Handbook for Sound Engineers

1652 Chapter 48 S is the speed, l is the length or distance, t is the time to travel. Speed is a scalar quantity as it is not re ...

Fundamentals and Units of Measurement 1653 The lower fixed point (the ice point) is the tempera- ture of a mixture of pure ice a ...

1654 Chapter 48 where, ejwt is cosAt + jsinAt or Euler’s identity. Kirchhoff’s Current Law (KCL). Kirchhoff ’s current law state ...

Fundamentals and Units of Measurement 1655 48.3 Decibel (dB) Decibels are a logarithmic ratio of two numbers. The decibel is der ...

1656 Chapter 48 Table 48-3. Relationships between Decibel, Current, Voltage, and Power Ratios dB dB dB dB dB dB dB dB Voltage Lo ...

Fundamentals and Units of Measurement 1657 (48-41) Example: The dBm for a 32 : load is This can also be determined by using the ...

1658 Chapter 48 48.5 Sound System Quantities and Design Formulas Various quantities used for sound system design are defined as ...

Fundamentals and Units of Measurement 1659 (48-46) M. The critical distance modifier (M) corrects for the effect of a different ...

1660 Chapter 48 'Do, 'D 1 , 'Ds, and 'D 2 are found as in NAG. Q. The directivity factor (Q) of a transducer used for sound emis ...

Fundamentals and Units of Measurement 1661 Max Program Level. Max program level is the maximum program level attainable at a spe ...

1662 Chapter 48 (48-69) where, V is the room volume, S is the surface area, a is the total absorption coefficient, X is the spac ...

Fundamentals and Units of Measurement 1663 48.7 Greek Alphabet The Greek alphabet plays a major role in the language of engineer ...

1664 Chapter 48 AES7-2000: (r2005) AES standard for the preservation and restora- tion of audio recording—Method of measuring re ...

Fundamentals and Units of Measurement 1665 AES-3id-2001: (r2006) AES information document for digital audio engineering—Transmis ...

1666 Chapter 48 48.9 Audio Frequency Range The audio spectrum is usually considered the frequency range between 20 Hz and 20 kHz ...

Fundamentals and Units of Measurement 1667 48.11 Technical Abbreviations Many units or terms in engineering have abbreviations a ...

1668 Chapter 48 audio high density AHD audio over IP AoIP audio/video receivers AVR automated test equipment ATE automatic frequ ...

Fundamentals and Units of Measurement 1669 constant bandwidth CB constant bandwidth filter CBF constant bit rate CBR constant li ...

1670 Chapter 48 directivity factor Q directivity index DI Discrete Fourier Transform DFT discrete multitone DMT display data cha ...

Fundamentals and Units of Measurement 1671 foot ft/ ['] foot per minute ft/min foot per second ft/s foot per second squared ft/s ...