Appendix: Symbols and Abbreviations
| a | absorption coefficient: |
| aS = Sabine | |
| aN = Norris-Eyring | |
| aR = room constant | |
| ā | average absorption coefficient |
| A | ampere |
| ac | alternating current |
| AES | Audio Engineering Society |
| AIP | available input power |
| %ALCONS | percentage of articulation loss for consonants |
| AM | automatic mixer |
| amplitude modulation | |
| ANCA | ambient noise controlled amplifier |
| ANL | ambient noise level |
| ANSI | American National Standards Institute |
| APF | all-pass filter |
| ASA | Acoustical Society of America |
| BBF | band-boost filter |
| BPF | bandpass filter |
| BPST | bandpass sweep time |
| BRF | band-rejection filter |
| BW | bandwidth |
| c | velocity in many acoustic equations |
| CL | coverage angle |
| CBF | constant bandwidth filter |
| CPB | constant ... |
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