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Search: Posts Made By: Okv
Forum: Subwoofers, Bass, and Transducers   07-05-2015, 11:05 AM
Replies: 3,427
Views: 115,863
Posted By Okv
Interesting that you find the lower 15hz more...

Interesting that you find the lower 15hz more powerful than higher frequencies.
Forum: Subwoofers, Bass, and Transducers   07-05-2015, 11:01 AM
Replies: 3,427
Views: 115,863
Posted By Okv
Exactly. But you do not need a sound...

Exactly.

But you do not need a sound intensity meter, if you measure particle velocity that will give most of the information needed, and practical experiments show good correlation between...
Forum: Subwoofers, Bass, and Transducers   07-04-2015, 10:04 AM
Replies: 3,427
Views: 115,863
Posted By Okv
Sometimes it is necessary to experience something...

Sometimes it is necessary to experience something to realize that established theories have been simplified too much to explain the whole picture.

Changing the delay on rear or front will affect...
Forum: Subwoofers, Bass, and Transducers   07-03-2015, 06:18 PM
Replies: 3,427
Views: 115,863
Posted By Okv
If you place an accelerometer on furniture or on...

If you place an accelerometer on furniture or on the floor, you do not measure sound intensity, you measure mechanical vibration.
This mechanical vibration is a result of the sound waves acting on...
Forum: AVS Forum Podcasts   06-29-2015, 03:00 PM
Replies: 155
Views: 3,627
Posted By Okv
From this review I read that I would prefer the...

From this review I read that I would prefer the theatrical.

But this single example of a theatrical - near-field is not typical of what they do on a near-field, according to the mixers who have...
Forum: AVS Forum Podcasts   06-29-2015, 01:23 PM
Replies: 155
Views: 3,627
Posted By Okv
Just wanted to point out that the number I gave...

Just wanted to point out that the number I gave for dialogue spl is valid only for comparison to the other movie I measured using the exact same measurement procedure, as the spl reading depend on...
Forum: AVS Forum Podcasts   06-29-2015, 01:16 PM
Replies: 155
Views: 3,627
Posted By Okv
Very interesting. This is quite contrary to...

Very interesting.
This is quite contrary to what FilmMixer says.
Is it possible that different producers and studios have different approaches for making a near-field?
Forum: AVS Forum Podcasts   06-29-2015, 01:12 PM
Replies: 155
Views: 3,627
Posted By Okv
I said earlier "I suspect the problem is not...

I said earlier "I suspect the problem is not limited to the near-field mix", and from what you are saying here, you confirm that the problems I pointed out for those movies are indeed not caused by...
Forum: AVS Forum Podcasts   06-28-2015, 01:43 PM
Replies: 155
Views: 3,627
Posted By Okv
I have noticed you participate in conversations...

I have noticed you participate in conversations on avs, I appreciate your comments coming from the production side and thank you for that, and also noticed that some of your movies - nearfield or not...
Forum: AVS Forum Podcasts   06-27-2015, 02:53 PM
Replies: 155
Views: 3,627
Posted By Okv
Today I measured spl during playback from an old...

Today I measured spl during playback from an old movie (1999) compared to a new one.
Turns out peak levels are the same, but rms is much louder on the new one.
Subjectively, and confirmed by the...
Forum: Speakers   06-26-2015, 01:35 PM
Replies: 24
Views: 475
Posted By Okv
And this is why different brands and models sound...

And this is why different brands and models sound different - they are made according to different criteria.

Some brands are more laid-back with a nice and smooth sound, others are made to sound...
Forum: Speakers   06-25-2015, 05:38 PM
Replies: 24
Views: 475
Posted By Okv
If they measure identical they sound identical. ...

If they measure identical they sound identical.

The problem is that it is very complex to measure all aspects of the sound, and it is also a complex process to analyze and quantify all the...
Forum: AVS Forum Podcasts   06-24-2015, 05:41 PM
Replies: 155
Views: 3,627
Posted By Okv
Indeed my memory was very wrong, Brian Vessa...

Indeed my memory was very wrong, Brian Vessa talks about why they use -10dB listening level for near-field, the -20dB number comes from where he talks about how -20dB was supposed to be 85dB...
Forum: AVS Forum Podcasts   06-24-2015, 02:56 PM
Replies: 155
Views: 3,627
Posted By Okv
Early in the video, I don't remember the exact...

Early in the video, I don't remember the exact wording, but he (Brian Vessa) started out with stating that something like -10dB would be a "better" playback volume level, and then goes on about the...
Forum: AVS Forum Podcasts   06-24-2015, 01:13 PM
Replies: 155
Views: 3,627
Posted By Okv
You lost me..

You lost me at the "..with todays LOUD movies we use -20dB" on this one.

This is a big fail, and I don't mean the technical details in the mix process, the fail is you do not recognize your...
Forum: Audio Theory, Setup, and Chat   06-20-2015, 09:04 PM
Replies: 43
Views: 890
Posted By Okv
I am an engineer and ronny31 is right.

I am an engineer and ronny31 is right.
Forum: DIY Speakers and Subs   04-03-2015, 05:45 PM
Replies: 358
  HzHorn
Views: 11,167
Posted By Okv
I find this interesting. It matches up with...

I find this interesting.

It matches up with my own experiences with bass horns, more or less.
They do sound different, also at lower volume.
More life-like, more punchy without being bloated,...
Forum: Subwoofers, Bass, and Transducers   04-03-2015, 08:46 AM
Replies: 3,427
Views: 115,863
Posted By Okv
This seems to be the best approach, even the...

This seems to be the best approach, even the lowest freqs can easily be felt when things move, but hearing or feeling the pressure is not necessarily so - some report they hear a 10hz, some say the...
Forum: Subwoofers, Bass, and Transducers   04-03-2015, 08:35 AM
Replies: 3,427
Views: 115,863
Posted By Okv
A dba - if it works properly - is like free...

A dba - if it works properly - is like free field, and all properties of the sound field are easily predictable.
Intensity is good and constant across the whole room, velocity is predictable and at...
Forum: Subwoofers, Bass, and Transducers   04-02-2015, 06:07 PM
Replies: 3,427
Views: 115,863
Posted By Okv
Unfortunately this is the case. In a sealed...

Unfortunately this is the case.

In a sealed room, with a normal subwoofer system where all units are playing in-phase, you will get a high pressure-gain as frequency goes down below the lowest...
Forum: DIY Speakers and Subs   03-23-2015, 07:55 PM
Replies: 24
Views: 767
Posted By Okv
I also found that the higher velocity was very...

I also found that the higher velocity was very noticeable at loud volumes, but not so much, if any at all, at lower volumes - if that is what you mean.

Considering the importance of this for...
Forum: Subwoofers, Bass, and Transducers   03-23-2015, 02:40 PM
Replies: 3,427
Views: 115,863
Posted By Okv
If you suspect the subs add movement due to them...

If you suspect the subs add movement due to them physically vibrating or moving, this effect will most likely be very, very small compared to what the sound pressure does to the large riser area.
...
Forum: Subwoofers, Bass, and Transducers   03-23-2015, 12:04 PM
Replies: 3,427
Views: 115,863
Posted By Okv
This is great, coolrda. Another tool in the...

This is great, coolrda.
Another tool in the box that gives a real improvement that does not need any double-blind testing to confirm there is a difference.

I have seen at least one other...
Forum: DIY Speakers and Subs   03-21-2015, 11:05 AM
Replies: 24
Views: 767
Posted By Okv
It is very likely Gizze is right, the experienced...

It is very likely Gizze is right, the experienced improvement in tactile feel is due to more velocity produced in the new set-up.

Look at the freq resp in the #1...
Forum: Subwoofers, Bass, and Transducers   03-20-2015, 07:41 PM
Replies: 3,427
Views: 115,863
Posted By Okv
Intensity depends on the phase relationship...

Intensity depends on the phase relationship between velocity potential and pressure as well, you can have very high velocity and close to zero intensity, such as in a standing wave.

With no...
Showing results 1 to 25 of 229

 
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