Record sounds from speaker in silverlight wp7 - windows-phone-7

Question

I need to record different sounds in a file. the file may be .mp3, .wav etc. how it is possible in windows phone 7?

Answer 1

There is a simple way to do this in Windows Phone. You are basically using the Microphone class provided by the framework. For a great article on the topic go to http://msdn.microsoft.com/en-us/magazine/gg598930.aspx
void OnRecordButtonClick(object sender, RoutedEventArgs args)
{
if (microphone.State == MicrophoneState.Stopped)
{
// Clear the collection for storing buffers
memoBufferCollection.Clear();
// Stop any playback in progress (not really necessary, but polite I guess)
playback.Stop();
// Start recording
microphone.Start();
}
else
{
StopRecording();
}
// Update the record button
bool isRecording = microphone.State == MicrophoneState.Started;
UpdateRecordButton(isRecording);
}
void StopRecording()
{
// Get the last partial buffer
int sampleSize = microphone.GetSampleSizeInBytes(microphone.BufferDuration);
byte[] extraBuffer = new byte[sampleSize];
int extraBytes = microphone.GetData(extraBuffer);
// Stop recording
microphone.Stop();
// Create MemoInfo object and add at top of collection
int totalSize = memoBufferCollection.Count * sampleSize + extraBytes;
TimeSpan duration = microphone.GetSampleDuration(totalSize);
MemoInfo memoInfo = new MemoInfo(DateTime.UtcNow, totalSize, duration);
memoFiles.Insert(0, memoInfo);
// Save data in isolated storage
using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream stream = storage.CreateFile(memoInfo.FileName))
{
// Write buffers from collection
foreach (byte[] buffer in memoBufferCollection)
stream.Write(buffer, 0, buffer.Length);
// Write partial buffer
stream.Write(extraBuffer, 0, extraBytes);
}
}
// Scroll to show new MemoInfo item
memosListBox.UpdateLayout();
memosListBox.ScrollIntoView(memoInfo);
}