BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Technical Topics > Engine / Drivetrain / Exhaust / Bolt-ons

Closed Thread
 
Thread Tools Search this Thread
      09-25-2013, 12:40 PM   #1
Jason
Administrator
United_States
6521

 
Jason's Avatar
 
Drives: E90 M3
Join Date: Mar 2005
Location: USA


Posts: 16,626
iTrader: (0)

Post BMW M3 M4 Active Sound: the Good and the Bad News

BIMMERPOST NEWS
BMW M3/M4 Active Sound... We Have Good and Bad News
173
COMMENTS

We have both good and bad news on Active Sound technology in the M3/M4. For those unfamiliar, Active Sound technology was first introduced in the M5/M6 and has extended to other models such as the M135i. The system reproduces the engine's sound through the car's audio system at varying sound levels based on throttle input, speed, and engine revs, as well driving the mode (louder in Sport and Sport+ settings). See BMW's original press release on this.

BMW Press Release

Active Sound Design delivers precise feedback.

M5 drivers will be given an even more direct reminder of their car’s performance capability by technology that brings the distinctive sound of the high-performance V8 – in all its glory – into the cabin of the new BMW M5. The Active Sound Design technology specially developed for the new BMW M5 takes its cues from the driving situation at any one time to deliver an accurate reproduction of the engine’s sound through the car’s audio system. The system’s digital signal processing exchanges data directly with the engine management, allowing it to reflect the engine’s revs and torque, and the car’s speed over the road. The result over a smoothly driven journey is a discreet soundtrack in keeping with the harmonious and assured characteristics of the V8 powerplant. A stamp on the accelerator, meanwhile, prompts an immediate audible response to match the instantaneous – and typically M – burst of power from beneath the bonnet.

In generating its signals, Active Sound Design takes its cues from the firing sequence of the eight-cylinder engine and the frequency range of the exhaust system. This gives the driver an extremely accurate impression of current engine load and an even more intense sensation of the V8’s high-performance characteristics. At the same time the Active Sound Design control unit ensures an even spread of sound across all five seats of the new BMW M5, while observing the legal guidelines governing noise emissions inside and outside the car. The characteristics of the sound produced by the technology also adjust to the engine settings selected by the driver. For example, switching to “Sport” or “Sport+” mode sharpens not only the engine’s responsiveness but also the acoustic experience inside the car.


So, the bad news is yes, the M3/M4 does feature Active Sound.

But, the good news is that we've confirmed with BMW Germany that it's a live amplification of the S55 engine's natural sounds. There is no artificially generated sound or pre-recorded track being played. This sound amplification takes place through the M3/M4/s stereo speakers.

Those with thoughts of disabling the amplification may be disappointed to learn that since the sound is played through the audio system, past attempts by M5 and M135i owners to disable Active Sound required pulling the stereo system fuse or unplugging a Sound Symposer unit. While the Active Sound feature was disabled with both methods, so were the entire audio systems. See the video below by BIMMERPOST members for a sample of how the M5 and M135i sound with Active Sound disabled.

Separately, we tried to get clarification on whether the manual transmission's rev matching feature could be disabled. BMW remains mum on the topic, for now.


How the M3/M4 sounds inside the cabin.






Audio system fuse pull on F10 M5.




Sound Symposer unit unplugged on M135i.



Compared to the normal sound.


Appreciate 0
      09-27-2013, 11:23 AM   #2
sward
Private First Class
Sweden
1

 
sward's Avatar
 
Drives: X5 M50D F15 and 116d F20
Join Date: May 2005
Location: Stockholm, Sweden


Posts: 164
iTrader: (0)

No real surprise
__________________
/Fredrik Swärd
BMW X5 M50d -14 (F15),BMW 116d -13 (F20)
Sold: X5 3.0D -10 (E70), M3 -10 (E93), 320DX -10 (E91), 320D M -08 (E91), X3 3.0D -07 (E83), 335 -07 (E92), 325 -05 (E90), 320 M -02 (E46), 318 M -00 (E46), 320 CiA -93 (E36), 318 -89 (E30)
Appreciate 0
      09-27-2013, 11:24 AM   #3
Sean@PSI
47

 
Drives: 2015 Sakhir Orange M4
Join Date: May 2012
Location: Winter Park, FL


Posts: 1,553
iTrader: (0)

So we will hear the mighty new S55 through the B & O setup...sounds sick to me.
__________________

Sean | Precision Sport Industries (PSI) | Sean@precision-sport.com | www.precision-sport.com | FACEBOOK | 407.617.0372
Appreciate 0
      09-27-2013, 11:27 AM   #4
Park2670
General
United_States
204

 
Park2670's Avatar
 
Drives: 2014 CX-5
Join Date: Jan 2006
Location: UTAH


Posts: 18,124
iTrader: (8)

Quote:
Originally Posted by Sean@PSI View Post
So we will hear the mighty new S55 through the B & O setup...sounds sick to me.
+1. The more engine I hear, that others around me dont hear, the better.
__________________
Appreciate 0
      09-27-2013, 11:33 AM   #5
zuggerat89
Still waiting...
United_States
10

 
zuggerat89's Avatar
 
Drives: OGV
Join Date: Jan 2006
Location: Monmouth County, NJ


Posts: 888
iTrader: (0)

I had a feeling this was coming, the engine noises in those videos sounded odd to me.
Appreciate 0
      09-27-2013, 11:33 AM   #6
pbar
Private
United Kingdom
1

 
pbar's Avatar
 
Drives: 2015 M4 AY
Join Date: Oct 2012
Location: San Francisco


Posts: 60
iTrader: (0)

That's pretty sad :-(

On my last four M3s I deliberately chose the low-end sound option because I prefer to listen to the engine when driving.

On a new M4 it seems I have to spend extra money on a high end sound system if I want to hear the engine at all.

I think I'm getting old.
Appreciate 0
      09-27-2013, 11:35 AM   #7
dex37
Second Lieutenant
2

 
dex37's Avatar
 
Drives: E92 M3
Join Date: Nov 2011
Location: Germany


Posts: 204
iTrader: (0)

Major fail. I am totally surprised that a real petrol head would welcome this kind of feature.

I like engine and exhaust sound, but coming from the engine or the exhaust. That is a great disappointment to me!
Appreciate 0
      09-27-2013, 11:39 AM   #8
glennQNYC
Captain
United_States
17

 
glennQNYC's Avatar
 
Drives: M Sport 335i
Join Date: May 2013
Location: North Jersey


Posts: 780
iTrader: (0)

Garage List
2014 335i  [4.83]
Seems like all BMW would have to do is provide a preference to toggle the feature on/off and everyone would be happy.
__________________
Appreciate 0
      09-27-2013, 11:39 AM   #9
bavarian19
General
United_States
230

 
bavarian19's Avatar
 
Drives: Car
Join Date: Mar 2005
Location: VA


Posts: 18,814
iTrader: (23)

For the amount that BMW spends on marketing and creating 'edition' models that are just a special paint, is it that hard to create a well engineered exhaust note?

For example, why is it that the akra exhaust on the new M5 sounds great on its own without audio amplification? Its not the turbo/non-turbo debate with exhaust note. There can be a well designed exhaust note, but BMW cheats their way in delivering that.

It just leaves a bad taste in your mouth with how 'well' engineered everything is on the M models to them taking the easy way out.
Appreciate 0
      09-27-2013, 11:40 AM   #10
signes
Brigadier General
United_States
63

 
signes's Avatar
 
Drives: E90 M3
Join Date: Sep 2008
Location: Spinnin at 8k


Posts: 4,213
iTrader: (3)

Real question for me is why? Totally unnecessary and disappointing. Does the volume vary with speed or the volumes on stereo?
__________________
08 E90 | Jet Black / Black | 6MT
Mods: RAC RG63 w/ Pirelli Corsa 255F/285R | Akrapovic Evo Exhaust | OEM Blacklines
Winter Setup: OEM 18s w/ Nokian Hakkapeliita R 245/40-18
Appreciate 0
      09-27-2013, 11:41 AM   #11
SoCalS2k
Private First Class
24

 
SoCalS2k's Avatar
 
Drives: S2K!
Join Date: Sep 2006
Location: LA


Posts: 174
iTrader: (0)

Garage List
2001 Honda S2k  [0.00]
Quote:
Originally Posted by bavarian19
For the amount that BMW spends on marketing and creating 'edition' models that are just a special paint, is it that hard to create a well engineered exhaust note?

For example, why is it that the akra exhaust on the new M5 sounds great on its own without audio amplification? Its not the turbo/non-turbo debate with exhaust note. There can be a well designed exhaust note, but BMW cheats their way in delivering that.

It just leaves a bad taste in your mouth with how 'well' engineered everything is on the M models to them taking the easy way out.
This has nothing to do with exhaust note, just engine noise.

I don't mind this technology since it's the real live engine noises, just amplified.

Ask the M5/M6 owners. They don't mind and love how their cars sound.
Appreciate 0
      09-27-2013, 11:43 AM   #12
NISFAN
Brigadier General
England
63

 
NISFAN's Avatar
 
Drives: The best kind of F30 :)
Join Date: Aug 2012
Location: Bedford UK


Posts: 4,160
iTrader: (0)

Are they saying there are microphones somewhere on the car actively picking up an input for the stereo?

Is it just me that finds that hard to believe?
__________________
Appreciate 0
      09-27-2013, 11:44 AM   #13
ottoblotto
///M-Flight Bavaria
Germany
18

 
ottoblotto's Avatar
 
Drives: E90M3
Join Date: Apr 2011
Location: Im around


Posts: 1,205
iTrader: (3)

Garage List
2010 BMW X5  [0.00]
2011.75 BMW M3 E90  [5.00]
Quote:
Originally Posted by glennQNYC View Post
Seems like all BMW would have to do is provide a preference to toggle the feature on/off and everyone would be happy.
THIS! Just do it BMW... Sheesh...
__________________
"With great power comes great responsibility." -El-Superbeasto
Appreciate 0
      09-27-2013, 11:45 AM   #14
mikefromMA
First Lieutenant
United_States
4

 
Drives: 2013 e92 M3
Join Date: Aug 2011
Location: MA


Posts: 305
iTrader: (6)

Garage List
2013 M3  [4.50]
2013 BMW x3  [0.00]
that top video is amazing
Appreciate 0
      09-27-2013, 11:45 AM   #15
Smokey
Lucky Lefty
10

 
Smokey's Avatar
 
Drives: on twisty roads
Join Date: Aug 2007
Location: *


Posts: 718
iTrader: (0)

Garage List
2011 M3  [5.00]
2013 bmw F25 msport  [5.00]
2011 335iS  [4.80]
Guy 1: Wow, your M4 sounds amazing!

Guy 2: Yeah, the car is a beast. [Car goes into a tunnel and there's interference with the engine sound coming through the speakers] I know it won't happen, but that would be sooo funny
__________________

The Power of M
Appreciate 0
      09-27-2013, 11:46 AM   #16
Vanmarsenille
In On The Kill Taker
United_States
3

 
Vanmarsenille's Avatar
 
Drives: 2013 E93 M3; 2010 E92 335i
Join Date: Aug 2012
Location: TX


Posts: 210
iTrader: (0)

Oh dear.
Appreciate 0
      09-27-2013, 11:47 AM   #17
F1Venom
Captain
15

 
Drives: ZCP E90 M3
Join Date: Apr 2013
Location: USA


Posts: 862
iTrader: (0)

Haha, whatever. Isn't there an iPhone app out there which synchs to your cars internals and can make it sound like you're driving a Ferrari or some muscle car? It only costs $5!
Appreciate 0
      09-27-2013, 11:47 AM   #18
nullrouted
Studying...
United_States
8

 
nullrouted's Avatar
 
Drives: AW '13 E92 ZCP 6MT M3
Join Date: Apr 2013
Location: North Central Florida


Posts: 861
iTrader: (0)

This. Is. Horrible.

I don't care whether you love the idea or you hate it -- the fact is if you care about your audio, even a little bit, this is a death blow for the M4's audio capabilities. Why on earth do I want my perfect Spotify/MP3/etc track to be muddled with mic'd-in engine noise that you can't disable?? I guess we can only hope that one of the tuners finds a way to code it out.
Appreciate 0
      09-27-2013, 11:50 AM   #19
Mako
2000 M Roadster (sold), 2006 M Coupe (sold)
United_States
40

 
Drives: '12 X3 35i M Spt '13 335 M Spt
Join Date: Jul 2009
Location: Chicago


Posts: 1,336
iTrader: (0)

At first I was against this and thought it was kind of a cheesy feature. BUT the more I think about it, especially with it sending the actual engine sounds into the cabin, the more I actually like the idea.

I remember with my C63, I loved the sound of the engine, so much so that I would turn down the music and open the windows just to hear that beauty roar. It was kind of a pain in the ass at the same time, because I really do enjoy my music and conditions aren't always perfect for windows down in Chicago.

Its not like this technology is sending audio outside your car to make the engine sound better to others, its simply letting the driver hear their own engine, because normally the engine sound is heavily muted inside the cabin. Now the people inside can hear what the people outside hear...

I do wonder why BMW can't simply add a feature to disable this for the people who are so against it, seems like an easy feature to add in the audio section of idrive.
Appreciate 0
      09-27-2013, 11:52 AM   #20
gvega702
Private
0

 
Drives: 2004 BMW 325i Premium | Sport
Join Date: Mar 2013
Location: Las Vegas


Posts: 63
iTrader: (0)

Another nail in the coffin for BMW.

Do something right, with purpose and passion BMW Jesus. Remember where you came from and why you got here. I understand that companies must evolve and change but they must do it within there own brand values. It seems as though BMW's only value now is to make a buck.
Appreciate 0
      09-27-2013, 11:53 AM   #21
SoCalS2k
Private First Class
24

 
SoCalS2k's Avatar
 
Drives: S2K!
Join Date: Sep 2006
Location: LA


Posts: 174
iTrader: (0)

Garage List
2001 Honda S2k  [0.00]
Quote:
Originally Posted by Mako
At first I was against this and thought it was kind of a cheesy feature. BUT the more I think about it, especially with it sending the actual engine sounds into the cabin, the more I actually like the idea.

I remember with my C63, I loved the sound of the engine, so much so that I would turn down the music and open the windows just to hear that beauty roar. It was kind of a pain in the ass at the same time, because I really do enjoy my music and conditions aren't always perfect for windows down in Chicago.

Its not like this technology is sending audio outside your car to make the engine sound better to others, its simply letting the driver hear their own engine, because normally the engine sound is heavily muted inside the cabin. Now the people inside can hear what the people outside hear...

I do wonder why BMW can't simply add a feature to disable this for the people who are so against it, seems like an easy feature to add in the audio section of idrive.
Well said!
Appreciate 0
      09-27-2013, 11:54 AM   #22
gymtime
Private First Class
8

 
Drives: BMW M3
Join Date: Aug 2013
Location: Florida


Posts: 125
iTrader: (0)

Quote:
Originally Posted by NISFAN View Post
Are they saying there are microphones somewhere on the car actively picking up an input for the stereo?

Is it just me that finds that hard to believe?
I'm also wondering exactly how this works...
Appreciate 0
Closed Thread

Bookmarks

Tags
2014 bmw m3, 2014 bmw m3 horsepower, 2014 bmw m3 specs, 2014 bmw m4 horsepower, 2014 bmw m4 specs, 2014 m3, 2014 m3 engine, 2014 m3 forum, 2014 m3 horsepower, 2014 m3 hp, 2014 m3 specs, 2014 m3 weight, 2014 m4 engine, 2014 m4 horsepower, 2014 m4 hp, 2014 m4 specs, 2014 m4 weight, 2015 bmw m3, 2015 bmw m4, 2015 m3, 2015 m3 engine, 2015 m3 specs, 2015 m4, 2015 m4 engine, 2015 m4 hp, 2015 m4 weight, active sound bmw m3, active sound bmw m4, active sound m3, active sound m4, bmw f80, bmw f80 forum, bmw f80 forums, bmw f80 m3, bmw f80 m3 s55, bmw f80 m3 sedan, bmw f82, bmw f82 forum, bmw f82 forums, bmw f82 m3 coupe, bmw f82 m4, bmw f82 m4 coupe, bmw f82 m4 s55, bmw f82 m4 video, bmw f83, bmw f83 m3, bmw f83 m4, bmw m forum, bmw m forums, bmw m3 active sound, bmw m3 carbon fiber roof, bmw m3 forum, bmw m3 forums, bmw m3 s55, bmw m3 s55 engine, bmw m4, bmw m4 active sound, bmw m4 coupe, bmw m4 coupe forum, bmw m4 curb weight, bmw m4 forum, bmw m4 forums, f80 m3 active sound, f82 m4 active sound, m4 active sound

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 08:05 PM.




f80post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST