Technical & Engineering
A-D Converter
Analog-to-Digital Converter; specialized hardware that translates continuous analog electrical signals into binary digital data (1s and 0s).
What is A-D Converter?
An A-D Converter (ADC) samples a continuous analog waveform at regular time intervals and quantises each sample to a discrete digital value. The result is a stream of numbers that represents the original analog signal with fidelity determined by the sample rate (how often the waveform is measured) and the bit depth (how precisely each measurement is quantised). Professional broadcast ADCs typically sample at 48 or 96 kHz with 24-bit precision.
Every piece of audio that enters a modern broadcast facility from an analog source — a studio microphone, a phone-in caller, a legacy tape machine — passes through an ADC to become digital data that automation systems, mixers, and transmission chains can process. The quality of the ADC is therefore a hard lower bound on the station's overall audio quality: cheap ADCs introduce quantisation noise and jitter that no downstream processing can remove.
Why it matters
The foundational engineering component enabling analog studio microphones to interface perfectly with digital broadcast automation and DSP software.
Related terms
- Automation— Complex software and hardware ecosystems (e.
- Actuality (Sound Bite)— Unfiltered, raw audio recordings captured on location outside the controlled studio, featuring interviews or ambient background sound.
- Ad-Lib— Unscripted, entirely improvised vocal delivery by a professional broadcaster, host, or voiceover talent.
- AES / EBU (AES3)— A professional digital audio transfer standard developed jointly by the Audio Engineering Society and the European Broadcasting Union.