Sinopsis
“Sound” has over the centuries been associated with human hearing (i.e.: “Is there a sound if a tree falls in the forest without a listener present?”) According to Webster, “The sensation perceived by the sense of hearing.” Also from Webster: “Audio, on the other hand, has largely been associated with electrical communication circuits.”
“System” is a word we use to describe any “experience cluster” that we can map as a set of interacting elements over time. Typically a system is mapped by identifying the pathways of information flow, as well as possibly the flow of energy, matter, and other variables. But the flow of information is special; because only information can go from A to B while also staying at A. (Consider: photocopy machines would be useless if one didn’t get to keep the original). Digital systems, analog systems, acoustic systems, etc. should be regarded by a system engineer as so many “black boxes” that need to be matched, interconnected, and adjusted. The internal circuitry should be the interest of the component designer/manufacturer.
Time spent as an apprentice electrician is not wasted. In many cases, large sound systems deal with separate power systems, and safety springs from knowledge of the power circuits that are involved. Conduits, cable sizes, and types of grounding and shielding can be complex even at power frequencies. Knowledge of the electrical codes is a necessary fundamental tool.
From Ohm’s law to the bidding process, an ability to quickly learn new algorithms both speeds up processes and ensure profits. In today’s markets “cut and try” is too expensive of both time and money to allow avoidance of basic computer skills; the use of programs such as Mathcad for both technical and financial calculations is important. Knowing what the formulae actually used are doing is essential. In order to trust any computer program, having done it first on paper the hard way, provides knowledge and confidence in the fast way and leaves you capable of detecting unexpected anomalies that might occur. Yes! You do need more than arithmetic.
Content
- Why Sound System Engineering?
- Voices Out of the Past
- Sound and Our Brain
- Psychoacoustics
- Digital Theory
- Mathematics for Audio Systems
- Using the Decibel
- Interfacing Electrical and Acoustic Systems
- Loudspeaker Directivity and Coverage
- The Acoustic Environment
- Audio and Acoustic Measurements
- Large Room Acoustics
- Small Room Acoustics
- Designing for Acoustic Gain
- Designing for Speech Intelligibility
- What is Waving and Why
- Microphones
- Loudspeakers and Loudspeaker Arrays
- Power Ratings for Amplifiers and Loudspeakers
- Computer-Aided System Design
- Signal Delay and Signal Synchronization
- Signal Processing
- Digital Audio Formats and Transports
- Sound System Equalization
- Putting It All Together
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