Do you have this sound problem in FSX?

[duckbilled]

Since last summer I have been trying to figure out a sound problem I have been having in FSX. Basically, it is a swooshing sound generated by the engines and it can best be described as phasing. Whether the description is accurate, I am not sure. I have changed drivers, purchased a dedicated sound card, changed settings... Nothing fixes it. I have posted about it before here but it has been a while. The CLS aircraft (747, 767) have the problem and the TSS sounds for FS9 ported to FSX have it as well. The Quality Wings sounds don't have the same issue but they don't sound right either.

I have come to the conclusion that FS9 sounds can not be ported to FSX - at least with Windows 7. I just discovered a new thread in the CLS 767 forum that describes the same problem. I also looked up my old thread from January in their 747 forum and others reported the problem as well. At least I know I am not crazy.

It must have something to do with the differences between FS9 and FSX. All FSX TSS sounds are great. All TSS FS9 sounds in FSX sound terrible. Audio environment sounds good. Most default sounds are fine. The Aerosoft Twin Otter sounds have the problem but the Sonic Solutions Twin Otter sounds are good (FSX Native).

Another problem, which may be related to the above issue, is odd rpm levels when switching views. In some aircraft, even default ones, you can switch back to the vc and the engines will sound as if you are going full throttle even if at idle. I know this problem exists and so does Sonic Solutions because they say this on their Simmarket Twin Otter Page, "Doesn't suffer from common problems such as incorrect RPM's on view switching."

So, have you had this issue?

If so, do you have a solution?

Do you know what causes it?

Maybe our systems have something in common? ( I am pretty sure many people don't have this issue)

Could it be that developers are not testing their sounds fully in FSX or they are not testing them with Acceleration, Windows 7 or some other common combination of software?

[gandy]

I have this issue with my cls 767 and a few other aircraft, I do think its caused by the sounds being for fs9 and the sound set up in the sound.cfg is for fs9 more than fsx.

How to fix, not sure unless you create a new sound set for the aircraft or download one that uses fsx tss.

I have been editing my sound.cfg for my 767 to change the volume of some of the sounds but nothing to an extent that fixes the issue.

[duckbilled]

Right now I have replaced all of my FS9 sounds with appropriate TSS/Sonic Solutions stuff. I also have Audio Environment which had a few sound packs (created by TSS).

This, of course, is a workaround until the developers fix this issue. IMHO, the entire aircraft should work in FSX, not just 90%. I don't think this issue has been well publicised so I don't fault the developers. In addition, it is very hard to describe without a video.

The developer of Sonic Solutions said he would help diagnose the problem but I would need to install FRAPS and upload a video to YouTube. I haven't had time to do that yet. Can you upload a vid?

[gandy]

I would if i have not edited the sound files as they will need to hear the sound in its default state.. and i cant undo what i have done unless i do a fresh install of the aircraft which i dont want to do at the moment.

[gandy]

Ive posted on the cls forum on how to recreate the sound phasing effect but i have to wait for the post to be approved :eek:

[duckbilled]

Great. I'll look for it.

[Daveo]

CLS has a lower quality soundset in their downloads section to help take care of that problem. You need your original install key to install it.

[gandy]

Ah im a just flight customer for the cls 767 so there is no sound set for me.

Anyway ive fixed it for the 767-300 with Rolls Royce engines.

Upon digging a little deeper on this issue i did find that stereo sound samples can cause this issue in fsx ( fs9 does not have this issue ) so i checked the cls sounds, I did find that there was a mixture of mono and stereo sounds being used at the same time and they used two different sample rates for them all ( 44k and 22k ). By converting all the stereo sounds to mono the issue went and no more engine sounds phasing all over the place. I also found there the left and right channels did not always have the same loudness and that there could be up to 20% difference between the two channels.

Converting the sound files to mono does not mean a loss in quality if you decide to try this duckbilled.

As soon as i can post on there i will post what i have posted here.

Paul

[duckbilled]

CLS has a lower quality soundset in their downloads section to help take care of that problem. You need your original install key to install it.

Thanks. I'll check it out.

BUT

reducing the quality shouldn't be the fix. The problem is they are advertising a FSX compatible product when it clearly isn't. In addition, with the threads posted about the problem in their forums, I have not seen a response that points to such a download.