The history and future of DSPs in consumer audio equipment-part I: history and current conditions

The introduction of DSPs into consumer audio/video receivers was for media format decoders such as Dolby Digital and DTS decoding. To achieve greater functionality than decoding alone, additional processors were required, as decoding processes alone commanded virtually all the available capacity of DSPs of the time. Thus additional functions were limited to relatively expensive equipment that could use more than one processor. With the growth in hardware capability has come the ability to do more things. These papers trace how the rate of hardware and software development leads to increased audio capabilities, and proposes how to employ added capacity of DSP in the future.