AudioRecording Help

aminnov

Hello,
When creating a voice application under reconnaissace QtCreator I want to add two buttons, one for voice recording of a microphone and one for stop and the voice is automatically saved in a .wav file I would like to know the source code and the library used to achieve this.
it's urgent
Thanks

SGaist

Hi and welcome to devnet,

QAudioInput is your friend.

aminnov

Thanx for reply
I am a beginner in QtCreator, I want a complete function for recording if possible, in order to call this function by the button in the application.
it's urgent please

Ratzz

@aminnov
Here is one example.

aminnov

Thanx for reply
I found a function in this site, and I paste in my code but an error servenu: QAudioInput :: No such file or directory?
I searched this problem but I have not solved.
the code is :

QFile outputFile;         // class member.
QAudioInput *audioInput;  // class member.
...
void startRecording()
{
    outputFile.setFileName("/tmp/test.raw");
    outputFile.open( QIODevice::WriteOnly | QIODevice::Truncate );
    QAudioFormat format;
    // set up the format you want, eg.
    format.setFrequency(8000);
    format.setChannels(1);
    format.setSampleSize(8);
    format.setCodec("audio/pcm");
    format.setByteOrder(QAudioFormat::LittleEndian);
    format.setSampleType(QAudioFormat::UnSignedInt);
    QAudioDeviceInfo info = QAudioDeviceInfo::defaultInputDevice();
    if (!info.isFormatSupported(format)) {
        qWarning()<<"default format not supported try to use nearest";
        format = info.nearestFormat(format);
    }
    audioInput = new QAudioInput(format, this);
    QTimer::singleShot(3000, this, SLOT(stopRecording()));
    audioInput->start(&outputFile);
    // Records audio for 3000ms
}

SGaist

Because you are missing QT += multimedia in your .pro file.

On a side note, asking on a community forum for someone to do the work for you because it's urgent for you isn't exactly professional. If you are in such a hurry then consider hiring someone with the expertise you need.