trkpny
Member
- Joined
- Sep 16, 2018
- Threads
- 0
- Messages
- 21
- Reaction score
- 2
- Location
- Salt Lake City, Utah
- First Name
- Steve
- Vehicle(s)
- 2017 mustang gt350 shelby
Thanks, Ramb. This is very helpful. It leads me to two questions:Ford uses sound design (engine enhancement) for both the ecoboost and the Gt350. These are suplementary frequencies that are intended to blend with the audible exhast tone to create the desired sound signature. The tunes are obviously different for each.
you can disable this with a forescan change.
The base audio carries audio plus sound design through its amplified output to the speakers so forescan is the only option to eliminate the sound design.
the premium audios carry the sound design separe from the audio, so those sound design leads can be ignored whe nusing a replacement amp and taking the signal from the head unit. They are blended after the factory amp if a loc is used on the factory amp output.
the micorphone (in the case of the ecoboost) is used in a separate scenario for active noise cancellation. this is on top of sound design. this is needed as the 4 cyinder has frequencies that resonate the cabin at low rpm. when a sub is added, it amplifies both the sound design and anc signals, they are no longer calibrated properly (ecoboost).
anc signal is then larger than the noise it is trying to cancel and you then hear the result. ANC can also be eliminated in the ecoboost with forescan.
when either is amplified due to an aftermarket amp or sub, you are hearing those suplemental frequencies amplified above the noise floor (exhaust tone from engine) and it sounds fake because they are no longer blending as designed into the total signature.
There should not be a mic in the Gt350 for ANC as this does not have anc (to my knowledge). sound design should be feed forward and not require a mic for any feedback in the GT350.
Ramb
1. Can anyone use Forscan? As long as they have the correct tool? Or does it need to be a Ford dealer?
2. Does the base system have an amplifier? Or does it just use the head unit?
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