what is inside a digital processor?

1)Input lowpass filter (anti-aliasing filter) – Analog input signal is filtered to be a band-limitedsignal by an input lowpass filter.

2)Analog to digital converter (ADC) – Signal is then sampled and quantized by an ADC

3)Digital computer or digital signal processor – Digital signal is processed by a digital circuit, often acomputer or a digital signal processor.

4)Digital to analog converter (DAC) -Processed digital signal is then converted back to ananalog signal by a DAC


5)Output lowpass filter (anti-imaging filter) – The resulting step waveform is converted to asmooth signal by a reconstruction filter called ananti-imaging filter.

How does Dsp works?

First , the sensor will pick up signal from the physical world. e.g. Sound , light.

Afterward , the signal will be converted to voltage waveform by signal conditioning so that it can digitised by an A/D converter.

It then passes through the anti-aliasing filter . It is to prevent the high frequency component from causing aliasing during the sampling process.

The signal will now go through the

Analog to digital converter (ADC) so that it can be read by Digital Processing.

Now the signal would be at Digital Processing.

The signal then go through the Digital to Analog converter (DAC) so that it can be read by Anti-imaging filter.

Lastly, the signal will pass through the anti-imaging filter so that it can be constructed to be a smooth analogue signal , very much like the signal that was

Goal of Dsp?

The goal of DSP is usually to measure, filter and/or compress continuous real-world analog signals. The first step is usually to convert the signal from an analog to a digital form, by sampling it using an analog-to-digital converter (ADC), which turns the analog signal into a stream of numbers. However, often, the required output signal is another analog output signal, which requires a digital-to

analog converter (DAC). Even if this process is more complex than analog processing and has a discrete value range, the application of computational power to digital signal processing allows for many advantages over analog processing in many applications, such as error detection and correction in transmission as well as data compression.

What is Dsp?

Digital signal processing (DSP) refers to various techniques for improving the accuracy and reliability of digital communications. The theory behind DSP is quite complex. Basically, DSP works by clarifying, or standardizing, the levels or states of a digital signal. ADSP circuit is able to differentiate between human-made signals,which are orderly, and noise, which is inherently chaotic.