Chapter 3. Dynamic Range
Distortion and Noise
In engineering terms, dynamic range is the ratio between the largest and the smallest signals, and it is primarily wide dynamic range (not bandwidth) that distinguishes quality audio from rubbish. Provided that the largest signal is not clipped, maximising dynamic range becomes a problem of minimising the three unwanted signals that otherwise mask the smallest wanted signal:
• Artificial interference, frequently referred to as ElectroMagnetic Compatibility (EMC).
EMC is largely a construction issue and will be considered in
Building Valve Amplifiers, so this chapter will investigate how to minimise distortion and noise.
To investigate and minimise distortion, we must ...