directivity+pattern

- access-barred signal
- accompanying-sound signal
- acoustic signal
- active line duration signal
- actuating signal
- address-complete signal
- address-incomplete signal
- alarm indication signal
- alarm signal
- alternating mark-inversion signal
- amplitude-modulated signal
- analog electric signal
- analog signal
- ancillary signal
- anisochronous signals
- answer signal
- aperiodic signal
- arrival signal
- audible signal
- authentication signal
- B signal
- background signal
- backward signal
- band-limited signal
- bell signal
- bidirectional signal
- binary signal
- bipolar signal
- black signal
- black-burst signal
- blanketing signal
- blocking acknowledgement signal
- blocking signal
- blue signal
- broadband coding signal
- busy signal
- buzzer signal
- B-Y signal
- call signal
- call-accepted signal
- call-acknowledgement signal
- callback ring signal
- call-confirmation signal
- call-control signal
- called number signals
- called-terminal answered signal
- called-terminal engaged signal
- call-failure signal
- calling indicator signal
- calling signal
- call-not-accepted signal
- call-progress signal
- call-request signal
- call-sending check signal
- camera signal
- carrier chrominance signal
- carrier color signal
- carrier sense signal
- carrier signal
- case-shift signal
- caution signal
- cellular signal
- channel-identification signal
- chirp signal
- chroma signal
- chrominance signal
- chrominance video signal
- circuit group congestion signal
- clear-back signal
- clear-confirmation signal
- clear-forward signal
- clearing signal
- clock signal
- code signal
- color bar signal
- color identification signals
- color signal
- color-difference signal
- color-picture signal
- color-separated signal
- color-sync signal
- common emergency signal
- common-mode signal
- compelled signal
- complete-address signal
- complex TV-signal
- component-coded digital video signal
- composite color sync signal
- composite video signal signal
- compressed-video signal
- conference communication signal
- confirmation-to-receive signal
- confusion signal
- connection-in-progress signal
- continuous time signal
- control track signal
- convergence signal
- cosine signal
- counterphase signal
- crosstalk signal
- cue signal
- danger signal
- data signal
- data-transfer request signal
- dc signal
- DCE clear signal
- DCE waiting signal
- desk-spot signal
- detected signal
- detection signal
- differential signal
- digital component video signal
- digital signal
- directivity signal
- disable signal
- discernible signal
- disconnect signal
- discrete-time signal
- dither signal
- doubleside signal
- driving signal
- DTE-clear signal
- duress signal
- electric signal
- electrooptic signal
- emergency signal
- enable signal
- enciphered signal
- encoded signal
- end-of-copy signal
- end-of-impulsing signal
- end-of-pulsing signal
- end-of-selection signal
- engaged signal
- error signal
- excitation signal
- exponential signal
- facsimile signal
- false signal
- fate signal
- fault signal
- feedback signal
- field sawtooth signal
- field synchronization signal
- figures-shift signal
- finite signal
- first-buzzer signal
- floating signal
- foreground signal
- forward recall signal
- four-aspect signal
- frame sync signal
- frame-alignment signal
- framing signal
- free-line signal
- full-frame test signal
- functional signal
- gate signal
- Gaussian signal
- green signal
- group signal
- G-Y signal
- hang-up signal
- HF signal
- homochronous signal
- horizontal sync signal
- hydroacoustic signals
- idle indication signal
- in-band signal
- information signal
- inhibiting signal
- injection signal
- in-phase signal
- input signal
- interfering signal
- intermediate-frequency signal
- international-code signal
- interoffice signals
- interrupt signal
- inversion signal
- isochronous signals
- jam signal
- left signal
- left-backward signal
- left-forward signal
- line sawtooth signal
- line synchronization signal
- linear signal
- line-drop signal
- line-out-of-service signal
- load-off signal
- local signal
- locking signal
- loop-down signal
- loop-error signal
- loop-up signal
- low-frequency signal
- luminance staircase signal
- M signal
- marking signal
- MAYDAY signal
- mesochronous signal
- microwave signal
- minimum descernible signal
- minimum detectable signal
- modulated signal
- modulating signal
- monitor signal
- monitoring signal
- monochromatic signal
- monophonic signal
- multichannel telephony signal
- multipage signal
- multiplexed signal
- multitone test signal
- music melody signal
- narrowband return signal
- n-level output signal
- noise-free signal
- noise-shaped signal
- noncompelled signal
- noncomposite color picture signal
- note-off signal
- note-on signal
- n-position signal
- number received signal
- offering signal
- off-hook signal
- on-hook signal
- optical signal
- optimal amplitude signal
- orthogonal signal
- out-of-band signal
- output signal
- PAN-signal
- periodic signal
- permanent signal
- phantom signal
- phasing signal
- pickup signal
- picture signal
- picture-phone signal
- picture-shading signal
- pilot signal
- playback signal
- plesiochronous signal
- polar signal
- polling signal
- power signal
- pre-video signal
- primary signal
- probing signal
- proceed-to-select signal
- proceed-to-transmit signal
- program signal
- protection signal
- pseudonoise signal
- pulse control signal
- pulse signal
- pulsed signal
- Q-signal
- quadrature-phase subcarrier signal
- quantized signal
- quasi-harmonic signal
- radio-frequency signal
- radioimpulse signal
- radio-time signals
- reading signal
- ready-for-data signal
- ready-to-receive signal
- recall signal
- receiving acknowledgement signal
- rectangular signal
- RED signal
- red signal
- RED/BLACK signal
- redundant signal
- reference signal
- regenerated signal
- regular signal
- reorder signal
- request signal
- request-for-repetition signal
- re-reflected signal
- rering signal
- reset signal
- residual signal
- retransmitted signal
- return signal
- returned signal
- rewrite signal
- rewriting signal
- right signal
- right-backward signal
- right-forward signal
- ringing signal
- ring-off signal
- round-the-world signal
- runout signal
- safety signal
- sampled signal
- saturation signal
- saw-toothed signal
- second buzzer signal
- secondary signal
- security signal
- seizing signal
- sending acknowledgement signal
- sensed signal
- service signal
- shading compensation signal
- shading signal
- silhouette signal
- simplest sync signal
- sin signal
- single-ended signal
- single-sideband signal
- smear signal
- SOS-signal
- sound signal
- space signal
- speech signal
- spurious signal
- start dialing signal
- start signal
- start-record signal
- start-stop signal
- station answer signal
- stereophonic signal
- stop signal
- stop-record signal
- stuffed signal
- supersync signal
- supervisory signal
- suppressed sideband signal
- switch signal
- switchover signal
- synchronous signal
- synphase signal
- system busy signal
- teledata signal
- telegraph-control signal
- telephone-control signal
- ternary signal
- testing signal
- test-line signal
- test-pattern signal
- threshold signal
- ticker signal
- time signals
- timing reference signal
- total television signal
- transmission confirming signal
- triangular signal
- triggering signal
- tristimulus signal
- TV-control signal
- TV-transmission signal
- undesired signal
- unstuffed signal
- unvoiced signal
- urgent signal
- vertical synchronization signal
- vestigial sideband signal
- videoimpulse signal
- visual message signal
- voice analog signal
- voice answer signal
- wanted signal
- warning signal
- weighted signal
- white signal
- write signal
- writing signal
- Y-signal

noise n acoustic noise actual noise level measurement actual sideline noise level aerodynamic noise aggregate noise duration aircraft noise abatement operating procedures aircraft noise annoyance aircraft noise certificate aircraft noise pollution aircraft noise prediction program airport noise contour ambient noise ambient noise level approach noise angle approach noise level approach noise measurement approach noise path approach noise reference point atmospheric noise attenuate noise augmented lift system noise certificated noise level Committee on Aircraft Noise community noise level composite noise rating continuous perceived noise level contour of perceived noise corrugated noise suppressor current noise technology standard design noise level dipole-type noise field directional noise measurement duration of noise effect environment control system noise equal noise contour exhaust noise suppressor flight test noise measurement flyover noise flyover noise level flyover noise limit flyover noise measurement flyover noise test generalized noise characteristics ground run-up noise abatement ignition noise jet noise jet noise prediction technique landing noise lateral noise measurement distance level flight noise requirements main rotor noise maximum permissible noise level measured noise data minimum noise procedure minimum noise route noise abatement device noise abatement measures noise abatement procedures noise abatement takeoff noise abatement technique noise abatement thrust cutback noise absorbing wedge noise absorption noise absorption coefficient noise annoyance rating system noise attenuation noise cancelling noise carpet noise certification approach path noise certification procedure noise certification reference conditions noise certification scheme noise certification standard noise certification takeoff flight path noise certification test conditions noise characteristics noise charge noise control noise control technique noise curfew noise directivity noise dissipation noise disturbance noise dose contour noise environment noise evaluation noise evaluation method noise evaluation procedure noise exposure assessment method noise exposure contour noise exposure forecast noise field noise filter noise floor noise footprint noise generation noise immunity noise insulation noise level noise level attenuation curve noise level radiation noise level value noise map noise measurement location noise measurement procedure noise meter noise monitoring noise muffler noise path noise path length noise preferential route noise preferential runway noise pressure level noise propagation noise propagation pattern noise reduction noise reduction modification noise reduction requirements noise scale noise sertification test noise spectrum noise suppression noise suppression device noise suppressor noise test noise thrust correction originate noise peak perceived noise level permissible noise level radio noise reduce noise reduce noise level reverse thrust noise solar noise standard noise level subsonic noise standard take-off noise takeoff noise takeoff noise angle takeoff noise test test noise turbulence-induced noise unit noise duration