Introduction
In this article, we will discuss how to create an audio meter or spectrum analyzer using the Mitov AudioLab library in Delphi. The focus of this article is on using the systems default audio as the input for the audio meter or spectrum analyzer.
Prerequisites
To follow along with this article, you will need to have Delphi installed on your computer, as well as the Mitov AudioLab library. You can download the Mitov AudioLab library from the Mitov Software website (https://www.mitov.com/products/audiolab).
Creating an Audio Meter
To create an audio meter using the Mitov AudioLab library, you will need to create a new Delphi project and add the Mitov AudioLab component to the form. Once you have done this, you can use the following code to configure the component to use the systems default audio as the input:
AudioLab1.DeviceName := 'Default';
AudioLab1.Start;
After configuring the component, you can use the AudioLevel property of the component to display the audio level. For example, you can use the following code to display the audio level in a label:
Label1.Caption := FloatToStr(AudioLab1.AudioLevel);
Creating a Spectrum Analyzer
To create a spectrum analyzer using the Mitov AudioLab library, you will need to create a new Delphi project and add the Mitov AudioLab component to the form. Once you have done this, you can use the following code to configure the component to use the systems default audio as the input:
AudioLab1.DeviceName := 'Default';
AudioLab1.Start;
After configuring the component, you can use the Spectrum property of the component to access the frequency spectrum of the audio. For example, you can use the following code to display the frequency spectrum in a TChart component:
Chart1.Series[0].Clear;
for I := 0 to AudioLab1.Spectrum.Length - 1 do
Chart1.Series[0].AddXY(I, AudioLab1.Spectrum[I]);
In this article, we have discussed how to create an audio meter or spectrum analyzer using the Mitov AudioLab library in Delphi. We have covered the key concepts of using the systems default audio as the input for the audio meter or spectrum analyzer, and have provided detailed code examples to help you get started.
References
- Mitov AudioLab library documentation: https://www.mitov.com/products/audiolab/documentation
- Delphi programming language documentation: https://docwiki.embarcadero.com/RADStudio/en/Main_Page