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3.11 Technical Abbreviations > 3.11 Technical Abbreviations - Pg. 131

3.11 Technical Abbreviations 131 Table 3.9 Recommended Abbreviations Unit or Term 1000 electron volts A-weighted sound-pressure level in decibels absorption coefficient ac current ac volt acoustic intensity Acoustical Society of America adaptive delta pulse code modulation admittance advanced access control system advanced audio coding advanced encryption standard Symbol or Abbreviation keV dBA a Iac Vac I a ASA ADPCM Y AACS AAC AES