help mga sir about compressor limiter

[acdsee]

meron p kaming sound system usually gamit sa band, may question is paano po ba ang tamang paggamit ng compressor limiter? behringer pro xl ang model na nandun sa set-up namin...... di ko po ma utilize masyado kc di ko rin masyado maintindihan yung expalnation sa manual at nawala na rin yung manual....like 1. after or before EQ ba ang palacement ?  2. bakit pati reverb at minsn yung mga dulo ng tunog naka-cut nya?  3. what is threshold, expander/gate, de-esser, dynacmic enhancer? $. pano talaga ito makakatulong na hindi maaapektuhan ang quality ng sound?  thank you......

[skunkyfunk]

meron p kaming sound system usually gamit sa band, may question is paano po ba ang tamang paggamit ng compressor limiter?

Maraming puwedeng paggamitan ang compressor.  Madalas siyang gamitin sa isang individual track or signal, kagaya ng kick drum, snare drum, o vocal signal, pero puwede rin gumamit nito sa isang stereo buss (or mix).  Ang silbi nito ay para mapantay ang overall volume level ng isang signal upang maging mas consistent ang volume, pero kung minsan, ginagamit din ito para maging mas "explosive" ang drum sounds.  Maaring gamitin ang isang compressor sa inserts ng isang mixer, para sa individual tracks, puwede rin siya sa fx loop ng mixer (pero di ito common practice), at puede rin siya ilagay sa stereo bus ng mixer.

behringer pro xl ang model na nandun sa set-up namin...... di ko po ma utilize masyado kc di ko rin masyado maintindihan yung expalnation sa manual at nawala na rin yung manual....

Download ka ng manual sa Behringer.com

like 1. after or before EQ ba ang palacement ? 

Mas madalas gamitin ang compressor AFTER EQ dahil pag nilagay mo siya before EQ, malaki ang posibilidad na mag-PEAK ulit ang signal pagkatapos ma-compress ng compressor.  Pero hindi ito general rule.

2. bakit pati reverb at minsn yung mga dulo ng tunog naka-cut nya? 

Malamang ginagamit mo ang compressor bilang isang NOISE GATE.  Halimbawa, pag may signal ka na may reverb, nala-cut niya yung reverb tails ng signal depende kung gaano kataas ang threshold ng gate.

3. what is threshold, expander/gate, de-esser, dynacmic enhancer?

Threshold - ito ang volume level kung saan nag-uumpisang mag compress or mag-expand ang isang signal, depended kung ano ang setting na ginawa mo.

Expander - Kapag ginawa mong expander ang setting ng compressor, lahat ng signals na lumalampas sa threshold ay lumalakas depende sa ratio na ginawa mo.  Halimbawa, kung ang threshold mo ay -9dB, at ito ay naka-set sa EXPANDER mode, at kung ginawa mong 1:3 ang ratio, lahat ng signals na beyond -9dB ay magiging mas malakas 3x ng original na signal.

Gate - ito ay opposite ng expander; halimbawa meron kang threshold na -15dB, ibig sabihin, lahat ng signals below -15dB ay maka-cut.

De-esser - ginagamit ito sa pamamagitan ng pagcompress ng isang narrow bandwidth (around 6kHZ-9KHz) para mabawasan ang kalansing ng isang signal.

Dynamic expander - eto ang ginagawa ng compressor kung siya ay naka-set bilang EXPANDER.

$. pano talaga ito makakatulong na hindi maaapektuhan ang quality ng sound?  thank you......

Ang compressor ay nakakapag-paiba talaga ng tunog, gaya ng lahat ng signal processor.  Pero ang pinakamagandang settings ng compression ay depende sa tunog na hanap mo.

Maganda kung magbasa ka ng konti tungkol sa ADSR para malaman mo kung paano gumagana ang comps.

[KitC]

Nice explanation, skunkyfunk!

Btw, pwede ang compressor before AND after EQ. For ex., gusto mong medyo malakas ang bass (hiphop, maybe?    )pero contained ang peaks so pwedeng may compression after EQ for peak limiting. May mga kaso na nawawala ang mga high frequencies after compression kaya pwedeng maglagay ng EQ after compression para i-boost ng konti ang highs.

[progressive_pilipinas]

Marami akong natutunan. Salamat sa inyong lahat. Sige po at ako ay yayao na. 

[starfugger]

yeah, nice one skunk.  straight forward and simple.

[stanley]

mga sir,  paki explain po in laymans term itong nabasa ko about EQ "bass track lies in the 60 Hz to 150 Hz range and that pop'n'snap thing is up there around 2.5kHz to 3kHz or so. 1.di ko alam kung paano pihitin ito sa 10 band EQ, 2. Paano din ito pipihitin sa Parametric at Graphic.  maganda po sana kung may visual ng EQ para lalo kong maintindihan. thanks.

[acdsee]

salamat po sa lahat.......napakagandang paliwanag.

[KitC]

mga sir,  paki explain po in laymans term itong nabasa ko about EQ "bass track lies in the 60 Hz to 150 Hz range and that pop'n'snap thing is up there around 2.5kHz to 3kHz or so. 1.di ko alam kung paano pihitin ito sa 10 band EQ, 2. Paano din ito pipihitin sa Parametric at Graphic.  maganda po sana kung may visual ng EQ para lalo kong maintindihan. thanks.

Why go visual? This is about sound... about music. Graphic representation only makes it easier to identify frequency ranges but shouldn't you use your ear when EQing? While it matters when using different kinds of EQs, you still use your ear to adjust frequencies to your liking, and never use your eyes di ba? As for a 10-band EQ, it's merely the entire frequency range divided into 10 individually adjustable, fixed frequency bands on a logarithmic scale. If they say 60 to 150 hhz yet your eq only has 83 hz then 160, then adjust the 83 hz, it's that simple.

What I suggest is taking a particular track like the above and going through extreme eq adjustments (full up, full down) so that you can hear what pop/snap (or bass) is supposed to be like. The rule of thumb is that once you adjust something to what you like, audiowise, back off a bit because it's usually too much.

Don't use your eyes too much when it comes to sound. Use your ears; that's what they're there for.

[stanley]

sir kit, i got your point na dapat talaga ears, but the thing is di ko talaga alam "kung anong slider or knob ang gagalawin ko para iadjust", the Sonic Foundry 10 band Graphic EQ look like this   28hz, 56, 113, 225, 450, 900, 1.8k, 3.6, 7.2, 15k,  so when you say 83hz ang gagalawin ko ba ay yung 56hz para iadjust from 60hz to 150hz at wala nang ibang slider na gagalawin. dont know if tama pagkaintindi ko. 

[KitC]

If you are concerned with bass, for ex., which was defined to fall in between 60 and 150 hz, you should then move the 113 khz slider since it falls in between the range in question. Each band in a graphic EQ does not only affect that particular frequency, but a 'span' or range of frequencies.

I know what you mean when you don't see the same values on a graphic EQ as compared to a parametric. The thing is, a graphic EQ is divided into logarithmic bands, not equally divided across the scale. The reason for this is because  they represent the entire audible frequency range across a virtual piano keyboard. The whole audible frequency spectrum spans approx. 10 octaves and as you will notice from the bands, an increase of 1 octave is actually a doubling of frequency. (28 hz, 56, 113, 225) These numbers are the 'center' frequency of the band and in the Sonic Foundry scale, it approximates the key of 'A' in a 12-tone equal tempered scale. In a 10-band EQ, each band covers a span of one octave, 20-band is 1/2 octave and 31-band is 1/3 octave.

[stanley]

thanks sir kit,  isa pa sir, when can i use parametric, graphic, paragraphic EQ's, is it by choice or theres a rule of a thumb, may kinalaman ba ang mga type of songs sa kung anong EQ ang gagamitin ko, or just to control the high and lows of any songs. thanks.

[KitC]

thanks sir kit,  isa pa sir, when can i use parametric, graphic, paragraphic EQ's, is it by choice or theres a rule of a thumb, may kinalaman ba ang mga type of songs sa kung anong EQ ang gagamitin ko, or just to control the high and lows of any songs. thanks.

Graphic EQs usually have multiple bands but have fixed center frequencies. It can get a bit problematic when you want to home in on a particular frequency. This is when you use parametrics. Parametric EQs tend to be more precise; these are usually used when you want to surgically excise a problematic frequency like 60 hz hum or a strange ringing note. Graphic EQs, because of their wide frequency range per band, are incapable of those precise cuts or boosts. SF's paragraphic merely combines the qualities of both graphic and parametric if I remember correctly.

There is no set rule when using EQs on a per song basis. Initially, EQs are inserted per track to help you massage each track so that it fits in the overall sonic space. In the context of the general mix, a mastering eq is often used because it is more precise and often more 'musical'.

Familiarize yourself with each EQ type since that is often the first thing that gets adjusted during mixing. What you will find usually in DAWs are parametrics, though.

[stilljey]

maraming salamat sir kit, congrats nga pala sa initial podcasting maganda, God Bless.