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Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Yea, Richie's SSTC (playing "Rapture" by Iio AFAIK) is a classic of the Tesla coiling world. I don't think it is possible to make a DRSSTC sound like that. They have about the same sound capabilities as the beeper on a PC.
I remember one old game that tried to play speech through the beeper, and you could just make it out, but I don't think full bandwidth music is practical.
edit: I just realised Richie's coil is playing a different mix of that song, that I couldn't find online. :-<
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
wrote ...
I don't think it is possible to make a DRSSTC sound like that. They have about the same sound capabilities as the beeper on a PC.
Actually, it should definitely be possible, although be extremely difficult to do so.
The reason you can't really do this now is because DRSSTCs are typically pulsed (to reduce power, heat, etc...) and the PRF which you hear, will prevent any type of other modulation of the signal to be heard.
I think if you could run the DRSSTC at CW, you could produce the classic SSTC audio modulation sound, although like i said before, it will definitely be a challenge.
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
One other thing I wondered is could PRF of a DRSSTC be pushed over audible range (20kHz) and then use second modulation on it, maybe PWM. Also pretty hard to do but still more plausible than CW DRSSTC. ANd I don't know how much would that benefit the quality.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
BP, that's just a photo of some coils
If I were trying to make a DRSSTC reproduce audio, that's exactly what I would do: push the breakrate above the audio range and PWM it. However, say the breakrate was 20kHz and the resonant frequency of the coil was 400kHz: you only have 20 cycles to play with, which gives a PWM resolution of about 4 bits. :-[
You can't get more without allowing the DRSSTC to hard-switch part cycles. Or making a very high frequency DRSSTC, which you guys might be able to turn your class-E sk1llz to. Class-E coils are technically DRSSTCs already, since the Class-E snubber cap forms a second resonant circuit with the primary.
All in all, I think classic SSTCs are best suited to high-quality audio, and DRSSTCs to making incredibly noisy crashes, bangs, and hardcore industrial synth and guitar noises. >.<
Banned on 3/17/2009. Registered Member #487
Joined: Sun Jul 09 2006, 01:22AM
Location:
Posts: 617
EastVoltResearc wrote ...
wrote ...
I don't think it is possible to make a DRSSTC sound like that. They have about the same sound capabilities as the beeper on a PC.
Actually, it should definitely be possible, although be extremely difficult to do so.
The reason you can't really do this now is because DRSSTCs are typically pulsed (to reduce power, heat, etc...) and the PRF which you hear, will prevent any type of other modulation of the signal to be heard.
I think if you could run the DRSSTC at CW, you could produce the classic SSTC audio modulation sound, although like i said before, it will definitely be a challenge.
Now all you need to do is play a better song. I got some old bass cd's from when I was into all that stuff that have some good treble in them that would sound great on those. I think I'm gonna try that when im done moving.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
You bet! Ideally I'd control it from an electric guitar, and put the exploding amp scene in Back To The Future to shame. How rock-and-roll would it be to boast that your last guitar solo blew a 300 amp IGBT.
I have some ideas about how to make the guitar interface, but it still needs a lot of work.
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OMG musical DRSSTC vids
I got some old bass cd's from when I was into all that stuff that have some good treble in them that would sound great on those. I think I'm gonna try that when im done moving. 
Ideally I'd control it from an electric guitar, and put the exploding amp scene in Back To The Future to shame. How rock-and-roll would it be to boast that your last guitar solo blew a 300 amp IGBT. 