Audio Engineering

402 Chapter 13 13.5.1 Cooling All power amplifi ers will have a heat sink that needs cooling, usually by free convection, and th ...

Noise and Grounding 403 surface as these will allow the entry of spilled liquids and increase dust entry. BS415 is a good starti ...

404 Chapter 13 or cabling to the power transistors if these are mounted off board. For this reason, the transformer should be ke ...

Noise and Grounding 405 sink is not normally essential, as the PCB need not make any connection to the heat sink fi xing pads. ● ...

406 Chapter 13 Alternatively, TO3s can be mounted off PCB (e.g., if you already have a large heat sink with TO3 drillings) with ...

Digital Audio PART 4 ...

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Digital Audio Fundamentals John Watkinson 14.1 Audio as Data ................................................................... ...

410 Chapter 14 Tape is a linear medium and it is necessary to wait for the tape to wind to a desired part of the recording. In c ...

Digital Audio Fundamentals 411 the Internet, or as the soundtrack of media such as DVD. Media such as compact disc supply uncomp ...

412 Chapter 14 signal is noise and what is the original? If the transfer function of a system is not linear, distortion results, ...

Digital Audio Fundamentals 413 Instead of being continuous, the time axis is represented in a discrete or stepwise manner. The a ...

414 Chapter 14 14.3 Why Binary? ................................................................................................ ...

Digital Audio Fundamentals 415 Figure 14.4 : An ideal binary signal (a) has two levels. After transmission it may look like (b), ...

416 Chapter 14 it has passed through a real system. The waveform has been considerably altered, but the binary information can b ...

Digital Audio Fundamentals 417 or closed and so represent a single bit. This switch may control the voltage in a wire that allow ...

418 Chapter 14 the left-hand end of the word is called the most signifi cant bit (MSB). Clearly more digits are required in bina ...

Digital Audio Fundamentals 419 The wordlength determines the possible range of values: Wordlength Range 1 2 3 8 10 • • • • • • ...

420 Chapter 14 In the real world everything has a cost, and one of the greatest strengths of digital technology is low cost. Whe ...

Digital Audio Fundamentals 421 Figure 14.8 : In (a) two convertors are joined by a serial link. Although simple, this system is ...