What is Signal and Advantage of DSP | DSP Lec-1

**What is Signal?**

**Ans**: A signal is defined as any physical quantity that various with time, space or any other variable or variable mathematically.

We can describe a signal as:

S

_{1}(t) = st,
Where t= independent variable

S

_{2}(x, y) = a_{x}+ by^{2}**Digital signal:**A discrete-time signal will have values at intervals along the

Time axis-

Basic element of a digital signal processing system:

**2**

**Write down the Advantage of Digital Signal processing (DSP) over Analog signal processing:**

- . Digital
Signal processing allows flexibility in reconfiguring the operation by changing
program.
- . DSP provides much better control of accuracy requirements.
- . Digital Signals are easily stored magnetic media. ex: tape on disc
- . DSP is cheaper than its analog counter part.