CCNP and CCIE Collaboration Core CLCOR 350-801 Official Cert Guide, 2nd Edition

Chapter 2

Audio Basics

This chapter covers the following topics:

• Basic Understanding of Sound: This topic will introduce a basic understanding of how sound behaves, including wave propagation, technical properties of sound waves, and noise.

• Analog vs. Digital Signals: This topic will compare noise on an analog signal compared to noise on a digital signal, observe the principle of the Nyquist-Shannon theorem, and identify how bandwidth conservation can be achieved through data compression.

• ITU Audio Encoding Formats: This topic will identify the most commonly used audio codecs in a Cisco solution and analyze the various aspects of each codec.

The preceding chapter provided a backward look into the evolution of communications and a high-level ...