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shaunnutley

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shaunnutley

Funnels and sound attenuation

I know that a a 1ft funnel that is placed to a sound source, such as a small speaker with a continous, same-pitch sound playing will increase the decibel reading substantially at the other end of the...
14:38 Mon 26th May 20081 answer, last by beso 15:01 Mon 26th May 2008
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shaunnutley

Binary numbers and Octets

How many octets are there in the binary number 1010? I woukld like a specific answer.
17:27 Tue 04th Mar 20081 answer, last by squarebear 17:39 Tue 04th Mar 2008
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shaunnutley

TCP segment headers and converting to octets and binary numbers

if a TCP segment's 4-bit header length is represented by the denary number 10 then how many octets would this be? I calculated this to convert to 1010 as a binary number and then to 12 octets. Could...
01:44 Tue 04th Mar 20081 answer, last by ACtheTROLL 15:43 Tue 04th Mar 2008
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shaunnutley

Shouting and Frequency

When men shout loudly what is the frequency range of their voices?
16:49 Thu 06th Dec 20071 answer, last by wildwood 04:20 Fri 07th Dec 2007
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shaunnutley

Perception of Sound and Earplugs

Earplugs can be rated according to the number of decibels they reduce sound by, and this could be NRR or SNR. I have noticed on websites that earplugs can be used to block loud industrial noise....
20:33 Wed 21st Nov 20073 answers, last by thechymist 13:26 Sun 25th Nov 2007
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shaunnutley

RF Signal Detector query

I have a RF signal bug detector. Its range is 50MHz to 6GHz. I have noticed that even when my mobile phone is switched of and the battery removed the detector still picks up a strong signal. I should...
03:08 Wed 31st Oct 20072 answers, last by jammerchell 10:56 Mon 15th Oct 2012
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shaunnutley

Comparing Voice and Impact Noise Sound Attenuation (2)

Thanks for the answer to my earlier question - further to this i will now increase the decibel level. Comparing Voice and Impact Noise Sound Attenuation If a person's voice of 100dB attenuates by 60dB...
20:47 Sat 20th Oct 2007
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shaunnutley

Comparing Voice and Impact Noise Sound Attenuation

If a person's voice of 80dB attenuates by 50dB over 60ft (real-ear attenuation) through the air, with no buildings in between, how does a banging external door of also 80dB compare? Does anyone have...
20:36 Fri 19th Oct 20071 answer, last by tubeway 17:33 Sat 20th Oct 2007
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shaunnutley

Pulse sounds and Ear muffs

I recently bought a pair of ear muffs and on the packaging it states the real-ear attenuation data was obtained using a continous sound and pulse sounds might produce different attenuation data. Why...
17:28 Fri 12th Oct 20071 answer, last by mibn2cweus 19:53 Fri 12th Oct 2007
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shaunnutley

Hearing differences in a Stereo Speaker & the Human Voice

I've noticed that i can hear a man's voice at 70dB and at a distance of 50ft with a pair of ear muffs on, but i cannot hear one stereo speaker at the same volume from the same distance away. Why is...
14:14 Thu 11th Oct 20074 answers, last by mibn2cweus 08:47 Fri 12th Oct 2007
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shaunnutley

Ear plugs & 90dB headphones sound 'blocking' combination

I have noticed that when i insert a pair of ear plugs with an SNR of 30 and wear a pair of headphones over these which have a continous noise of 90dB the combined effect of the ear plugs and...
15:01 Sun 07th Oct 20071 answer, last by riskman 18:05 Mon 08th Oct 2007
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shaunnutley

Tar levels and rolling tobacco

I am wondering about the tar levels in rolling tobacco as opposed to pre-made cigarrette tobacco. I've noticed that the manufacturer does not state the tar or nicotine levels for my tobacco. I've...
19:06 Sun 30th Sep 20074 answers, last by gkandpal 10:51 Sun 16th Oct 2011
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shaunnutley

Sound Attenuation Calculation

I'm trying to work out how much I can hear through a thin external wall in a house and an extra 75ft beyond this wall. I believe that I would not be able to hear 50dB from 75ft away in a straight line...
02:58 Fri 21st Sep 20073 answers, last by mibn2cweus 06:06 Fri 21st Sep 2007
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shaunnutley

Line Source Sound & Propagation

I have read that five cars spread over a road 100ft long can be considered to be a line source when taking into consideration sound propagation. Firstly, if these five cars cover a length of 100ft,...
20:07 Thu 20th Sep 20071 answer, last by mibn2cweus 23:13 Thu 20th Sep 2007
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shaunnutley

Impact noises & hearing thresholds

If somebody is moderately deaf with a hearing threshold of 50dB and they cannot hear a dog barking at 50ft away which is 80dB, will they also not hear a 80dB impact noise from the bang of a door also...
01:26 Tue 11th Sep 20072 answers, last by tubeway 10:12 Tue 11th Sep 2007
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shaunnutley

Low-pitch pulse noises & sound attenuation

If a a very powerful audio speaker is emitting a pulsing bass sound from a window sill at 100 decibels into afreefield, outside enviroment will this have any effect on the general rule that sound...
01:05 Tue 11th Sep 20072 answers, last by tubeway 10:07 Tue 11th Sep 2007
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shaunnutley

Amplication and Sound Volume

If someone has a hearing threshold of 40dB and an amplifier amplifies a sound of 20db by another 20dB to make it 40dB will the person be able to hear the sound without increasing the sound volume to...
20:02 Sun 09th Sep 20072 answers, last by tubeway 10:38 Mon 10th Sep 2007
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shaunnutley

Shared bandwidth and a 10 computer WLAN

I am thinking of installing a wireless local area network but am confused over the data rates for the 10 computers that will share the bandwidth of the WLAN. if i have one 54Mbps wireless router...
22:31 Wed 22nd Aug 20072 answers, last by ll_billym 10:43 Thu 23rd Aug 2007
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shaunnutley

Internet researchers?

I need somebody to conduct research via the internet regards to finding nursing/care/residential homes in the South East of England which are at least 100ft from the nearest house. What sort of...
23:14 Sat 16th Jun 20072 answers, last by bednobs 17:12 Sun 17th Jun 2007
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shaunnutley

HTML underlining problem

I have a HTML template in which you can edit in Microsoft Word.and add your own text. The problem is i've added some text, saved it, and when i open it again in Internet Explorer the text is...
17:58 Sat 09th Jun 20071 answer, last by heathfield 20:01 Sat 09th Jun 2007

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