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| quote: | Originally posted by DJ Robby Rox
The arguement I never get is when people say "its not about analog or digital being better or worse because they do different things". Its one of the vaguest most general statements a person can make about something. |
Uh, hate to butt in here, but the differentiation between an analog instrument and a VST emulating analog wouldn't be discernible by the human ear if done properly. (just sayin')
I only know general theory so you can fuck off with the details, but I do know that an analog keyboard is designed with a basic onboard chipset with one or many Voltage controlled oscillators. The VCO's take a DC current and vary the voltage to create sinewaves. The only difference between a computer emulating a VCO (Voltage controlled oscillator) and the actual VCO itself on the mainboard in your typical moog for example, is that mechanical circuitry is prone to variation from heat and wear, while a digital emulation is done as data, and done in a more refined processor. Material sciences show that metals, and semi-metals will undergo deformation, thermal creep, and all kinds of other fun things that lead to variation in this signal... This wear and tear causes some detuning and variation in your signal output...and would be the only differing aspect. (Resistance in wires also varies with temperature, and the wires expand slightly with heat. Physics II shows us that a larger diameter wire carries more current with less voltage...these are some of the variables that take place)
This detuning and variation is the "warmth" that people speak of, and you can bet that deformations in signal output could also be emulated...
Think about it...the keyboard is simply using a circuit-board with VCO's to create a waveform that can be sent out as an analog signal and sent to the speakers. Your speakers then take this analog signal and convert it to mechanical energy. A digital synth performs a similar, but not identical operation using your processor/soundcard/whatever. Digital signal gets sent to the D/A and sent out as analog the same way. (There...)
| quote: | | but not by comparing the saw waves of 2 synths |
I'm speaking purely hypothetically here...but if you compared a sinewave created digitally that was converted into analog that matched one created with an analog instrument and found them identical...what would be your argument then? Something magical happens in the wires? Or through the air? Or the moog fairy did it..
Completely identical waveforms sent through the same speaker would sound the same would they not?
To avoid confusion I'm on two things at the same time here...Hypothetically it's possible and we can come close, in actuality a perfect solution/emulation isn't available, but they're damn close.
| quote: | | Regardless of a lot of the nonsense in this thread I'll add my own nonsense. Our ears evolved on analog. Defining "better" as more enjoyable to listen to, analog is better imo. Is it cheaper or easier to use? Of course not. Analog corresponds to changes in air pressure. Digital is based on numbers and needs to be converted to analog before it can even be heard. |
Yes this thread is nonsense...lets get back to making music.
Also, quoting directly out of an easy to google digital synthesis vs. analog thread to show I'm not full o' sheisse (but I really was) :
Digital Synthesis
| quote: | | Digital Synthesis has some benefits over analog but also has limits. Most components of analog synthesizers are copied by digital counterparts. Digitally Controlled Oscillators (DCO) perform the same task as VCO's but do so without the possibility of going out of tune. DCO's were employed in many hybrid synthesizers like the Korg Poly-61 and Roland Juno-106. Unfortunately each progressive octave up the DCO loses half of the waveform ramp and therefore either loses strength or requires another form of compensation in the amplification. Towards the end of the 1980's hybrid synths became less common and the filter and amplification of signal began to be entirely microprocessor and software based. This allowed the synthesis to be more reliable and less prone to glitches and detuning. Due to the microprocessor based synthesis waveforms have the peaks cutoff and are less accurate. For this reason digital sounds are commonly described as thin and metallic. |
So yes, you're quasi right in stating that people grew up with that analog sound and thus it must be better because of nostalgia and that's what trance junkies are used to hearing. Had analog come after digital (lol? hypothetically) we may have preferred the sound of digitally created synths.
Only being 23 and having honestly missed that era, I can happily disagree. I do prefer the sound of a synth produced from a real analog instrument. It's hard to describe, but it's just warmer and fatter than digital synths. Do these particular sounds have their place? Sure...However, I find that some digital synths sound great for what they are and wouldn't be replicable by analog gear. Some of my favorite "NRG arps" are metallic sounding and quite unique to digital synthesis.
Now, knowing the mechanical engineering world like I do, it's probably only a matter of time before the calculations are done on the variations in the circuitry of an analog synthesizer due to thermal stress/strain in the material to earn someone their PhD. Taking digital (math and numbers) and outputting an analog equiv. (electrical signal sent to the speaker)
And yes, those numbers are in fact calculable, complex as fuck, but not impossible. I imagine it would have to take into account every variable from a DC input, as higher voltages = more temps. You could theoretically take into account material defects on average within a certain percentage as well. From there the model needs to account for age, because stress/strain over time is what causes deformation... In all honesty this probably wouldn't be worth anyone's time or money when they could just build an analog keyboard that just does it naturally.
However, if a theoretically good model WAS obtained, your end product would be very much similar to, if not identical to that of an analog synth.
And again, what you HEAR as a synth, is most basically a waveform, or series of waveforms that were generated by varying voltages from a DC current source, (or AC, but I'm not familiar with AC) converted from analog signals sent your speakers, to mechanical air waves, picked up by the earbones, transmitted through the eustachian tube,chochlea, turned into electrical signal @ the cochlear nerve and transmitted to our tiny, mammalian brain.
There...success, took an essay full of bullshit nobody will read and refined it into something that's on the whole mostly correct. weeee, who cares about being right/wrong or analog vs. digital. *goes to bed*
Last edited by theterran on Jan-15-2011 at 06:30
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