Hi Tsufifnik,

Could you please first of all say:
a. What exactly bothers you with the room, and
b. Do you intend to use it for both rec. and mixing?

Assaf.

Hi Tsufifnik,

ציטוט:

אני יכול גם לקנות מיורם לב (או מכל מקום אחר, אבל הוא נראה לי הכי מקצועי) ספוגים ולהדביק אותם על התקרה. מה בדיוק היתרון של המטריה הנ"ל?

When recording with a mic, assuming you're in the middle of the room, the ceiling is the closest surface and hence it reflects the earliest. I'm also assuming it's bare, unlike the rest of the surfaces in the room. This probably gives the sound a very "small-room" quality.

ציטוט:

אסף - אני רוצה לקבל פחות "צבע" מהחדר, בהקלטת קונדנסר C4000B, ואם אפשר - גם לקבל פחות רעשים מבחוץ.

Noise is one thing. What you should ask yourself is - what's the weakest link.
A 1 square cm hole in the wall can irradiate more acoustic power than the entire walls in your room.
You also have to ask yourself (I'm actually asking) what's the most troublesome source of noise?
Obviously you're not going to thicken walls or build floating ceilings, but a lot can be gained by treating the weakest link.
Or are you troubled because of, say, the fan noise in your computer?
So those are my 2.5 questions.
As for coloration - best places to start applying absorption is the corners. Try treating them *first* and see how it improves the sound.

ציטוט:

החדר משמש גם להקלטות וגם למיקסים.

I just asked because both have different acoustical requirements.
I'm not yet entirely sure how to think about mixed rooms (rec + mix), probably because I'm not a trained acoustician.

Regards,
Assaf.

Hi,

First, a disclaimer - I'm not a trained acoustician, please take any advice enclosed with a grain of salt.

For the noise problem: so according to what you've said there are no appreciable noise source s within the room.
This leaves us with two sources of noise:
1.) Structure-borne noise, i.e. one that is generated within the house and travels throughout the walls/foundations into your room.
2.) Noise from outside, which is mainly air-borne.

Structure-borne noise is a bitch to treat. Two main points:
a.) Do NOT layer your room with absorbing material, it will not noise proof it.
b.) How far are you willing to go? (add an extra wall?)
My guess is the main body of noise comes in through the door. What's your door like?
However, the best piece of advice is: save your money and record whenever your sister is quiet

As for the cars from outside - they're much easier to treat, but you once again have to deal with the window. You don't have to rebuild the window, but you can do wonders by installing an extra glass shutter. This can cost the same as a new window and the question is, are you willing to make the effort?

Regards,
Assaf.

PS
Excuse the form of the message, I'm writing from an old Silicon Graphics terminal, it's killing me! I can't even press the "English" button on the top.