Delta Modulation is a method of converting analog signals to digital for data processing, primarily used for voice communications. It is error-prone and degrades with distance. Pulse code modulation is the original process, while adaptive delta modulation produces better signal-to-noise ratio output rates. Alec Reeves invented PCM in 1937, making the digital age possible. Delta […]
Delta Modulation (DM) is a fast but error-prone method of converting analog signals to digital signals for short-range transmission. Pulse code modulation (PCM) and adaptive delta modulation (ADM) are variations of DM that produce better signal-to-noise ratio output rates. PCM is still used to encode audio signals on various forms of electronic media. Alec Reeves […]
Multi-carrier modulation involves splitting data into components and routing them through multiple carrier signals, reassembling them at the end. It was used in mid-20th century military weapons and is now used in digital communication protocols, audio communications, and internet connectivity. It minimizes signal fading and noise but may have synchronization issues. Multi-carrier modulation or MCM […]
Amplitude modulation is a method of embedding information in radio waves by changing the amplitude of a carrier signal with an audio signal. It is used in two-way radios and radio broadcasting, but has been replaced by more efficient methods like frequency modulation. Amplitude modulation is inefficient and subject to background noise. Demodulation is necessary […]
