AUDIO CODING: BASIC PRINCIPLES AND RECENT DEVELOPMENTS
Marina Bosi · 2003
This paper presents an overview of the technologies adopted in perceptual audio coding. Different multichannel configurations, their advantages and disadvantages, and their impact on the system data rates and capacity are examined. The basic principles behind the quantization, time to frequency mapping and psychoacoustic models stages of an audio coding system are analyzed. Emerging audio formats and new trends, such as parametric audio coding, perceptual noise substitution, PNS, spectral band replication, SBR, and sinusoidal modelling are examined.