ENML dictionary entries
In this page you can read some remarks about the current dictionary entries contained in our proposed GML dictionary about environmental noise phenomena.
Table of contents
Introduction| LVA | Livello di Valutazione Aeroportuale annuale |
| LVAj | Livello di Valutazione Aeroportuale giornaliero |
| SEL | Sound Exposure Level |
| SPL | Sound Pressure Level |
| SP | Sound Pressure |
| Pa | Pascal |
| phon | phon |
| LAeqT | Continuous Equivalent Level A-Weighted during time T |
| A-weighting | Weighting scale A |
| C-weighting | Weighting scale C. |
| Z-weighting | Weighting scale Z. |
| Fast | Fast time constant |
| Slow | Slow time constant |
| Impulse | Impulse time constant |
| LAF | Sound Pressure Level Fast, dBA |
| LAFMax | Maximum Sound Pressure Level Fast, dBA |
| LAS | Sound Pressure Level Slow, dBA |
| LASMax | Maximum Sound Pressure Level Slow, dBA |
| LAeq1s | LAeqT with T = 1 s |
| day | Day period |
| evening | Evening period |
| night | Night period |
| Lday | Noise indicator for annoyance during day period |
| Ldayj | Noise indicator for annoyance during a single day period |
| Leve | Noise indicator for annoyance during evening period |
| Levej | Noise indicator for annoyance during a single evening period |
| Lnight | Noise indicator for annoyance during night period |
| Lnightj | Noise indicator for annoyance during a single night period |
| Lden | Noise indicator for overall annoyance |
| Ldenj | Noise indicator for overall annoyance in a single 24h period |
| DNL | Day Night Level |
| LVAn | Livello di Valutazione Aeroportuale notturno |
| LVAd | Livello di Valutazione Aeroportuale diurno |
| LAeq_Ambientale | LAeqT in TM, from overall sources |
| LAeq_residuo | LAeqT in TM, without annoyng source |
| LAeq_diurno | LAeqT with TM=57600, from 06AM to 10PM |
| LAeq_notturno | LAeqT with TM=28800, from 10PM to 06AM |
| LAeq1h | LAeqT with T = 3600 |
| TM | Measurement Time in seconds |
LVA
Livello di Valutazione Aeroportuale annuale
Mean annual Day-Night Noise Level as defined in Italian law Decreto Ministero Ambiente del 31/10/1997. Used only in Italy.
LVAj
Livello di Valutazione Aeroportuale giornaliero
Daily Day-Night Noise Level as defined in Italian law Decreto Ministero Ambiente del 31/10/1997. Used only in Italy.
SEL
Sound Exposure Level
Sound Exposure Level as defined in ISO 1996-1 alias: LAE
SPL
Sound Pressure Level
Sound Pressure Level, dB ref: 20 microPa as normally intended for the specific application.
SP
Sound Pressure
Sound Pressure, in Pa
Pa
Pascal
phon
phon
Phon, as defined in ISO 532; 1 phon is equal to 1 dBSPL at a frequency of 1 kHz.
LAeqT
Continuous Equivalent Level A-Weighted during time T
Continuous Equivalent Sound Level (20 uPa ref) in Time T, A weighted as defined in ISO 1996-1.
A-weighting
Weighting scale A
A-weighting, as defined in IEC 61672
C-weighting
Weighting scale C.
C-weighting, as defined in IEC 61672
Z-weighting
Weighting scale Z.
Z-weighting, as defined in IEC 61672 Alias:flat
Fast
Fast time constant
Time constant F (Fast), value 0,125 s, as defined in IEC 61672.
Slow
Slow time constant
Time constant S (Slow), value 1 s, as defined in IEC 61672.
Impulse
Impulse time constant
Time constant I (Impulse), as defined in IEC 61672. Note: the use of Time Constant Impulse is deprecated as reported in Annex C of IEC 61672.
LAF
Sound Pressure Level Fast, dBA
Sound Level with time constant Fast in dBA scale, ref 20 uPa, as defined in IEC 61672.
LAFMax
Maximum Sound Pressure Level Fast, dBA
Greatest time-weighted Sound Level within a stated time interval with constant Fast in dBA scale, ref 20 uPa.
LAS
Sound Pressure Level Slow, dBA
Sound Level with time constant Slow in dBA scale, ref 20 uPa, as defined in IEC 61672.
LASMax
Maximum Sound Pressure Level Slow, dBA
Greatest time-weighted Sound Level within a stated time interval with constant Slow in dBA scale, ref 20 uPa.
LAeq1s
LAeqT with T = 1 s
Equivalent Coninuous Sound Level during a time interval of 1 sec, dBA ref 20 uP alias: short LAeq
day
Day period
Time interval within a 24h period indicating daytime which any noise index refers to start and duration of this time interval depends over the noise index definition.
evening
Evening period
Time interval within a 24h period indicating evening time which any noise index refers to start and duration of this time interval depends over the noise index definition.
night
Night period
Time interval within a 24h period indicating night time which any noise index refers to start and duration of this time interval depends over the noise index definition.
Lday
Noise indicator for annoyance during day period
A-weighted long-term average sound level as defined in ISO 1996-2, determined over all the day periods of year.
Ldayj
Noise indicator for annoyance during a single day period
Equivalent sound continuous level in a single day period.
Leve
Noise indicator for annoyance during evening period
A-weighted long-term average sound level as defined in ISO 1996-2, determined over all the evening periods of year.
Levej
Noise indicator for annoyance during a single evening period
A-weighted long-term average sound level as defined in ISO 1996-2, determined over all the night periods of year.
Lnight
Noise indicator for annoyance during night period
A-weighted long-term average sound level as defined in ISO 1996-2, determined over all the night periods of year.
Lnightj
Noise indicator for annoyance during a single night period
Equivalent sound continuous level in a single night period.
Lden
Noise indicator for overall annoyance
Day-evening-night noise indicator as defined by EU END Directive.
Ldenj
Noise indicator for overall annoyance in a single 24h period
Day-evening-night noise indicator obtained using Ldayj,Levej, Lnightj in the definition of Lden. It is referred to a single 24h period.
DNL
Day Night Level
Day-night average sound level.
LVAn
Livello di Valutazione Aeroportuale notturno
Livello di Valutazione del rumore Aeroportuale, nigthly from 23 to 6 as defined in Italian law Decreto Ministero Ambiente del 31/10/1997. Used only in Italy.
LVAd
Livello di Valutazione Aeroportuale diurno
Livello di Valutazione del rumore Aeroportuale, daily from 06 to 23 as defined in Italian law Decreto Ministero Ambiente del 31/10/1997. Used only in Italy.
LAeq_Ambientale
LAeqT in TM, from overall sources
Equivalent continuous sound level of a group of noise sources, over a specific measurment time TM, as defined in Italian law DPCM 14/11/1997.
LAeq_residuo
LAeqT in TM, without annoyng source
Equivalent continuous sound level of a group of noise sources, excluding the specific annoying source object of enquiring, over a specific measurment time TM, as defined in Italian law DPCM 14/11/1997.
LAeq_diurno
LAeqT with TM=57600, from 06AM to 10PM
Equivalent continuous sound level in daytime period, from 06 AM to 10PM, as defined in Italian law DM 16/03/1998.
LAeq_notturno
LAeqT with TM=28800, from 10PM to 06AM
Equivalent continuous sound level in nightime period, from 10 PM to 06 AM, as defined in Italian law DM 16/03/1998.
LAeq1h
LAeqT with T = 3600
Equivalent Coninuous Sound Level during a time interval of 1 hour, dBA ref 20 uPa.
TM
Measurement Time in seconds
Measurment time in sec, coincident with Equivalent continuous sound level integrating time.
