Continuous Read and Analyze Microphone Data
Recommended for grades 9–14.
Introduction
In this exercise, you will create a simple program using SensorDAQ’s Analog Express VI and the Spectral Measurements Express VI to continuously collect microphone data and continuously perform an FFT analysis on the data. A Fast Fourier Transform (FFT) is a mathematical algorithm commonly used in digital signal processing to determine the dominant frequencies in a complex waveform.
Objectives
In this experiment, you will
- Create a LabVIEW VI to continuously collect and analyze data.
- Incorporate LabVIEW Express Analysis functions.
- Use a While Loop to keep collecting and analyzing data until stopped by the user.
Sensors and Equipment
This activity requires each of the following Vernier sensors and equipment (unless otherwise noted):
Additional Requirements
You will also need a SensorDAQ interface and LabVIEW software for data acquisition.
Download Experiment Preview
The student-version preview includes:
- Step-by-step instructions for computer-based data collection
- List of materials and equipment
The preview does not include essential teacher information, safety tips, or sample data. We strongly recommend that you purchase the book for classroom use.
Standards Correlations
No standards correlations for this experiment.
Experiment 4 from Hands-On Introduction to NI LabVIEW with Vernier Lab Book
Included in the Lab Book
Vernier lab books include a CD with word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.