ABSTRACT
In this chapter, the author explains how to assess the fidelity of audio devices and addresses what can and cannot be measured. Only four parameters are needed to define everything that affects the fidelity of audio equipment: noise, frequency response, distortion, and time-based errors. Among devoted audiophiles, one of the most hotly debated topics is the notion that reproducing ultrasonic frequencies is necessary for high fidelity reproduction. A myth is that cables and electronic devices must be “broken in” for some period of time before they achieve their final highest fidelity. Common audio myths involve very small devices that claim to improve room acoustics. One key to identifying many audio myths is the high prices charged. Professional audio analyzers are very expensive, but it’s possible to do many useful tests using only a Windows or Mac computer with a decent-quality sound card and suitable software.
