndex) Return volumeStream(sIndex) End Function Private Sub TrackBar1_ValueChanged(sender As Object, e As System.EventArgs) Handles TrackBar1.ValueChanged If Not inputStream(1) Is Nothing Then Dim tmpVolume As Single tmpVolume = TrackBar1.Value / 100 inputStream(1).Volume = tmpVolume End If End Sub Private Sub TrackBar2_ValueChanged(sender As Object, e As System.EventArgs) Handles TrackBar2.ValueChanged If Not inputStream(2) Is Nothing Then Dim tmpVolume As Single tmpVolume = TrackBar2.Value / 100 inputStream(2).Volume = tmpVolume End If End Sub End Class
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New Post: Understand if someone (human) is speaking in real time
Hi,
i wanna know if is possible to understand if someone (human) is speaking in real time with NAudio?
Is it possible using "waveIn" with NAudio 1.4?
Thanks a lot,
Enrico
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New Post: Multiple WaveOut Objects
Hi dj,
how did you build the timeline component? Do you render the waveform for each seperate audio file first?
Regards,
Per
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New Post: Multiple WaveOut Objects
percramer wrote:
Hi dj,
how did you build the timeline component? Do you render the waveform for each seperate audio file first?
Regards,
Per
Per - I built a custom reusable control (timeline obj). Since my app isn't an audio app and it's memory intensive for other objects, I had to limit the amout of memory used for audio and waveform data by sampling larger chunks. The control takes a list of audio peaks (ints) in it's constructor and renders these in the control's paint method. Depending on the zoom level, there is a calculation done to determin the X location of the line in a loop.
Rendering (painting) waveform data uses a lot of memory so it's also important to note that the render loop has a check for visablity. Since the list of ints is in order, you can exit the loop after you reach a point where the line location is out of bounds of the viewable area of the control.
Hope this helps,
Dj
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New Post: Understand if someone (human) is speaking in real time
hi Enrico, I've answered your question over at stack overflow
Mark
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New Post: Detect which input device has audio
this is a similar question to this one. The basic answer is that you would analyse the audio in short blocks, calculating a decibel level. You probably shouldn't detect for perfect silence (which would be all samples zero), but you could check that a block of audio for say 20ms didn't go over a set threshold.
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New Post: Control volume of two mp3 files
that's strange. Could it be the garbage collector kicking in momentarily perhaps? An alternative approach is to have just one WaveOut and mix the MP3s to be sent to it in software. This is a more complicated solution in terms of code though.
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New Post: G729 Support
NAudio can use whatever ACM codecs are on your system, if you use the correct WaveFormat header in conjunction with WaveFormatConversionStream. You can use the NaudioDemo application to look at what codecs are installed.
Mark
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New Post: Windows 8 WinRT Metro Style Support
hi Tom,
I do accept patches but please read these notes about submitting patches. NAudio currently builds against .NET 2.0, and maintaining backwards compatibility is important. There would only be a certain subset of NAudio that would apply with WinRT in any case, so I could imagine a separate project just bringing in fewer files might be possible. I have got VS2012 installed on my dev PC myself now, so I may get the chance at some point to experiment with how WinRT and NAudio can be combined.
Mark
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