Microphones

Microphones

1. Uses

   • Phones
   • Public Address Systems
   • Hearing Aids
   • Input sound in a computer
     • Voice Recognition Systems
     • Speech to text typing

2. A microphone is a device that captures audio by converting sound waves into an electrical signal.

   • This signal can be amplified as an analog signal
   • or may be converted to a digital signal, which can be processed by a computer or other digital audio device

3. A type of transducer

4. Either built into the computer or are external devices connected through a USB port or bluetooth

5. Process

   • When a sound is detected, a diaphragm vibrates
     • Electric signal is produced
       • Signal goes to a sound card and is converted into digital values
         • Stored digitally in the computer
   • The process is slightly different for voice recognition systems
     • A users voice is detected and converted into a digital format
       • Stored as a wave pattern
         • This wave pattern is compared to prexisting wave patterns stored in the computers memory so that the computer can comprehend what a person is saying