The AD1953 is a complete 26-bit, single-chip, 3-channel digital audio playback system with built-in DSP functionality for speaker equalization, dual-band compression/limiting, delay compensation, and image enhancement. These algorithms can be used to compensate for real-world limitations of speakers, amplifiers,and listening environments, resulting in a dramatic improvement of perceived audio quality. The signal processing used in the AD1953 is comparable to that found in high end studio equipment. Most of the processing is done in full 48-bit double-precision mode, resulting in very good low level signal performance and the absence of limit cycles or idle tones. The compressor/limiter uses a sophisticated two-band algorithm often found in high end broadcast compressors.