Tech Info Library

Microphone Troubleshooting and FAQs

Microphone, order code MCA-BTA, $39
Specifications and User Guide

- Primary Test: The easiest sound source to use with the Microphone is a tuning fork, but you may want to investigate a human voice or a whistle, electronic keyboards, and other musical instruments. Make sure the sound level is in the correct range to produce good wave patterns. If the sound is too loud, the wave pattern will be clipped at the top or bottom. Move the microphone further from the sound source, or turn down the volume of the sound.

An inexpensive keyboard set to the flute sound, without vibrato, is the best source; you can easily do both beats and pure tones of varying pitch.

-TIL 656: What are the units (of pressure) for the microphone?
-TIL 662: What is the best procedure to get a clean sine wave when using a tuning fork with the microphone?
-TIL 1194: What is the best sound to use for the speed of sound experiment?
-TIL 1231: Can I use Logger Pro as an oscilloscope?
-TIL 726: Is there a problem using an MPLI microphone with LabPro?
-TIL 2310: How do I use LabQuest to measure the frequency of sounds?
-TIL 2436: LabQuest (original) and LabQuest Mini: Readings from my Vernier Microphone are very noisy.
-TIL 2737: LabQuest 2: Readings from my Vernier Microphone are very noisy.
-TIL 1215: Why does the speed of sound experiment in Physics with Computers not work in LP 3?
-TIL 2119: LabQuest App does not trigger properly with a microphone.

- new order code: MCA-BTA
- old order code: MCA-ULI (ULI only)
- Frequency range: approximately 100 Hz to 15 kHz. The maximum data-collection rate of the interface affects the maximum frequency you can effectively sample. With the LabPro or CBL 2, the maximum sound source is 5,000 Hz. With the CBL or ULI, the maximum sound source is 1,000 Hz.

- Calibrate? No. The sensor is set to the stored calibration before shipping.

Sound Level Meter, order code SLM-BTA, $199

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