Here is the complete list of the top ten most popular audio design-related articles for the year.
Number 1: Loudspeakers: Effects of amplifiers and cables.
- Part 1 begins with an overview of amplifiers, and discusses basic requirements for current and voltage output, and transient response.
- Part 2 covers non-linear distortions and amplifier classes and modes of operation.
- Part 3 discusses Class-D and other amplifier classes, MOSFET or BJT?, and choosing an amplifier.
- Part 4 looks at loudspeaker cables and their effect on performance.
- Part 5 explores some provable characteristics of cable performance.
- Part 6 discusses multi-cabling, multi-amplification, system design, and the authors' opinions on claimed sonic differences among loudspeaker cables.
Number 2: Class D Audio Amplifiers: What, Why, and How.
- Part 1 offers a background on linear and Class-D amplifiers and a comparison of their power dissipation characteristics.
- Part 2 analyzes the Class-D amplifier topology and output-stage efficiency.
- Part 3 addresses Class-D zmplifier terminology, differential vs. single-ended versions, choice of output transistor size and output stage protection.
- Part 4 discusses the impact of Class-D choices on sound quality.
- Part 5 covers modulation techniques.
- Part 6 discusses taming EMI.
- Part 7 concludes with a look at system cost issues.
Number 3: Design of High-Performance Balanced Audio Interfaces.
- Part 1 begins with an introduction and a discussion of ground noise.
- Part 2 discusses the balanced interface.
- Part 3 covers the history of balanced circuits and 600-Ω lines.
- Part 4 describes testing of balanced line receivers, and a new line receiver circuit.
- Part 5 offers details on the InGenius line receiver ciruit.
- Part 6 discusses the transformer floating source and cables for balanced lines.
- Part 7 concludes with a discussion of shield current induced noise and a design checklist, as well as a bibliography.
Number 4: How the Intel HD Audio system works.
- Part 1 begins with an overview of the Intel HD Audio system.
- Part 2 covers the Intel HD Audio Codec Layer and Vista details.
Number 5: How Class D audio amplifiers work shows how Class-D amplifiers operate, and a few design pitfalls to avoid.
Number 6: Audio Coding: An Introduction to Data Compression.
- Part 1 discusses the psychoacoustic model of human perception, spectral and temporal masking, and MPEG Layer I coding.
- Part 2 looks at MPEG Layer II coding, MPEG Layer III coding (MP3) and MPEG Advanced Audio Coding (AAC).
- Part 3 discusses MPEG-2 Advanced Audio Coding (AAC), MPEG-4 AAC, Dolby AC3 (Dolby Digital) and other standards.
Number 7: Subwoofer design: Overcoming common performance issues offers a case study of the design of Thiel Audio's SmartSub subwoofers.
- Part 1 provides an overview of the challenges of subwoofer design, and discusses low-frequency performance, integration, room effects, output and distortion.
- Part 2 looks at thermal compression, wall/corner placement, and integration issues.
Number 8: Understanding superior professional audio design: A block-by-block approach looks at the various parameters and benefits for each part of the audio signal chain that designers should consider when designing a professional audio product.
Number 9: Design and analysis of a basic class D amplifier provides a guided tour of engineering student Chi Ho Li's attempt to design and implement a discrete component Class-D amplifier.
Number 10: Assessing Class D vs AB audio amplifier thermal issues for cramped enclosures.
- Part 1 discusses whether test standards that were developed for AB are appropriate for Class D
- Part 2 looks at power dissipation and amplifer classes
- Part 3 concludes with thermal evaluation and burn-in test