Speech Signal Playing Based on MATLAB GUI
In recent years, with the continuous development of digital signal processing technology, speech signal processing has become a hot research field. As a powerful mathematical software, MATLAB provides a wealth of toolboxes and functions that can be used in all aspects of speech signal processing. Combined with the GUI design function of MATLAB, we can develop a simple and practical voice signal player. This article will introduce how to use MATLAB GUI to design the interface, and demonstrate how to realize the playback function of the voice signal through the source code.
First, we need to prepare a voice signal file, which can be in .wav format or .mp3 format, etc. In this example, we select the file in .wav format and name it "speech.wav". Make sure the file is in the same folder as the GUI file in the MATLAB working directory.
Next, we use MATLAB's GUIDE (GUI Development Environment) tool to create a GUI interface. Open the MATLAB command window and enter the following command:
guide
This will start the GUIDE tool. In the pop-up dialog box, select "Blank GUI" and click the "OK" button. This will create a blank GUI interface.
In the toolbox on the left side of the GUI interface, you can find various controls and components, such as buttons, text boxes, sliders, etc. We will use the button control as the play button for the speech signal.
- In the toolbox, select the "PushButton" control and drag it to a suitable position on the GUI interface.
- Click the button, then change the button's "String" property to "Play" in the property editor.
- Next, change the button's "Tag" property to "playButton". This will be used later in the code.
Now, we need to write some MATLAB code to implement the playback function of the speech signal. The following is the complete MATLAB source codeÿ