Properly sampling continuous signals yields discrete and digital signals
Evidence
Signals that use electrical or electronic circuits and work with signal values on a continuous scale are called analogue signals and methods that process them are called analogue signal processing. Such signals are, in most cases, considered to be continuously observable in time and thus are called continuous-time signals. If such a continuous-time signal is sampled properly at specific moments in time, a discrete-time signal is obtained. When these samples are further converted to discrete numbers, the result is called a digital signal. Methods and techniques to cope with such number sequences are called digital signal processing, or DSP for short. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 323
Categorization
Category: Definitional Content
- DEFINE: Establishes the chain analogue → continuous-time → discrete-time → digital, the core vocabulary of all audio processing.
Related
- Converting continuous sound to digital requires time sampling then numeric quantization (similarity 0.93)
- Analogue, discrete-time, and digital signals form a processing chain. (similarity 0.93)
- Digital audio capture is governed by sampling rate and bit depth (similarity 0.81)
- Sound is inherently analog, continuous in both time and value (similarity 0.81)
- Audio coding aims to reconstruct signals while other processing modifies them (similarity 0.80)
- A sound signal is the registered time-varying vibration of a medium (similarity 0.78)