A friend of mine is working with a Digitrax sound file but needs to increase the volume of one of the sounds to match the other sound levels. He wants to know if there is an app or other program that can pick out the original sound, rerecord it at a higher volume, then plug it back into the sound file, OR is there a better way to go about this?
Hornblower
I've used this program for other purposes, years ago (meaning I'm not up to speed on it currently)
https://www.audacityteam.org/
Henry
COB Potomac & Northern
Shenandoah Valley
If he's working on a sound file for a Digitrax sound decoder, he should ask here:
https://groups.io/g/AnPRR
John McMasters is THE go-to guy for spj files...
Audacity is the go-to sound editor, but I don;t think there is currently anything that can pick the individual WAV files out of the SPJ. You need the original project files, then edit the sound you need edited, and then rebuild the SPJ.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
if I'm not totally in left field, the decoders have CV's controlling individual sound volumes. If that helps, I don't know exactly what he needs to do with it...
I know that's not what u asked, but FWIW... :D
Cid (Memphis, Tennessee)
So, I guess that is true for SoundTraxx Econami/Tsunami2 decoders. Others I can't say.
I can't think of one that doesn't. Some have more individual volume controls because they have more sound 'slots' but they pretty much all have a master, prime mover, horn, bell, and aux sounds individual volume controls.
This is my Digitrax SHD-166 set up in Decoder Pro for my Mantua
2-6-6-2 logger.Click to enlarge
Plenty of sound level options.Mel My Model Railroad http://melvineperry.blogspot.com/ Bakersfield, California I'm beginning to realize that aging is not for wimps.
Can somebody tell me why a 'volume' level should be tweaked while recording a digital audio file? The volume information concerns the DAC and audio playback, and while some audio formats may include metadata it would probably be something akin to a CV that sets a preamp to get 'desired' sound output. Think of this as sliders for the different channels on a mixer.
If you were a glutton for punishment you could recode a digital file for dynamic range. I don't remember if Audacity does this. But you would need reasonably uncompressed audio to do this right, especially if the file is supposed to become part of a proprietarily-compressed or compiled 'sound set' format, as noted. Too much tinkering with this may be likely to make the resolved sound weird.
Many of the Digitrax sound projects on SoundDepot have a low gain, no volume. You can play with the sliders until you are sea blue :-) in the face, things will not change.
What we do is get the SPJHelper (software) to extract all the data from the SPJ and then run the wav file we retrieve thru what ever wav editor you can get your hands on and add more gain without going over board. Learning curve involved.
I have added gain to a BELL sound I preferred and dropped it into my Pierce-Arrow Goose that runs a Digitrax SDN144PS. But you can't over do it or the decoder bogs down from the power drain. We all ready see this as the lights dim with some sounds.
Audacity does this as well as Wavepad.
Marc
Might be some interesting tech information or approaches here:
http://www.silogic.com/trains/ADPCM.html