It is a small microphone with an omnidirectional characteristic.
a Sound Pressure Level Meter is used to measure sound levels.See related link.
- Microphone
"A sound meter measures the pressure of sounds. It is used in measuring the amount of noise pollution, such as aircraft noise. The sound meter does not measure the amount of sound that humans hear. There is a different type of meter used for this."
"Microphone" is a common noun because it refers to a general type of device used to capture sound.
Type in sound recorder into google and download one!!!
I would use the type of microphone that most people use in announcements, because it projects the sound better, as it is round. For concerts, I would recommend the cylinder shaped ones because the sound is amplified better.
The decibel scale is a logarithmic scale. Scroll down to related links and look at "Decibel - Wikipedia" and "Sound level meter - Wikipedia".
The HP 6000 laptop has a built in microphone that works well, but is not best for recording the most crisp sound recordings. You should consider buying an external microphone if you want really good sound.
joystick and microphone
BBC-Marconi Type A microphone was created in 1934.
A microphone is a transducer of energy from one form to another. It takes sound waves or acoustic energy and then converts it into an audio signal or electrical energy. A microphone is used is speaking appearances to amplify what someone is trying to say to a large crowd.
A microphone would considered an input device.