Sound Reproduction

Le résumé fourni par la source

This chapter discusses the needs and challenges faced in sound reproduction. A wide variety of applications in which sound needs to be reproduced such as: public address, full-duplex speech communication, audio content production, broadcasting, computer games, virtual reality, accurate reproduction of sound, enhancement of acoustics and active noise cancellation, and aided hearing. Sound can be made audible over different loudspeaker set-ups, ranging from a monophonic setup to multi-channel systems and headphones. The best-known systems are discussed and the most common recording techniques are described. Virtual source positioning aims to control only the perceived direction of virtual sources, although sometimes the distance and the spatial width of sources may also be controlled. The basic binaural recording technique is to reproduce a recorded binaural sound track through headphones. Digital audio effects are systems that modify audio signals fed at their inputs according to set control parameters and make the modified signal available at their outputs.

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