Keep in mind, that I made this tutorial video a few years ago with an older version of LabVIEW, but the overall process is still the same. It will help the project come together more easily for you. Prepare by Watching the Video Tutorialīefore you jump into the project, I recommend that you take a few minutes to watch this tutorial. We’ll then be able to output the audio to a listening device, such as headphones. By the end of the project, we’ll be able to plug a 3.5 mm cable from an audio device (such as your phone) into the myDAQ and process the audio. You’ll need to make sure you have the DAQmx drivers installed. To complete this project, you will need to have LabVIEW installed and an NI myDAQ for data acquisition. Getting Started: Creating EQ with LabVIEW The low frequency “band” might affect 30 – 200 Hz, for instance. For instance, our 3-band EQ will have 3 sliders that will control the intensity of the low, mid, and high frequencies separately. A “band” refers to the spectrum of frequencies that are altered by a specific controller. We will be making a 3-band graphic equalizer. Some graphic EQs have a small number of “bands” and others have many bands. It is one of the most widely used forms of audio processing in both digital and analog sound production. A graphic equalizer (EQ) is, in less scientific terms, a device that takes in audio input and can alter specific frequency intensities of a sound wave and output the altered wave.
In this post, I’ll provide a step-by-step series of instructions on how to create a graphic equalizer in LabVIEW 2017. Together NI LabVIEW & myDAQ have infinite possibilities.