Analogue mixing options, multiple onboard clock generators, and support for multiple analogue and digital microphones enable the WM8962 from Wolfson Microelectronics to support consumer electronics applications. The DSP has multiple pre-set algorithms. Virtual Surround Sound widens the stereo speaker audio image and HD bass intelligently enhances low frequencies, boosting the frequencies that small speakers can reproduce, without increasing the lowest frequency signals that small speakers cannot reproduce. The ReTune feature flattens the frequency response of the speaker or microphone path to maximise the performance of the transducer. A configurable DSP includes 3D widening functions for recording, a five-band parametric equaliser and a dynamic range controller. An integrated charge pump and ground referenced output are also included with a Class-W ultra low power headphone driver reduces DC ground offsets and minimising pops and clicks. The DSP incorporates a stereo Class-D speaker driver, which provides 1W per channel into 8Ω loads, or 2W mono into a 4Ω load, with a 5V supply. Low leakage and pop-click suppression mechanisms also allow direct battery connection to the speaker supply.
