Can someone explain a few simple things.

paulr

Active Member
In plain English please.

What is Bass
What is treble
What is frequency
What is db

Just trying to get my head round these concepts.
Thanks
Paul.
 
S

smallman28

Guest
The following may not be totally accurate as its not really my thing but here goes.

Bass, typically between something like 20Hz and 200Hz?
Treble,usually describes frequencies above 1000Hz?

Frequency, the range of sound that a speaker can produce or what your ears hear.
Something like 20Hz is a low frequency and 20KHz (20,000Hz) is a much higher frequency basically high and low notes.

db is a measure of the sound level something like 60db is considered normal background noise and 150db would be something like a plane taking off.

Sometimes speakers are also rated in a db scale and basically the higher a speakers db figure the easier it is for the amp to drive (I think!).

I am sure someone else will jump in with better explanations and some revelant links as that is a rough explanation in the most basic of terms given my basic undersatnding and I might not be entirely right!
 

Apocalypse

Standard Member
You've explained that very well smallman, straight to the point and in plain english like the thread starter wanted.

Now that you're on a roll smallman perhaps you can explain the theory of relativity in plain English :devil: :D
 

Reiner

Active Member
smallman28 is pretty much spot on, some additional comments though:

What is Bass
Low frequencies of a music signal

What is treble
High frequencies of a music signal

Note there are also mid frequencies: When a speaker has a 2-way design (two drivers) the bass and mids are reproduced by the "bigger" driver (called a mid/bass driver) while the tweeter reproduces the treble only.
A 3-way design would split the incoming signal into bass, mids and treble, thus having 3 drivers.
The crossover (x-over) inside the speaker casing will perform this function.

What is frequency
A measure of cycles per second, i.e. how often in one second the signal changes the polarity (from positive to negative). The unit for that is called "Hz" (Hertz)

This can be applied to e.g. AC mains power (60Hz) or music (20Hz-20kHz), voice is typically around 300-3400Hz.

When you refer to frequencies like "from x to y" it's called a 'frequency range' or bandwidth.

What is db
A measure for amplification or sound pressure. A 3dB increase equals to doubling the output power.
10dB are perceived as doubling the volume.

Also the sensitivity of speakers is measure in dB and as smallman correctly says, the higher the easier to drive (less load to the amplifier).


As for the relativity theory:

Everything is relativ. :clown: :D
 

Ian J

Banned
Originally posted by paulr
In plain English please.

What is Bass
What is treble
What is db
What is frequency


very simple :-

Treble = Top Bits
Bass = Bottom Bits
Db = Dangly Bits
Frequency = The number of times the above get used.

Incidentally, relativity is illegal in this country
 

kevb

Active Member
Originally posted by Ian J
Incidentally, relativity is illegal in this country
Not in the forest of dean. Have you seen them down there.:eek:
 

baileych

Standard Member
Originally posted by Reiner
Also the sensitivity of speakers is measure in dB and as smallman correctly says, the higher the easier to drive (less load to the amplifier).

/me puts on nerd hat

Actually sensitivity is measured in dB/W measured at a standard distance (1m) from the speaker.

What HiFi says dB/W/m but this can't be right as if you get 1dB for your watt at 1m your not going to get 500dB for your watt at 0.5km :p

/me removes nerd hat

Charles.
 

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