Digital signal processing for audio

Summary form only given. The author gives an appreciation of the diversity of digital signal processing applications within digital audio. He starts with a look at the audio process chain. Since the final receiver is the human hearing mechanism, a small amount of time is given to consideration of current models of its influence on what we actually perceive. This is important in perceptual coding and compression techniques. He then takes a look at audio operations and DSP algorithms, including modern trends and discusses which algorithms can be used where. He reviews the current digital audio products all of which rely to a greater or lesser extent on DSP. This includes the CD player, Mini Disc, and Nicam Stereo TV decoders. He also examines the hardware requirements and how finite register length in computational structures limits the performance by introducing nonlinearity to the processing chain. This can be cured to a large extent by using dither or error spectral noise shaping, both of which are considered