Digital Noise Cancellation: Sony MDR-NC500D Review

A period of time ago, Sony released MDR-NC500D in Beijing. This headphone adopts digital decoding technology and is the world's first noise-canceling headphone. The launch of this headphone has brought noise-canceling headphone technology to a new level. Active noise-canceling headphones are not a novel product to everyone. So-called active noise-canceling technology, relative to passive noise-canceling technology, means that active headphones need to collect external noise signals, analyze sound waves, and emit opposite wave signals, using the principle of wave cancellation to eliminate noise interference. Traditional active noise-canceling headphones merely maintain processing at the analog signal level, whereas Sony's NC500D has added digital decoding technology, ushering in the era of digital signal noise cancellation.