Example of the short-time Fourier transform of audio signals. Program plots real-time oscillogram and spectrogram of audio signal capturing the signal from an audio input device.

This program designed by using the Qt software framework version 5.4.

1. Download Qt Framework for Windows from http://www.qt.io/download/ (recommended the community version with major version 5)
2. Install Qt Framework on your system.
3. Open .pro file in Qt-Creator IDE and build the program.

1. If Qt is not installed on your system, install Qt. See the documentation on http://www.qt.io/.
2. Install Qt Creator (from software centre for Ubuntu)
3. Build program using Qt Creator.

NOTE:

• Install Qt Multimedia module in case of the error "Unknown module(s) in QT: multimedia"

  $ apt-get install libqt5multimedia5

• If program can't detect any audio-devices try to install Qt5 multimedia plugins

  $ apt-get install libqt5multimedia5-plugins

1. Download and install Qt for Android from http://www.qt.io/download/
2. Download and install JDK from http://www.oracle.com/technetwork/java/javase/downloads/index.html
3. Download and install Android SDK form http://developer.android.com/sdk/index.html
4. Install API version and USB driver for your Android device using android SDK manager
5. Download and install NDK from http://developer.android.com/tools/sdk/ndk/index.html
6. Download and install Apache ANT from http://ant.apache.org/bindownload.cgi
7. Configure Qt Creator (Tools -> Options -> Android)
8. Open project in Qt Creator and build a packet (apk) according to your version of ABI.

NOTE: you can download binary files of the program from distr directory.