Tom,Certain people are not going to like the fact that you obviously know what you are talking about, regrading the sound issue :)

Yeah, it's not like Tom was trying to convince us that the PFD was really purple and then cry about me correcting them LOL.. Thanks for a informative post sir..Best Wishes,[h4]Randy J. Smith[/h4]http://www.rawbw.com/~bdoolin/shinault/southparkcartmad.gif[h3]I WANT MY 747![/h3]Caution! Not a real pilot, but do play one on TV ;-)

A question for TOM from the dude that started this whole thing.No contest from me to a dude that has been there and done that for some 30 years. However my question to you, TOM, based on what u said wouldnt it be safe to say that the cfm56 series, on a whole, would have much more of a whine than the GE90s? This coming from the simple fact u mentioned that the cfm blade diameter is significantly less than that of the GE90s.Whether or not U answer yes or no, Did I, in any one of my explanations, go wrong on any piece of info? Please let me know.

Hey Tom aka Thibben, I will not rest till I hear from u.

I know your out there somewhere Thibben.

Nameless againWhy don't you PM or email Tom?????? Both options are available in his post.Cheers,

Nameless,I had other things that were more important to do today than come to the forum. Secondly since you refuse to sign with your name I was tempted to ignore you but I thought others may be interested.As to your question, the CfM56 series will have a higher wine than the GE 90 series but I don't think that it would be all that apparent in the aircraft since most of the wine gets directed forward of the engine inlet and unless you are out in front of the aircraft there probably isn't that much difference. Engine inlets and cowls have had great improvements in sound attenuation over the years. Please don't expect PMDG to model noise from all around the engine so that if you go outside and stand in front of the aircraft you will hear it.Tom

my apologies guys on the name thing, Its pretty easy to forget these things when your a bit anxious to get info. The name is Gideon and u can be sure that it'll be at the bottom of this post."Please don't expect PMDG to model noise from all around the engine so that if you go outside and stand in front of the aircraft you will hear it." Now theres an answer that I can LIVE WITH in concerning their soundset. my doubts remain though.Some more questions for you:What do you think about using videos with sound that someone made from the inside of the aircraft and forward of the engine too get an idea of 1) what sounds the engineS are making at takeoff from idle setting to full power 2) how much of this whine/scream is heard at this stage of the flightIn my explanations on how and y these types of engines make the sounds they do, did I at any time err or make an incorrect statement?(Tom this is not directed to you) but let it be known though that this is one blouke who doesnt get rattled by what people say. I simply read into every line and letter and check it up with things i could find in books, everyday life, and elswhere. And if I rubbed any one of u guys during this post, my apologies - it wasnt my intention.Being a pilot in training, I value every single dollar in my possession. Therefore Im always asking myself, Is this the most cost effective action? and Am I getting my moneys worth? And if not, what can I do to make it worth my buck. And if I was a dude creating a panel-aircraft package I would model the sounds that come with it from a different perspective( which is what Im now thinking this all boils down to.) I would create a sound package based on the perspective of the pilots rather than what is heard aft of the engines.Tom thanks for your response, looking forward to your next one.Gideon.

Well you are free to make a sound set for the series Gideon, but one should not be dissapointed in PMDG's choice in this matter since it really is a minor item on most people's scale, at least on mine, sounds are not perfect and even if they were to you there will be ten more who disagree. Sure I am for realism, probably more than you know but I draw a line on what to expect for 39.95 when PMDG have delivered so much more in systems. This sort of reminds me of a guy who choose not to even use the NG simply because he believed the *nose* shape was not *perfect*, that's great for him but in my eyes a bit extreme...Best Wishes,[h4]Randy J. Smith[/h4]http://www.rawbw.com/~bdoolin/shinault/southparkcartmad.gif[h3]I WANT MY 747![/h3]Caution! Not a real pilot, but do play one on TV ;-)

Gideon,If you are a pilot in training and you value every dollar, as most of us do, then I think you would be better off worrying about the aspects of airplanes that are really important. In my opinion the only things about and engine that are important is reliability, being fuel efficient and that it meets the noise levels that have been established. What it sounds like is really a waste of your time.Why don't you spend some time looking into aerodynamics of aircraft and how various designs effect not only the flyability of an aircraft, its efficiency, its safety and even how much noise it makes as it passes thru the air. Lots of studies are ongoing right now in reducing air noise during the landing and takeoff phases. Look into the various aircraft systems and how they interact with other systems. Do you know how the air conditioning system works? How about the new materials that are being used to reduce weight and reduce the cost of construction. The list of things that you could look into are endless and I think would be a much better use of your time and energy. Curiosity is a wonderfull thing but it is important to keep it channelled in the right direction.Tom

On board?Um, have you been to the cockpit? The cockpit is completely different to the cabin. The engines don't sound as loud and the wind noise is noticable more than anything else.

Before September 11th any non-US flight and airlines that allowed it could allow at pilots discretion.Now, IT IS IMPOSSIBLE to go to the cockpit. If you try they'll thing you are a terrorist! Really!Phone the airline and ask them. They will say it is impossible now.In the US now there are 'no-fly' lists. Even some journalists have been refused flights because of their names or sometimes their 'relationship' to the Government.I am still a Bush supporter though!www.danielmcaloon.tkDaniel

Oh, brother. I just read through bits of this thread, and here's some definitive answers for you all:1.) Anyone who posts a clip of an A340-500 or 737 with CFM56-3 engines is making a null point. The CFM56-7 sounds absolutely nothing like the above engine.2.) I can say the original sounds did not come from a 737NG, but that's an issue that's been resolved anyway (in an excellent manner by PMDG staff).The differences between the CFM56 variants are actually very noticeable. No two CFM56 sub-families (-2, -3, -5, -7 et c) sound the same. The closest two are the CFM56-3 and CFM56-5, the difference being that the CFM56-3 lacks the buzzing fan noise that is so prominant in the CFM56-5, also, from outside at idle, the CFM56-5 has a distinct humming noise whilst the CFM56-3 merely hisses and rings. Note that the high RPM fan noise is at the same pitch as the CFM56-5, albeit much quieter, fading in at 80% N1 and fading back out above.The CFM56-7 does not whine at all. It whistles. This is the single bigest sound difference. Outside at idle (generally, all CFM56 engines sound the same at idle from the cabin), it sounds like the CFM56-3, but lacking any ringing noise of any sort. It's just hiss. The fan noise is similar to the BR715 and completely different from the other CFM56 engines in that it is more 'metallic' and higher pitched (note that the CFM56-3 and CFM56-7 share the same fan diameter, however the CFM56-7 fan has fewer blades and is made of different materials). Fan again fades in at 80% or so and fades out to almost nothing.Here's a zip containing real recordings from a 737-500, 737-800, and A320 for you guys to compare.Notice in the CFM56-3 and CFM56-7 clips, you can just BARELY hear the fan - and notice it is very high pitched with the CFM56-7.http://sgair.net/erick/CFM56_CLIPS.zip

Thank you Erick, that pretty much sums it up.DPhttp://www.precisionmanuals.com/images/forum/ng_driver.jpgMember of SJU Photography. [A HREF=http://www.jetphotos.net/showphotos.php?userid=9004]Click Here[/A] to view my aircraft photos at JetPhotos.Net!The official psychotic AA painter. :)

thanks eric cantu(your one of those guys that come up with soundsets arent ya) I trully appreciate your input. Not sure if your refering to my posts but - for me- when I use the word whine, I use it loosely to describe the high pitched noise that all turbofan engine make at some point during their operations. And also those buzz-saw noise too, cause I know and was pointed out to the different factors that affect the way how each engine sound. I brought up the a340 to make the point that these high pitched sounds are there and evident at some n1 and volume level of the ops of that cfm eng.quick question for you eric....just curiouswhere do you get your files from.gideon.