400 Hz Test Tone

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  • čas přidán 30. 12. 2015
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Komentáře • 161

  • @muhammadmore
    @muhammadmore Před 3 lety +92

    My Lexus LFA sounds really similar to this

  • @cottoncandysugar4500
    @cottoncandysugar4500 Před 4 lety +91

    Got water in speakers gang where you at

  • @cassandra2860
    @cassandra2860 Před 5 lety +16

    Thanks! This let me know that my headphones were messed up. The frequency in my headphones goes up and down, all over the place.

  • @jolyonwelsh9834
    @jolyonwelsh9834 Před 7 lety +92

    This is the frequency at which alternating current operates on aircraft.

    • @ghostzofficial2786
      @ghostzofficial2786 Před 6 lety +1

      Yup

    • @flatcapman
      @flatcapman Před 5 lety +2

      and a USA phone line

    • @CODMarioWarfare
      @CODMarioWarfare Před 5 lety +3

      Lloyd Duff No.

    • @flatcapman
      @flatcapman Před 5 lety

      excuse me its higher but the same pitch and I know because I have listioned to your phone dial to see if it matches my voice..THANK YOU

    • @CODMarioWarfare
      @CODMarioWarfare Před 5 lety +5

      Lloyd Duff Okay, I wasn't sure what you were talking about because there's things like 20hz AC on a phone line for ringing current. Standard US dial tone is a mix of 350hz and 440hz. So it is two frequencies that are close to this, but roughly 2 musical semitones in each direction.

  • @MarkJoeMusic
    @MarkJoeMusic Před 3 lety +33

    400hz... I've always thought that this is the frequency that NEEDS to replace the 1000hz tone that is used to Censor Bleep profanity. 1000hz is better off as the tone for emergency alerts such as severe weather since the intention of the beeps is to get your undivided attention (The EAS already uses something to that effect). 400hz is still loud, but muffled enough so as not to have that 'startling' element that the 1000hz has and therefore, is better suited to censor swearing.

    • @sebastianrodriguez9452
      @sebastianrodriguez9452 Před 3 lety +1

      Fax no printer

    • @flatcapman
      @flatcapman Před 3 lety +1

      400hz is too laid back to have the alert effect. I think TV stations used the 1000hz tone because it was more defined for Audio adjustment. Also cheaper to use as a tone as 400hz cost more due to adjusting the tone hence costing them more to pay whoever supplied it. Just a thought nothing concreate unless anyone has a better explantion for them

  • @eascec8374
    @eascec8374 Před 3 dny

    Whenever your television station signs off the air for the night.

  • @voiceofjeff
    @voiceofjeff Před 11 měsíci +3

    I find some of the comments here amusing. The actual tone used by the weather service to alert listeners is 1050Hz, not 1000Hz. That's the single tone you hear at the beginning of a weather alert on NOAA Radio. Weather receivers decode that tone after a certain length of time and trigger the alert warning in the radio (the sound of a wail or siren), or just open the audio so you can hear the NOAA audio.
    As for the EBS (now EAS) tones, it's a combination of 853Hz and 960Hz transmitted simultaneously, and at specific lengths of time. One thing you CAN NOT do is to transmit those tones unless there is an actual emergency. The FCC gets very upset and very involved when people think it's cute to use those tones on the air when no emergency exists and will fine your a$$ off for doing so! Having worked in radio for 40 years, I became very familiar with the EBS (EAS) tones, how they were used, and when we could use them.
    Personally, I think the 1000Hz tone for beeping out profanity isn't used properly. It's often way too loud for the general program content it's used in. You can beep out words with a lower level tone and still have the same effect, while not blowing listeners out of their chairs!

  • @markusvinplex747
    @markusvinplex747 Před 4 lety +32

    This is the sound my great Gramp's pulse monitor makes.

  • @idk-vb8ze
    @idk-vb8ze Před 4 lety +14

    Why is my speaker spitting on me

    • @briannaa2782
      @briannaa2782 Před 3 lety +1

      Lol that means you got water in the speakers. 400 hertz pushes the water out. I use this audio to clean out the water every time I get my phone wet.

  • @DonkeykongSw2
    @DonkeykongSw2 Před 2 lety +1

    This tone was used in USA and Japan for TV test tone.

  • @greystripe3737
    @greystripe3737 Před 2 lety +3

    400 hz is the most common ac frequency for planes, qnd this sounds like a hum over a plane radio

  • @adamszrenka389
    @adamszrenka389 Před 5 lety +11

    I had headache from this xD

    • @flatcapman
      @flatcapman Před 5 lety

      It can damage your hearing

    • @adamszrenka389
      @adamszrenka389 Před 5 lety

      @@flatcapman Awesome! I want to hear this with my headset! :D

    • @flatcapman
      @flatcapman Před 5 lety +2

      I have a better idea. Come To Australia. Our accents sound like this tone

    • @felix5054
      @felix5054 Před 4 lety

      Szrenka Adam same bro

  • @HekateMGO
    @HekateMGO Před 2 lety +4

    If you work on airplanes you know this one.

  • @austinthevhsvideogamelover5265

    The 1986-1989 Black Screen of death tone heard at the end of certain Warner Bros Cheesy Shield tapes, Disney buena vista tapes, and a few others.

  • @RoseClimbPaintC
    @RoseClimbPaintC Před 3 lety +4

    That was nice. It sounded very nice.

  • @christiansekumade1223
    @christiansekumade1223 Před 4 lety +2

    Yup. The note here is Ab 4 tuned -027. If you can play G 4(middle G) on a 448.98 hertz instrument, you should get 4 hectohertz.

  • @flatcapman
    @flatcapman Před 2 lety +23

    This tone has a strange effect on me. It sends me into a trance. Always has. I feel deeply its a part of me and 1000hz makes me alert 400hz puts me to sleep with my eyes open. I call it "the Family tone" and I see it the same as my finger prints. If you think hearing this is intense wait till you hear a person talk in it with a SMPTE ripple

  • @byfieldmichael1992
    @byfieldmichael1992 Před 3 lety +2

    In fact if you turn this tone all the way up and put your speaker close to your ear you can feel air moving through it

  • @speedster21auer73
    @speedster21auer73 Před rokem +1

    I used this to calibrate a cassette player and when it played fast I checked the frequency with an analyzer app and it said that it was 368hz when I calibrated the cassette player to 368hz it played perfect

  • @imgonnagetchaketchup
    @imgonnagetchaketchup Před 2 lety +1

    Did you know 80-400 Hz sounds can make a spider freeze???

  • @wickamouse5
    @wickamouse5 Před 3 lety

    The end of tapes does have the low pitched black screen of death by 1984-1989.

  • @gerraldyovindi7980
    @gerraldyovindi7980 Před 3 lety

    Everybody is gangsta until the sound is still on and it came from someone near you in a hospital

  • @francozuno5174
    @francozuno5174 Před rokem +1

    B737 voltage frequency

  • @TraditionRoots
    @TraditionRoots Před 2 lety +2

    banger

  • @britishmgtow7251
    @britishmgtow7251 Před 5 lety +3

    Using this to fault diagnose rfi on an aircraft

  • @samhoff1724
    @samhoff1724 Před 4 lety +12

    This is beautiful 😍

  • @julietA66753
    @julietA66753 Před 27 dny

    my brain started tweaking what

  • @Basilisk24357
    @Basilisk24357 Před 6 měsíci

    I have been doing research on mosquitoes and apparently this is the perfect sound to attract them because it is similar to the beat of a females wings

  • @Newfsters
    @Newfsters Před rokem

    It's really weird cause if you just hum it does the thing where two frequencies contrast.

  • @ramalingeswararaobhavaraju5813

    Good evening sir Sonic Electronix, thank you so much sir.

  • @prophile5897
    @prophile5897 Před 4 lety +2

    I love you

  • @Connor312_
    @Connor312_ Před 3 lety +4

    LFA gang

  • @BeRadG5563
    @BeRadG5563 Před rokem

    Apparently spiders don’t like 80hz to 400hz so I’m playing this to get rid of spiders found 8 in my home within 2days

  • @Dylwap
    @Dylwap Před 7 měsíci

    Why does it sound lower in my right ear but higher in my left

  • @wickedleeloopy2115
    @wickedleeloopy2115 Před 5 lety +4

    I'm sencing this sound from a vast place with great purpose. I can't put my finger on why the voices in my head are telling me of grand significance. That probably sounds crazy.😂

    • @flatcapman
      @flatcapman Před 5 lety +3

      I don't think your crazy. I have Autism and Im sensing something from this tone. And even an evolution where the tone can evolve to a Human voice using upper and lower tones to denote words in pitch. This sound is Australian and the 1000hz one is clearly "English" 2 different men=one streamline

    • @blazinggig1254
      @blazinggig1254 Před 5 lety +2

      Ancient forgotten civilisation have build several perfect geometrical rooms directly in a massiv stone in India wich resonate very well with this frequency, but we don't know why... (400hz 800hz 1000hz 1200hz)

    • @chironOwlglass
      @chironOwlglass Před 4 lety

      if you like 400 that much, you should try 432. and learn about solfeggio frequencies. sounds are powerful. the nervous system uses frequencies to communicate to the body. In the same way we are subtly influenced by plant hormones when we eat them, sounds can subtly influence our bodies as well. I have holes in my skull that make my brain perceive sounds as my body moving, and I am extremely sensitive to different frequencies, as you appear to be.

    • @flatcapman
      @flatcapman Před 4 lety

      @@chironOwlglass that doesnt explain how 400hz can hynotise me

    • @The3e45T
      @The3e45T Před 11 měsíci

      400hz is the natural frequency of the earth and it has a great significance to the pyramids.

  • @UPGDevelopment
    @UPGDevelopment Před rokem

    me tring to scare a spider:

  • @spane5mixline
    @spane5mixline Před 11 měsíci

    this tone gives me serious headache, its the same call tone on whatsapp

  • @jolyonwelsh9834
    @jolyonwelsh9834 Před 6 lety

    Brancher a bourd? Ne penser pas de brancher au prises murales dans l'environs de la galere. Les systems d'alimentations electriques sure Des avions commerciaux marchent normalement a 115 volts C.A. a 400HZ. C'est sufficient pour abimer gravement votre laptop. Les prises dans les salles de bains marchent a voltage regulier (110v60Hz). Mais plusiers sont deconnectees.

  • @user-wj4lf4oy6y
    @user-wj4lf4oy6y Před 2 měsíci

    Sound like korean kbs and sbs sign off

  • @skrtonthebeat8481
    @skrtonthebeat8481 Před 3 lety

    Snow In tha phone foh today

  • @Issa.mp3
    @Issa.mp3 Před 2 lety

    a 300 cent sharp G

  • @mutherhen
    @mutherhen Před 2 lety +1

    This sound causes spiders to stop in their tracks. They freeze up. Anything between 80 to 400 hz will work fine

  • @leahdudash9421
    @leahdudash9421 Před 2 lety

    I’ve heard people use this in songs to make the melody sound better. Idk

  • @marcelchagnon4960
    @marcelchagnon4960 Před měsícem

    God singing

  • @3949zxcvbnm
    @3949zxcvbnm Před 3 lety +7

    I felt a pressure drop in my blood vessels after listening to this. What if sound waves could ultrasonically clean corroded blood vessels?

  • @brandyvitale7974
    @brandyvitale7974 Před rokem

    This frequency is used for Neck issues

  • @Snoopdoggerblack
    @Snoopdoggerblack Před 9 měsíci

    i closed my eye and it feels me different sound

  • @dragonluvver975
    @dragonluvver975 Před rokem

    my skull is vibrating

  • @JonasRosenven
    @JonasRosenven Před 3 lety

    If you listened very closely to my former girlfriend's head you would hear this exact sound.

  • @imapersononyt.3385
    @imapersononyt.3385 Před 4 lety +1

    Mmm 200 hz

  • @AbsoluteDigitalPictures

    CBFT Canál 2 Montreal

  • @akrambf2184
    @akrambf2184 Před 4 lety

    Can this kill mosquitos ??

  • @paradiddleJazz
    @paradiddleJazz Před rokem

    Had the volume up too loud and it hertz!

  • @marcoantoniomartinezpachec6763

    no mames mi espiritu xdxdxdddddd

  • @user-vj3qh9ze1m
    @user-vj3qh9ze1m Před 3 lety

    Вау, ни одного комментария на русском!
    Буду первый!

  • @SFSPerseverance69420
    @SFSPerseverance69420 Před 9 dny

    b737

  • @killerkite333
    @killerkite333 Před 4 lety

    Is it really 400 Hz? I thought youtube compresses audios the time you upload it

    • @flatcapman
      @flatcapman Před 4 lety

      its 400hz I remember the exact sound from our CRT TV back in the day

    • @allanreilly5827
      @allanreilly5827 Před 4 lety +2

      Lloyd Duff nope. A CRT would make 15,000 Hz. Sky: compression would not change a file’s frequency. A sine wave is the simplest sound, so it is the easiest thing for digital compressors to describe. It would therefore not change at all.

    • @flatcapman
      @flatcapman Před 4 lety

      @@allanreilly5827 mate I seen enough tv sign offs to know the difference and i know my own tone thank you. I even dreamed I toned it out of my mouth and coming from a person? YES ITS NOT ROMANTIC IT WAS CREEPY. BTW you are wrong because a Sine wave can be not only amped but can be used as a weapon as well because if you jack it to jet HZ you can not only blow a person's head apart but the vibration from the backfeed would dissolve human bones as well. think Im kidding? OK put 1000hz in G Major on You Tube and NEVER listion to it with headphones unless you desire to be deaf for life..HE WILL MAKE YOUR EARS BLEED. Static is just boring No ghosts but a test pattern can be dangerious

    • @Alllgr
      @Alllgr Před 4 lety +2

      Lloyd Duff Well you specified CRT, so it sounded like you were talking about the flyback transformer. That is 15,000 hz. The TV sign-off would come out of your speaker and so the display type would be irrelevant. I think they used that tone because it is good for finding problems in an audio circuit. You can look at the tone on a waveform monitor and different kinds of problems will change the shape you see in predictable ways. As for using sound as a weapon, that was always too impractical for real world use. Bombs are far cheaper and more predictable. :0

    • @flatcapman
      @flatcapman Před 3 lety

      @@Alllgr Also a signal can be hidden under a test pattern signal with a scrambler. If it matches the broadcast it's masked under the bars. In the x-files wetwired it caused people to kill showing halluctnations and Mulder nearly got shot by an infected Scully who thought he betrayed her to the cancer man. In Videodrome they bragged their service could be hidden under a test pattern. This isnt like a bomb because everyone had a TV then and its a mass infection on anyone who sees the bars. My point is it CAN be used as a weapon like anything else and Tom Foolery is a test patterns weakest flaw. A ghost can use static but the living can alter a test pattern and in the wrong hands it can kill a LOT of people so it is HARDLY impractical esp. since some nutjob wont give a flying rats ass how many he kills

  • @SouthernRailfan
    @SouthernRailfan Před 4 lety

    It wasn't that loud. Wasn't bad at all.

  • @erylgriffiths1044
    @erylgriffiths1044 Před 10 měsíci

    Loud

  • @shizuchuan
    @shizuchuan Před 5 lety +1

    Only the one who likes this?

    • @flatcapman
      @flatcapman Před 4 lety

      not only the one I love this tone and even use it as self ID. This tone can hypnotise me so I can sleep with my eyes open. I go into a trance

  • @-ikamaru-1850
    @-ikamaru-1850 Před 4 lety

    telephone sound

  • @Dinofelis999
    @Dinofelis999 Před 2 lety

    My voice tone is over 400 hz.. 😇😂 and lowest note is almost 60 hz

    • @flatcapman
      @flatcapman Před 2 lety

      A human voice never goes over 40hz sorry to say. Unless your not human

    • @jamesperis9040
      @jamesperis9040 Před rokem

      @@flatcapman your not human

  • @slackin8029
    @slackin8029 Před 11 měsíci

    Yeah no my headphones are broken

  • @MaYa-db3ux
    @MaYa-db3ux Před rokem

    It’s Japanese dial tone.

  • @Mimi-sf5sq
    @Mimi-sf5sq Před 5 lety +1

    I find this annoying. Other hertz frequencies are ok. This gave me a headache.

    • @flatcapman
      @flatcapman Před 4 lety

      @Mrs Mimi H My 2 older brothers found me watching an Australian Test Pattern with this tone going and I was in a trance like state like I was asleep with my eyes open. They switched it and that snapped me out of it but with a shocked and loud UGHHHHHHHH. I got told off "that's not a sci fi show THATS A TEST PATTERN MAN" They explained what that was

  • @_paisleymchugh_2346
    @_paisleymchugh_2346 Před 2 lety

    This sound scares me-

    • @flatcapman
      @flatcapman Před 2 lety

      You sound better then ladies saying it turns them on THAT scares me

    • @_paisleymchugh_2346
      @_paisleymchugh_2346 Před 2 lety

      @@flatcapman im- LMFAO- yeah this definitely does NOT turn me on- it turns me o f f

    • @flatcapman
      @flatcapman Před 2 lety

      @@_paisleymchugh_2346 I think it wasn't meant to be aimed at a person. More like a 1000hz tone

  • @SLN_MUSIC
    @SLN_MUSIC Před 3 lety

    Qui enlève l’eau de son tel

  • @thelegndeofficial7570
    @thelegndeofficial7570 Před 3 lety

    Wtf

    • @flatcapman
      @flatcapman Před 2 lety

      its a test tone for TV back in the day to test Audio

  • @Owlhousespecial
    @Owlhousespecial Před 2 lety

    Did you know Travis scott played 400Hz at his concerts?!

    • @flatcapman
      @flatcapman Před 2 lety

      he played the Sine wave tone?

    • @MaxiiBoii23
      @MaxiiBoii23 Před 2 lety +1

      You fell for the 4chan trolls 😭😂

    • @flatcapman
      @flatcapman Před 2 lety

      @@MaxiiBoii23 who the hell are they? One of your fave rock groups?

  • @williamcase426
    @williamcase426 Před 3 měsíci

    BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO