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Modems. Analogue to Digital Conversion is the way of converting a continous analogue signal to a series of digital binary numbers. This is done in many pieces of hardware

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Introduction

Analogue to Digital Conversion Matt Davey Analogue to Digital Conversion is the way of converting a continous analogue signal to a series of digital binary numbers. This is done in many pieces of hardware by taking samples of the analogue signal and then each sample is digitised into a binary code by a microchip. This process is known as Quantization a process where a continuous signal is converted to a series of points at discrete levels. ...read more.

Middle

The analogue wave is created by vibrations in the sound the waveform today is usually recorded into digital format by an Analogue Digital Converter (ADC). The Waveform is turned into a stream of numbers and the ADC records the numbers and feeds them through the speakers. In the computer world a modem is commonly used to connect to the largest Wide area network the internet. ...read more.

Conclusion

All ADCs work by sampling their input at intervals of time. Their output is an incomplete picture of the of the input. There is no way of knowing, by looking at the output, what the input was doing between one sampling instant and the next. If the input is known to be changing slowly compared to the sampling rate but if the analogue input changes quickly the digital sample with miss it and will be incorecct. ...read more.

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