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Engine sounds should fade/LPF with TAS/Alt

Scheduled Pinned Locked Moved 146 Professional
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  • F Offline
    F Offline
    FailCold
    wrote on last edited by
    #1

    Hi there,

    Congrats on the latest update - it’s truly a wonderful simulation and one of my most enjoyed products.

    However, there’s one thing that still bugs me about the sounds (which on the whole are excellent), and it’s been like this since initial release.

    The engine sounds should have a low pass filter applied as TAS and altitude increases. This phenomenon is due to the lower air density causing sound to not be transmitted, and means that high frequencies (eg the buzz saw and whine) are not audible at cruise levels/high TAS.

    In theory, you should just hear wind rushing over the nose and fuselage and a bassy rumble of low frequencies from the engines, transmitted through the fuselage.

    Appreciate your thoughts :-)

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  • N Offline
    N Offline
    neinnunb
    wrote on last edited by
    #2

    Hello. Now that you mention it you are right I knew there was something off about the engines so loud in cruise. Otherwise top notch sounds with no other complaints! :)

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    0
  • MarkM Offline
    MarkM Offline
    Mark JF Staff
    wrote on last edited by
    #3

    Thank you for reporting this. I believe we did include some improvements to this area in a previous update to the 146, but we can take another look into this. I've logged this feedback on our internal bugs/feature request tracker for our sound developer to take a look into.

    Mark - Just Flight

    Just Flight Development Assistant

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  • F Offline
    F Offline
    FailCold
    wrote on last edited by
    #4

    Thanks @Mark ! Definitely intended as constructive feedback, as it’s one of the better sound sets out there for MSFS overall. For reference, typically the cutoff frequency for the LPF would start around the acceleration point at 10k ft, and slowly decrease (to around 100hz @12db/oct, as an estimate) up to around 20000ft as the TAS increases.

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  • F Offline
    F Offline
    FailCold
    wrote on last edited by FailCold
    #5

    Hey @Mark and co, I was just wondering if there had been any update on this? All the best, FC.

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  • MarkM Offline
    MarkM Offline
    Mark JF Staff
    wrote on last edited by
    #6

    We have logged the feedback with our sound developer and it'll be looked into the next time the sounds are updated in the 146. This will likely be around the time the RJ Professional releases.

    Mark - Just Flight

    Just Flight Development Assistant

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  • F Offline
    F Offline
    FailCold
    wrote on last edited by
    #7

    Hey @Mark and team - hope this finds you well. I've just been watching a stream of the RJ, and wow - looks incredible. Can't wait. One thing I did notice (and i appreciate it's a pre-release version...) was that the above issue is still present - whilst at cruise, the engine buzzsaw and whine could clearly be heard in the cockpit, which is incorrect. Whilst cruising, the sound should just be a bassy rumble. Was wondering if you'd mind passing along this feedback.

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  • F Offline
    F Offline
    FailCold
    wrote on last edited by
    #8

    (to be clear, I'm referring to the sounds in the RJ, but this also applies to the 146...)

    DerekD 1 Reply Last reply
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  • DerekD Online
    DerekD Online
    Derek JF Staff
    replied to FailCold on last edited by
    #9

    @FailCold

    Direct from the sound developer:

    "The audio levels for the RJ (and 146) have been designed to provide an immersive experience while at the same time not overburdening the listener and allow headroom for other components (warnings, cabin announcements, electrical and hydraulic systems, etc.) to be sufficiently audible.

    Compared to "regular" sized turbofan engines, the (A)LF500 series engines are very small and that comes with specific traits. Most importantly though, it does not pack the punch of a CFM as found on the 737 or A320 for example and thus lacks dynamic range by nature in comparison.

    Last but certainly not least; be aware that the listening experience might vary greatly depending on which speakers and/or headphones are being used to listen to the audio. Note that YouTube also applies volume compression these days depending on your "stable volume" setting. In other words, the audio in the video will yield a different experience than listening to it in the sim."

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  • F Offline
    F Offline
    FailCold
    wrote on last edited by
    #10

    Thanks @Derek, absolutely agree with the shortcomings of YouTube's audio compression. I'm an audio engineer (music, not planes :)) by trade, so critical listening is part and parcel of what I do.

    However, I would add, that I am not debating the subjective quality of the sounds, I am querying the objective accuracy - as I cannot hear the distinctive LPF being applied with TAS as per my original post. It is the same in the current build of the 146, and in my opinion (as someone who is passionate about audio) is the one thing that I'm not a fan of in the product.

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