Umfrage

Can You Hear A High Frequency 'Squeal' Your Colour TV ?

1. Yes		(50 %, 6 Stimmen)
2. No		(50 %, 6 Stimmen)

(Die Umfrage ist beendet)

Can You Hear A High Frequency 'Squeal' Your Colour TV ?

Autor

Beitrag

Amp_Nut
Inventar

#1 erstellt: 30. Jun 2006, 06:46

All Conventional ( CRT Tube based, Not LCD & Plasma ) Colour TVs emit a High Frequency Squeal, when operating.

Would like to know, if you can hear this sound. ( I cant

)

Thanks for participating in this poll.

ani
Stammgast

#2 erstellt: 30. Jun 2006, 09:10

Amp nut some of the PC smps too squeal and most of the squealing ones have developed powersupply related faults

Shahrukh
Inventar

#3 erstellt: 30. Jun 2006, 09:15

No. Guess age is catching up on me too.

Savyasaachi
Inventar

#4 erstellt: 30. Jun 2006, 10:35

This 'squeal' is emitted from CRT monitors as well..mine does..sometimes its unberable..
however, my TV doesn't..

Amp_Nut
Inventar

#5 erstellt: 30. Jun 2006, 13:00

Thanks ani, Shahrukh & Savyasaachi.

The reason I have Spicifically referred to Colour TVs, is that 'squeal' is at EXACTLY 15.25 KHz.

SMPS, and other stuff could 'squeal' any any freq.

Come guys,

be honest and answer this poll. I have Not asked for names.

Just 5 answers....

SUB_BOSS
Gesperrt

#6 erstellt: 30. Jun 2006, 13:26

Come guys, be honest and answer this poll. I have Not asked for names.

Chief I have voted and my vote is "Not heard" frankly I have not heard or my tin ears fail to hear them

But yes I do hear a very high freq squeal if I watch TV for too long..don't you all married fellow audio bugs agree

[Beitrag von SUB_BOSS am 30. Jun 2006, 13:36 bearbeitet]

bombaywalla
Stammgast

#7 erstellt: 30. Jun 2006, 14:30

Amp_Nut schrieb:

All Conventional ( CRT Tube based, Not LCD & Plasma ) Colour TVs emit a High Frequency Squeal, when operating.

Would like to know, if you can hear this sound. ( I cant

)

Thanks for participating in this poll.

:prost

I'm afraid that I can hear it!

it's quite annoying at 1st but as the I get into the program or movie I'm watching, I forget about it. During quiet segments, it becomes prominent.
Ach, the "squeal" is the field rate! I think that this is 15.75KHz for NTSC.

Arj
Inventar

#8 erstellt: 30. Jun 2006, 15:13

very thankfully, NO.

but my son has a squeeky toy he leaves invariably on my work seat and that squeals irrtatingly every tome i park myself in front of the CRT

Manek
Inventar

#9 erstellt: 30. Jun 2006, 15:39

I have noticed this before that I can hear it with my right ear and not very well with my left......

maybe I'm on the verge of getting old, one ear at a time ....hee hee .

manek.

Amp_Nut
Inventar

#10 erstellt: 01. Jul 2006, 03:44

the "squeal" is the field rate! I think that this is 15.75KHz for NTSC.

Bombaywalla, You are correct. Actually it was my typo. Thanks for pointing it out.

Fot India, which uses the PAL B/G TV System, its 15.625 KHz ( Not 15.25 KHz )

For the USA its 15.734kHz

Amp_Nut
Inventar

#11 erstellt: 01. Jul 2006, 04:11

High Freq hearing Does diminish with age.

I think I lost my 15K hearing at around 45 years. ( a am now 49)

Would be interesting to know of age linked to the 15K hearing ability....

Manek
Inventar

#12 erstellt: 01. Jul 2006, 06:01

Amp...I'll let you know for sure when I get at 45

BTW how many of us have had our ears cleaned professionally ? I'm thinking of getting it done from an ENT. I'm think clogged ears prevent us from hearing high frequencies clearly....

Manek.

abhi.pani
Inventar

#13 erstellt: 01. Jul 2006, 16:45

Manek schrieb:

I'm thinking of getting it done from an ENT. I'm think clogged ears prevent us from hearing high frequencies clearly....

Manek.

That looks like one more audiophilic tweak....

Next could be to get our nose cleaned so that our breathing noise is decreased and we get to hear clean sound from our setup...

kspv
Ist häufiger hier

#14 erstellt: 02. Jul 2006, 17:22

I hear it prominently for the first 5 minutes after switching on the TV, but don't get to hear it once I get immersed in the programs. My ears, it appears, forget about the 'squeal' after sometime.

SUB_BOSS
Gesperrt

#15 erstellt: 03. Jul 2006, 10:01

I'm thinking of getting it done from an ENT. I'm think clogged ears prevent us from hearing high frequencies clearly....

Best tweak..actually as long as you have snot in your ears you don't get to hear sound clearly, so another from our Chief. The most noticebale diffrence I have seen is swithcing off the ceiling fan and trying to take off grilles will make sound a little transparent.

bombaywalla
Stammgast

#16 erstellt: 03. Jul 2006, 13:23

[quote="Amp_Nut]

For the USA its 15.734kHz[/quote]

like-wise, Amp_nut, you are exactly correct: one has to divide 15.75KHz by 1.001, which is the factor by which the field rate was reduced from 60Hz so that the beat pattern created between the colour carrier & the sound carrier was minimized.

Amp_Nut
Inventar

#17 erstellt: 04. Jul 2006, 17:28

Thanks Bombaywalla,

Interesting info. I had not tied the numbers together like that ...