microphones o levels, Study notes of Computer science

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Microphone: A microphone is an input device used to enter sound into a computer. The sound can be used for e Voice over for a presentation * Voice recognition for security system e Speech recognition for speech-to-text software e For disabled person How it works Microphone consists of a flexible diaphragm, a circuitry and an ADC (Analogue to Digital Converter). The diaphragm vibrates due to incoming sound waves. This vibration causes change in electrical signals of connected circuitry. The electrical signal has to be converted to a digital signal by an analogue-to-digital converter before it can be processed by a sound (audio) card inside the computer. How recorded sound is converted into digital audio file Waves diaphram Analog signals ps os ADC in sound card Processor A microphone converts sound waves into voltage changes. This voltage can be sampled at regular intervals (the sample rate) ADC converts it into a binary number.