Adding a description for the Spectrum Analyzer demo. For QTBUG-12180

Reviewed by: David Boddie

1 files changed, 39 insertions, 0 deletions

diff --git a/doc/src/demos/spectrum.qdoc b/doc/src/demos/spectrum.qdoc
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+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in a
+** written agreement between you and Nokia.
+**
+** GNU Free Documentation License
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of this
+** file.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \example demos/spectrum
+    \title Spectrum Analyzer
+
+This application is a demo which uses the QtMultimedia APIs to capture and 
+play back PCM audio.  While either recording or playback is ongoing, the 
+application performs real-time level and frequency spectrum analysis, 
+displaying the results in its main window.
+
+
+*/
+