SYMBOLS USED IN THIS BOOK
| a | radius of diaphragm (mm); acceleration (m/s2) |
| A | ampere (unit of electrical current) |
| AF | audio frequency |
| c | speed of sound (334 m/s at normal temperature) |
| °C | temperature (degrees celsius) |
| d | distance (m) |
| dB | relative level (decibel) |
| dB(A) | A-weighted sound pressure level |
| dBu | signal voltage level (re 0.775 volt rms) |
| DC | critical distance (m) |
| DI | directivity index (dB) |
| E | voltage (volt dc) |
| e(t) | signal voltage (volt rms) |
| f | frequency in hertz (s−1) |
| HF | high frequency |
| Hz | frequency (hertz, cycles per second) |
| I | acoustical intensity (W/m2) |
| I | dc electrical current, ampere (Q/s) |
| i(t) | signal current (ampere rms) |
| I0 | mechanical moment of inertia (kg × m2) |
| j | complex algebraic operator, equal to |
| k | wave number (2π/λ) ... |
Get The Microphone Book, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
