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AXISP1354–ENetworkCamera
VideoandAudio
AudioModes
TheAxisproductsupportsthefollowingaudiomodes:
Fullduplex-Simultaneoustwo-wayaudioallowingtheAxisproducttotransmitandreceiveaudioatthesametime.Thereisno
echocancellation;iffeedbackloopsappear,trymovingthemicrophoneorthespeaker.
Half-duplex-AudiocanbetransmittedtoandfromtheAxisproductbutonlyinonedirectionatatime.Totransmitaudiousingthe
LiveViewpage,usetheTalkandListenbuttons,seeAMCAudioControls,onpage15.
Simplex—speakeronly-AudioistransmittedfromaclienttotheAxisproductandcanbeplayedbyaspeakerconnected
totheproduct.TotransmitaudiousingtheLiveViewpage,theTalkandMicrophonebuttonsmustbothbeactive,seeAMC
AudioControls,onpage15.
Simplex—microphoneonly-AudiocapturedbytheproductmicrophoneistransmittedfromtheAxisproducttooneormoreclients.
Tosettheaudiomode,gotoVideo&Audio>AudioSettingsandselectthedesiredmodefromtheAudiomodedrop-downlist.
AudioInput
Anexternalmicrophoneoralinesourcecanbeconnectedtotheproduct’sAudio-inconnector.Conguretheaudioinputsettings
underVideo&Audio>AudioSettings.
Note
TheinternalmicrophoneonthisAxisproductcannotbeused.
Note
Theinternalmicrophoneisusedbydefault;theexternalmicrophoneisusedwhenconnected.Itispossibletodisablethe
internalmicrophonebyconnectingaplugtothemicinput.
SelectMicrophonetouseanexternalmicrophoneorLinetouseaLineindevice,e.g.anaudiomixerformultiplemicrophones
oramicrophonewithabuilt-inamplier,asaudiosource.
TheMicrophonepoweroptionprovidesDCpowerforanexternalmicrophone.Microphonepowershouldonlybeusedwith
microphonesthathavenobatteryandwhenusingtheinternalmicrophone.Thissettingshouldnotbeenabledwhenusingadynamic
orbatterypoweredmicrophone.Microphonepowerwillnotharmthemicrophone;ifyouareuncertain,tryswitchingitoffandon.
Touseaprofessionalmicrophonerequiring48Vphantompower,youneedanexternalpowersupplyandabalanced-unbalanced
converter(audiotransformer)inbetween.
UsetheInputgaintocontrolthevolume(dBFullScale)oftheaudioinput.Ifthesoundistoolow,chooseahigherdB,toamplify
thesound.Ifthesoundistoohigh,choosealowerdB.TheLevelbargivesavisualrepresentationoftheaudiosignallevelindB
relativetothefull-scaleinputlevel.
•Green—thesignalisatagoodlevel.
•Yellow—thesignalisbecomingdistorted.
•Red—thesignalisdistorted.
UsetheEncodingoptiontoselectdigitalaudioencodingformat.
•AACrequiresalicenseforbothencodinganddecoding.AACistheleastcomplicatedandmostwidelyusedcodec.If
achievingthebestpossibleaudioqualityisapriority,AACistherecommendedcodectouse.AnAAClicenseisincluded
intheAxisproduct.
•G711isanunlicensedstandardcodecthatisusefulwhenintegratingaudiointoaVoIPsystem
•G726isanunlicensedspeechcodecthatismostcommonlyusedwithinthesecurityindustry.
TheSampleratedenesthenumberoftimespersecondthesoundissampled.Ahighersampleratewillprovidebetteraudio
quality,butalsorequiresagreaterbandwidth.
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