Sound sensor (dB, frequency and air pressure)

BT80i-sound-sensor.
BT80i-sound-sensor-with-students

Sound sensor (dB, frequency and air pressure)

Item nr. BT80i Category
The sensor measures variations in air pressure in the measurement range between -45 and 45 Pa caused by a sound wave. Because of the high sensitivity, the sensor is very much suited to detect short pressure pulses. This offers the possibility to measure the speed of sound.
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Description

The Sound Sensor consists of a microphone followed by an amplifier. It can used to measure dB, frequency and air pressure.
The sound sources that can be used to measure frequency are tuning forks, electronic keyboards, and musical instruments. You may also investigate a human voice or a whistle. The sensor can also be used for dB-measurements.

Technical specifications:

  • Frequency range: 20 Hz .. 20000 Hz
  • Sound level range: 40 .. 130 dB
  • Air pressure range: -45 .. 45 Pa (0.45 mbar)
  • Required: One sensor cable (BTsc_1 or BTsc_1Short)
  • Warrantee: 3 years

All technical specifications of the sensor are described in the product manual, see downloads.

The sound sensor can be used in a variety of experiments with sound waves such as:

  • Measure wave patterns (frequency and amplitude of sound)
  • Measure the speed of sound through air and other materials
  • Compare waveforms from various musical instruments
  • Study beat patterns
  • Display the Fourier transform (FFT) of a sound

Additional information

Weight 0,099 kg

Product manual

Download

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