Vantage/Elite/Compact noise side by side (FYI)

NotthatBob · Post by **NotthatBob** » Wed Mar 26, 2008 8:36 pm

I wanted to go from my Resmed Compact to the Vantage for the data capabilities. Unfortunately, the Vantage made noise that the spouse couldn't live with...not so the Compact. It seems to "whistle" or "whirr" when following inspiration/expiration. It's the unit, not the mask. I went to the sleep clinic and did a side by side with the units mentioned in the subject line. Only the Compact does *not* make this noise. Evidently, there is something about the "auto" tracking mechanism that makes the airflow more audible. This was true even with the auto units set to CPAP mode, and even though the expiration relief function was off. Just FYI.

Slinky · Post by **Slinky** » Wed Mar 26, 2008 8:59 pm

I guess I'm not particularly "noise sensitive". I've found no noise problem w/the Elite, Vantage or the new VPAP Auto.

alnhwrd · Post by **alnhwrd** » Thu Mar 27, 2008 1:07 am

Me neither. My Elite sits on a night stand about 8 inches from my head, and I don't notice a thing.

Snoredog · Post by **Snoredog** » Thu Mar 27, 2008 1:21 am

[quote="Slinky"]I guess I'm not particularly "noise sensitive". I've found no noise problem w/the Elite, Vantage or the new VPAP Auto.

Slinky · Post by **Slinky** » Thu Mar 27, 2008 7:02 am

Hey, SnoreDog!

Really, I quite firmly believe that noise level is determined more by the individual machine than by a particular brand or model. I've read of others who have had one model of one brand be noisey but a second of the same brand and model NOT be more than once. My first Elite was "noisier" than my second but the first one had an internal problem causing its replacement. My second Elite, my Vantage and now my VPAP Auto have all been quiet. I did have a pre-M series Respironics auto as a loaner for 3 weeks plus I owned one for a short while before selling it to my son-in-law and I can't say that I noticed any difference in noise level between either of them or with any of the Resmeds I've had.

But then I've always been good about hearing what I want to hear and NOT hearing what I didn't want to hear. Except a water faucet drip.

BarryKaraoke · Post by **BarryKaraoke** » Thu Mar 27, 2008 11:09 am

I made the switch from the "Compact" to the "Elite" and my wife swears the Elite is actually quieter! She had to start turning on a fan again for added "white noise".

ResMed only states that all three are less than 30db at 1 Meter, when run at a standard test pressure of 10. Of course this is a scientific measurement in ideal conditions. Actual use will most likely be higher.

ResMed wrote:Noise Level: Radiated sound pressure is measured at <30dBA at 10 cm H2O and 3’3.36” (1 m) according to ISO17510-1.

Also keep in mind that the actual noise is going to vary with pressure. A machine at 5 is going to be quieter than a machine at 17.

To understand what 30db is, check out this interesting chart I found.

-80 - Underwater Nuclear Submarine Microphones listening to shrimp chewing on food at 100 Meters
-30 - One human talking 20 miles away
-4 TO +4 - The ticking of an ordinary wristwatch at 1 meter
0 - Beginning of human hearing; a mosquito 10 feet away
10 - Absolute Silence, ATT-Bell Labs "Quiet Room"
13 - Ordinary Light Bulb Hum
15 - A pin drop from a height of 1 centimeter at a distance of 1 meter
30 - Totally quiet nighttime in the desert
40 - A whisper
60 - Normal Conversation
85 - Begining of hearing damage
100 - Normal car or house stereo at max volume
107 - The beginning of pain at the most sensitive frequency of 2750hz
114 - A very large portable radio
120-130 Front Row at a rock concert - upto 200 refridgerator sized speakers
125 - Drum set at the moment of striking
126-130 - Typical pro DJ system
127 - Human Tinitus (ringing in the ears) begins
128 - Human, loudest scream measured at a distance of 8 feet, 2 inches
130 - Marching Band - 100-200 members
133 - Gunshot at Ear Level
135 - “VERY LOUD” Car Stereo
135 - Large Train Horn
137 - Human Ear - All frequencies are painful
140 - Extreme hearing damage, no mater the exposure time
141 - Human Body begins to feel nausea
143 - Human Body feels as if someone just football tackled your chest
145 - Human Vision begins to vibrate
136-145 - "Competition" car stereo, sixteen 12", eight 15", OR four 18" speakers
147 - Formula 1 Race Car @ 700 Horse Power
150 - "The Who" Rock Concert - Two 10 story stacks = 144 double refridgerator sized speakers
150 - Human Sensation of being crushed underwater
154 - Toy Balloon popping...depends on type, size & how hard to inflate.
165 - Jet Airpline, Boeing 727 at takeoff
180 - 1 Pound of T.N.T at 15 feet
212 - Sonic Boom average (Jet)
286 - Mt. Saint Helens volcano eruption (I actually heard this one!)

How many WHO concerts did YOU go to?

_________________

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Slinky · Post by **Slinky** » Thu Mar 27, 2008 11:18 am

Ha! I stopped going to concerts w/the advent of the Beatles 'cause they were TOOOOOO LOUD!

I never went to see Bill Haley & The Comets 'cause they were TOOO LOUD.

As a matter of fact, 'twas the Beatles that drove me to country & western music. Until it became country Rock instead which is TOOOO LOUD.

Ahhh, Elvis, Don Gibson, Bobby Helms, Roy Orbison .... I miss you. And others. Even Josh Turner is moving away from ..... ah well.

billbolton · Post by **billbolton** » Thu Mar 27, 2008 4:06 pm

BarryKaraoke wrote:To understand what 30db is, check out this interesting chart I found.
-80 - Underwater Nuclear Submarine Microphones listening to shrimp chewing on food at 100 Meters
-30 - One human talking 20 miles away
-4 TO +4 - The ticking of an ordinary wristwatch at 1 meter
0 - Beginning of human hearing; a mosquito 10 feet away

The threshold of perceived "hearing" in industrialised communities is commonly taken to be a SPL of about 20 dB. Some individuals may start preceiving "hearing" somewhere between 0 dB and 19.9 d, but most wont.

Cheers,

Bill

NotthatBob · Post by **NotthatBob** » Thu Mar 27, 2008 4:39 pm

I think, for The Mrs., it was the *quality* of the noise more than the *quantity.* The Compact seems to be relatively constant, whereas the Vantage seemed to "breathe with me", so to speak. Although all units were quiet, the *vascillation* of the noise was noticable on inspiration/exhalation. She is not a "good sleeper", The Princess and the Pea comes to mind.

NotthatBob · Post by **NotthatBob** » Thu Apr 03, 2008 8:54 pm

I thought I'd update since we have a thread on page 1 re: noise levels. To recap, started with Compact, wanted data capability so tried Vantage. The wife couldn't take the noise of the Vantage...not so much quantity of noise, but the different quality of the noise...following my breathing with different "pitch" with inspiration/expiration. Went back to Compact, but this unit (different serial number from first unit), made a "whistling" noise...the motor/fan, not the mask. It was not terribly loud, but noticeable, and very high pitched...would probably make a dog crazy. Took it back to try another Compact unit. The tech *did* hear the "whistle" and gave me new unit. It's perfect! Bottom line, there are unit to unit differences, even of the same make and model.

Titrator · Post by **Titrator** » Thu Apr 03, 2008 9:27 pm

I saw the who play a very long time ago. Yes... they played loud.. but man, it was sooo good. Probably the most fun I have had at a concert. Pete Townsend rules the guitar.

Slinky · Post by **Slinky** » Fri Apr 04, 2008 4:58 am

Nah, Titrator, Pete Townsend is no Chet Atkins on guitar!!! Nor the musical genius that Chat was either!!

DreamStalker · Post by **DreamStalker** » Fri Apr 04, 2008 7:31 am

I went to 99% of all the rock concerts that toured north America between 1977 and 1984 and Ted Nugent was the loudest I ever went to. My ears were ringing for about two weeks afterwards and now I have tinitus and they ring all the time.

Oh, and Chet Atkins is a good guitarist but not the greatest and certainly not a musical genius. Townsend is an OK guitarist but if I can play those Who songs he certainly is not that great. Stevie Ray Vaughn was pretty darn good though, as are many others.

Slinky · Post by **Slinky** » Fri Apr 04, 2008 8:21 am

Are you kidding, DreamStalker??? Chet Atkins wasn't a musical genius?? He was a design consultant for Gretsch, who manufactured a popular Chet Atkins line of electric guitars from 1955-1980 and also for Gibson. He was manager of RCA's Nashville studio and vice president of RCA's country division. He was responsible for the creation of the first studio built specifically for the purpose of recording on the now famous 'Music Row'.

His trademark "Atkins Style" of playing, which was and is very difficult for a guitarist to master, uses the thumb and first two fingers of the right hand. He expanded his right hand style to include picking with his first three fingers, with the thumb on bass. The result was a clarity and complexity that became his unmistakable sound.

He received 14 Grammy awards and was awarded their Lifetime Achievement Award; 9 Country Music Associaton Instrumentalist of the Year awards and Billboard magazine's Century Award. He was inducted into the Rock N Roll Hall of Fame posthumously. He was skilled in not just Country, but also Jazz, Classical and Blues.

And one can't overlook the many stars he brought to the RCA recording fold: Waylon Jennings, Willie Nelson, Connie Smith, Bobby Bare, Dolly Parton, Jerry Reed, John Hartford and at the heart of the civil rights movement violence in the south he signed country music's first black singer, Charley Pride.

Goshes, he was instrumental in developing the "Nashville Sound". He ..... ah well. You get the drift.

BarryKaraoke · Post by **BarryKaraoke** » Fri Apr 04, 2008 9:34 am

Slinky wrote:Are you kidding, DreamStalker??? Chet Atkins wasn't a musical genius?? He was a design consultant for Gretsch, who manufactured a popular Chet Atkins line of electric guitars from 1955-1980 and also for Gibson.

Although I am a Classic Rocker at heart, I have to agree about Chet Atkins. Several years ago I had the opportunity to see him play live for a small group in a hotel suite at a radio seminar alongside several very well known country music guitarists ("pickers" in the industry). They all fawned over him and stood in line to have the opportunity to play alongside him, treating him like a country guitar god. In my opinion...his talent, much like Clapton or BB. King is all effortless finesse.

Watch THIS YOUTUBE VIDEO. If you can get past the musical choice and costumes of the day (and that goofy harmonica/conga player...geez!), the things he does with his fingers are quite amazing. At about 1:57 in the video he is essentially doing modified "hammer-ons" ala Eddie Van Halen...20 years earlier.

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