[quote name='dieselweasel' date='4 May 2007, 09:53' post='28041']
I've seen piemanlargers video clips of his 158 with sound, and have also emailed SWD to see if they've sampled a rarer "Perkins" engined one.......I've also posted on the MREmag site about my misgivings.
The Perkins engine has a deeper, more rattly sound, and to me, this is the sound that the SWD one gives out. SWD have told me that they sampled a Cummins one, but to me it doesn't sound right. It may be due to the limitation of the sound on piemanlargers youtube video.
Perhaps this a cummins engine with a different note to those that you are used too? And yes, the u-tube clips are done on a cheap compact, not ideal sound and motion cature.
But, a DMU has a horizontal engine. Stand on one side and you'll hear a noisy engine, because of the valvegear and combustion sounds. Stand on the other, and its a smoother and much quieter, as you're listening to the bottom end of the engine. Have SWD thought about this, and do they "mix" the two sounds ?
If you hear the two different sounds while on different sides of the unit, I dont understand why you want them mixed as if you could hear both sides at once? I`d prefere the noisy side
Plus, there is the rise and fall in engine revs on starting off, as the engine revs before the transmission fills with oil, and then drops as the load is imposed on it.
Do SWD incorporate this in their sounds, and advise users on appropriate CV values to trigger it ?
Yes
I'm sorry to open a can of worms here and perhaps be a bit pedantic, but if it's worth doing then its worth doing correctly. Although boring prototypes, the sound side of diesel hydrualic traction is more interesting and more difficult to replicate.
Indeed, is this kind of attention to detail possible in DCC, or am I expecting too much ?
i think you are expecting too much. you have to consider that there is only 2 minutes of sound availble on the chip. If the 158 as it is does not make you happy dont buy it. However, for me its the best 158 sound chip around! Sound will develope over the coming years if not months. For me, I look at any model now hat does not have sound and I can not help but think how poor and unrealistic it is, they may as well be unpainted. Who ever heard a quiet train!
And to me, the horn is all wrong - far too low. If a basic like that is wrong, then suspicions arise about the rest of the package. I don't have a website but can post a 158 horn sound to anyone who wants to hear the real thing.
Again, you seem to be presuming that every member of a class will sound exactly the same. I have numerous 158 pass the bottom of my garden every day and I can assure you not all 158 sound the same. There will be future 158 projects, with different horns recorded from different units. Perhaps you should wait, though it may be next year, for one of these?
I've seen piemanlargers video clips of his 158 with sound, and have also emailed SWD to see if they've sampled a rarer "Perkins" engined one.......I've also posted on the MREmag site about my misgivings.
The Perkins engine has a deeper, more rattly sound, and to me, this is the sound that the SWD one gives out. SWD have told me that they sampled a Cummins one, but to me it doesn't sound right. It may be due to the limitation of the sound on piemanlargers youtube video.
Perhaps this a cummins engine with a different note to those that you are used too? And yes, the u-tube clips are done on a cheap compact, not ideal sound and motion cature.
But, a DMU has a horizontal engine. Stand on one side and you'll hear a noisy engine, because of the valvegear and combustion sounds. Stand on the other, and its a smoother and much quieter, as you're listening to the bottom end of the engine. Have SWD thought about this, and do they "mix" the two sounds ?
If you hear the two different sounds while on different sides of the unit, I dont understand why you want them mixed as if you could hear both sides at once? I`d prefere the noisy side
Plus, there is the rise and fall in engine revs on starting off, as the engine revs before the transmission fills with oil, and then drops as the load is imposed on it.
Do SWD incorporate this in their sounds, and advise users on appropriate CV values to trigger it ?
Yes
I'm sorry to open a can of worms here and perhaps be a bit pedantic, but if it's worth doing then its worth doing correctly. Although boring prototypes, the sound side of diesel hydrualic traction is more interesting and more difficult to replicate.
Indeed, is this kind of attention to detail possible in DCC, or am I expecting too much ?
i think you are expecting too much. you have to consider that there is only 2 minutes of sound availble on the chip. If the 158 as it is does not make you happy dont buy it. However, for me its the best 158 sound chip around! Sound will develope over the coming years if not months. For me, I look at any model now hat does not have sound and I can not help but think how poor and unrealistic it is, they may as well be unpainted. Who ever heard a quiet train!
And to me, the horn is all wrong - far too low. If a basic like that is wrong, then suspicions arise about the rest of the package. I don't have a website but can post a 158 horn sound to anyone who wants to hear the real thing.
Again, you seem to be presuming that every member of a class will sound exactly the same. I have numerous 158 pass the bottom of my garden every day and I can assure you not all 158 sound the same. There will be future 158 projects, with different horns recorded from different units. Perhaps you should wait, though it may be next year, for one of these?
