Date: 28 Feb 2005 20:25:29 GMT From: "Onejob" <xnospamm> Subject: Re: Saab 2004 9-3 Infotainment System
MarkH wrote: > > <dxyzcnospamam.com> wrote in message > news:pGtUd.23666$Sq5.14405nospamter.rdc-kc.rr.com... > > On 2/27/2005 3:03 PM, th wrote: > >> MarkH wrote: > > > > >>> I've got the Saab Infotainment System on my 2004 Saab 9-3 which > I'm very >>> impressed with except the "Speed Dependent Volume > Compensation" doesn't >>> work. > >>> I have returned it to the local Saab dealer who claims they test > drove >>> the car and couldn't find a problem. They reckon it works, > but neither >>> myself or anyone else who has been in my car could > hear any difference!! > > > > > >> What do you mean with difference? Is the sound volume constant or > do you >> not hear any volume increase? The latter is basically what > you should >> expect, when increasing the speed you should not > experience any >> relative increase vs. the setting at low speed, > i.e. the relation >> between the audio system sound and the car noise > should be the same. To >> really get the feeling you must of course > drive on the same type and >> quality of asfalt as the audio system > cannot compensate for road noise. >> Actually I feel that varying > road noise due to road quality is more of a >> nuisance than if it > varies due to the speed. An improvement here would be >> nice, maybe > by introducing the same kind of systems that are available >> for > propeller aircraft, an active noise reduction system. > > > > > > > Do you hear less sound? Or does the sound stay the same? Be aware > > you can set the sound dependent volume to 3 sensitivity settings... > > > To answer both questions: > The sound volume level stays the same i.e. it doesn't get quieter > when the car slows down and doesn't get louder as the car goes faster. > I have been through the settings and yes I know there are 3 > sensitivity settings, Low, Medium and High. I have tried all 3 but > still no difference. Do either of you have this system in your cars? > If so, does it work on yours? The system doesn't alter the volume, only increases the top and bottom ranges. Bass and Treble are often lost as the noise of the car increases. It is true that an active noise reduction system would work better than this. I have tried it out and there is not much of a difference. In fact, I found it better with it turned off as, as has been mentioned before, it's all down to road noise and not speed. Concrete and tarmac roads sounds completely different. One way to test is to stick some frequency tones onto a CD. Then play the CD at various speeds. That would prove the system. Or count it as another sales gimmick that doesn't really work :-) SP.
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