Product Summary
The Sound Level Sensor is designed to measure the intensity level of sound sources within proximity to the sensor. The sensor features three range switches to match the intensity range of the measured phenomena.
The sensor measures sound level in both the dBA and dBC scales. The dBC scale includes all frequencies incident on the Sound Level Sensor, whereas the dBA scale filters out some frequencies to more closely match the frequency response of the human ear.
The sensor also reports a measurement of sound intensity in μW/m2, which is calculated from the dBC measurement of the sound level.
Applications
- Explore sound levels outside the classroom
- Discover the logarithmic relationship between sound level and sound intensity
Product Specifications
| Range | 30 to 110 dB; 0.001 to 10,000 μW/m2 |
| Max Sample Rate | 20 Hz |
| Accuracy | ±2 dB at 94 dB (1000 Hz) |
| Resolution | 0.1 dB |
Data Collection Software
This product requires PASCO software for data collection and analysis. We recommend the following option(s). For more information on which is right for your classroom, see our Software Comparison: SPARKvue vs. Capstone »
Interface Required
This product requires a PASCO Interface to connect to your computer or device. We recommend the following option(s). For a breakdown of features, capabilities, and additional options, see our Interface Comparison Guide »
Experiment Library
Perform the following experiments and more with the PASPORT Sound Level Sensor.
Visit PASCO's Experiment Library to view more activities.
Elementary / Elementary Science
This lab helps students recognize that continuous sound is made by vibrating objects, and can be described using pitch and volume. Students will also explore continuous sounds with changing volumes.
High School / Physics
Create a musical instrument that plays the frequencies of all 8 notes of a major scale, has working parts consisting of metal bar (or tube) with lengths less than 1 m, and has a total mass of less than 5 kg.
Elementary
In this lab, students use a sound level sensor to measure the sound levels from different objects. Students will determine the sound sources, and determine the relationship between vibrations and sound level.
High School / Physics
In this lab, students will use sound level sensors to investigate the sound intensity from devices such as tuning forks, musical instruments, and the human voice.
