What is Q ?

  • Thread starter Thread starter grimtraveller
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"Q", is the 17th letter in the English alphabet, preceded by P and followed by R.

He is that guy that makes all of those cool devices for Bond - James Bond.
Considering Greg and Miroslav already served up those jokes, it's not unfair to conclude that you've not read this thread.
Naughty newbies ! :D

Actually, the maths for working out the Q isn't all that tricky. It's to do with the centre frequency of the filter and the frequencies above and below this where the change is 3dB less than the maximum.
The maths for working out the Q probably isn't all that difficult ~ unless you happen to be a maths O level failure like moi !
 
If you're that bad at maths, perhaps you should consider a career in investment banking!
 
Guilty as charged.

The thread got my attention because I had never heard of filter bandwidth referred to as Q.
After I learned what it was, I didn't read on.

My apologies for the regurgitated humor. I will be more diligent in the future. :facepalm:
 
Could some of you please describe exactly what 'Q' is and how it's applied {if that's the word} ? In plain simple language that a 9 year old could understand. All the explanations I've come across thus far seem to require a Masters degree in deep space interplanetary excavation and a torrid affair with a Phd in medieval linguistics to grasp. And I'm none the wiser.......


The Semitic sound value of Qôp (perhaps originally qaw, "cord of wool", and possibly based on an Egyptian hieroglyph) was /q/ (voiceless uvular plosive), a sound common to Semitic languages, but not found in English or most Indo-European ones. In Greek, this sign as Qoppa Ϙ probably came to represent several labialized velar plosives, among them /kʷ/ and /kʷʰ/. As a result of later sound shifts, these sounds in Greek changed to /p/ and /pʰ/ respectively. Therefore, Qoppa was transformed into two letters: Qoppa, which stood for a number only, and Phi Φ which stood for the aspirated sound /pʰ/ that came to be pronounced /f/ in Modern Greek.
In the earliest Latin inscriptions, the letters C, K and Q were all used to represent the sounds /k/ and /g/ (which were not differentiated in writing). Of these, Q was used to represent /k/ or /g/ before a rounded vowel (e.g. "EQO" = ego), K before /a/, and C elsewhere. Later, the use of C (and its variant G) replaced most usages of K and Q: Q survived only to represent /k/ when immediately followed by a /w/ sound.[2]
The Etruscans used Q in conjunction with V to represent /kʷ/


Pretty simple stuff, really....
 
The Semitic sound value of Qôp (perhaps originally qaw, "cord of wool", and possibly based on an Egyptian hieroglyph) was /q/ (voiceless uvular plosive), a sound common to Semitic languages, but not found in English or most Indo-European ones. In Greek, this sign as Qoppa Ϙ probably came to represent several labialized velar plosives, among them /kʷ/ and /kʷʰ/. As a result of later sound shifts, these sounds in Greek changed to /p/ and /pʰ/ respectively. Therefore, Qoppa was transformed into two letters: Qoppa, which stood for a number only, and Phi Φ which stood for the aspirated sound /pʰ/ that came to be pronounced /f/ in Modern Greek.
In the earliest Latin inscriptions, the letters C, K and Q were all used to represent the sounds /k/ and /g/ (which were not differentiated in writing). Of these, Q was used to represent /k/ or /g/ before a rounded vowel (e.g. "EQO" = ego), K before /a/, and C elsewhere. Later, the use of C (and its variant G) replaced most usages of K and Q: Q survived only to represent /k/ when immediately followed by a /w/ sound.[2]
The Etruscans used Q in conjunction with V to represent /k
Now that, I understood with my eyes closed ! :D
 
Mass confusion like this is why I never speak in terms of Q. I just say "wide" or "narrow".
I'm inclined to agree but given that Q turns up in a number of things I come across, I may as well know exactly what is. It's like knowing what "transmission loss" is or "transubstantiation" !
You never know, it may be that million pound question that comes up on "Who wants to be a millionaire"........
 
What is love?

Oh baby, don't hurt me..
Don't hurt me no more.

Q is pretty much the same thing, only slightly different.
 
And actually, THIS is Q...

Q.webp
 
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