Sony has finally launched the WH-1000XM4, the latest in the company's flagship range of noise-canceling headphones. The WH-1000XM4 is a more iterative update with a 'if it ain't broke' attitude but features enough noteworthy improvements across the board. For starters, Sony has improved upon the already excellent active noise canceling on the previous model. The WH-1000XM4 features the same dual microphones and QN1 noise-canceling chipset as before but also adds a new SoC that samples music and ambient noise 700 times per second. This data, along with a new algorithm, is then used...