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I would sample the living H out of the CNC if I were youI’m thinking about getting a CNC machine for the garage so I can construct my own toy piano and use it to write my opus.

/C

Statistics: Posted by deastman — Sun Oct 21, 2018 11:58 am

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f**king marvellous - the sound of loads of types of guitars, but you only have to change one set of strings/don't have to get up to get another guitar/don't trip over the bastards. Also does a mean banjo.

Statistics: Posted by donkey tugger — Sun Oct 21, 2018 11:31 am

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I’m thinking about getting a CNC machine for the garage so I can construct my own toy piano and use it to write my opus.

I would sample the living H out of the CNC if I were you /C

Statistics: Posted by DrGonzo — Sun Oct 21, 2018 11:25 am

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but i like plugging my guitar or synths in and just getting lost, sometimes its awesome. other times not quite so.

im the weak link

Statistics: Posted by vurt — Sun Oct 21, 2018 11:19 am

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Software... it's probably

What's your favourites that gives you that perfect workflow?

/C

Statistics: Posted by DrGonzo — Sun Oct 21, 2018 11:03 am

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A way to look at slew/integration simple analog-circuit-wise--

An RC (resistor-capacitor) lowpass filter does the exponential thing. It approaches the "new target voltage" by increasing about 63% of the distance remaining in each Time Constant (or decreasing to about 37% of the distance remaining in each Time Constant). So if we have initial voltage of 0 volts, a new "target" voltage of 1 volt, and a Time Constant of 1 second, it will reach about 0.63 volts after 1 second, and then (0.63 * (1.0 - 0.63)) + 0.63 after 2 seconds = 0.863, etc. Traveling about 63% of the remaining diminishing distance to travel to the target, on each new Time Constant period. Look up "Time Constant" in wikipedia and it gives the little equations based on powers of the constant e.

That is called an integrator, but so far as I recall it is a "leaky integrator" which gives the curved shape output from a steady DC input.

OTOH the calculus integration of a DC step input would be a ruler-straight line rising or descending at some angle. The bigger the DC step, the steeper the rising or descending straight-line angle. It is easy to get "true integration" with simple analog by putting a capacitor in the feedback loop of an opamp, or alternately driving a capacitor from a "constant current" source rather than a "constant voltage" source as was described above for the simple RC lowpass filter.

That trick of constant-current-driven capacitor, or capacitor in opamp feedback loop, is also typically how they get the straight lines in sawtooth and triangle VCO waveforms. Also the trick used for analog "linear segment" types of ADSR envelopes. The kinds of envelopes that have straight lines on the attack, decay, sustain and release line segments.

For a linear slew rate limiter, it would have to be a little fancier than just a capacitor in the opamp feedback loop. Those "true integrators" just keep on linearly increasing or decreasing until they peg out on a power supply rail. Same way if you draw the calculus integration on graph paper, the line doesn't stop but eventually runs off the top or bottom of the graph paper. So the circuit would need to be a little fancier so that it would linear-slew, but then it would be smart enough to know how to stop slewing when the output reaches the same value as the input. Keep the output from "running off the edge of the graph paper".

I don't know, I think it goes deeper than that. Nah I'm kidding. I know nothing of electronics An RC (resistor-capacitor) lowpass filter does the exponential thing. It approaches the "new target voltage" by increasing about 63% of the distance remaining in each Time Constant (or decreasing to about 37% of the distance remaining in each Time Constant). So if we have initial voltage of 0 volts, a new "target" voltage of 1 volt, and a Time Constant of 1 second, it will reach about 0.63 volts after 1 second, and then (0.63 * (1.0 - 0.63)) + 0.63 after 2 seconds = 0.863, etc. Traveling about 63% of the remaining diminishing distance to travel to the target, on each new Time Constant period. Look up "Time Constant" in wikipedia and it gives the little equations based on powers of the constant e.

That is called an integrator, but so far as I recall it is a "leaky integrator" which gives the curved shape output from a steady DC input.

OTOH the calculus integration of a DC step input would be a ruler-straight line rising or descending at some angle. The bigger the DC step, the steeper the rising or descending straight-line angle. It is easy to get "true integration" with simple analog by putting a capacitor in the feedback loop of an opamp, or alternately driving a capacitor from a "constant current" source rather than a "constant voltage" source as was described above for the simple RC lowpass filter.

That trick of constant-current-driven capacitor, or capacitor in opamp feedback loop, is also typically how they get the straight lines in sawtooth and triangle VCO waveforms. Also the trick used for analog "linear segment" types of ADSR envelopes. The kinds of envelopes that have straight lines on the attack, decay, sustain and release line segments.

For a linear slew rate limiter, it would have to be a little fancier than just a capacitor in the opamp feedback loop. Those "true integrators" just keep on linearly increasing or decreasing until they peg out on a power supply rail. Same way if you draw the calculus integration on graph paper, the line doesn't stop but eventually runs off the top or bottom of the graph paper. So the circuit would need to be a little fancier so that it would linear-slew, but then it would be smart enough to know how to stop slewing when the output reaches the same value as the input. Keep the output from "running off the edge of the graph paper".

I'm just wondering what sort of electronics are in the Moog one that would differ so greatly from say a Dave Smith Prophet Rev 2(16 voice) which can be bought for around 1700 pounds, here in the uk. What I'm saying is if Dave Smith can make a 16 voice poly synth for that kind of price then why can't Moog do it? Is the Rev 2 based on loads of chips and the Moog one made with a more descrete electronic design?

Statistics: Posted by synthmagic — Sun Oct 21, 2018 10:40 am

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Nope. You have not read a single answer here.

Same issue in the OPs mixer thread ... Statistics: Posted by thecontrolcentre — Sun Oct 21, 2018 7:39 am

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http://www.muzines.co.uk/articles/4-cha ... oject/4064

Statistics: Posted by VariKusBrainZ — Sun Oct 21, 2018 3:05 am

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I want to use the tape recorder as a delay fx

Of the several tape machines I had, none could pull that off. The Revox of a friend could. So don't hold your breath on that. The machine needs separate recording & playback heads and monitoring outputs from playback while recording. Consumer tape machines could not do this, not designed to be that flexible. Look out for an Akai or Revox next.

Nope. You have not read a single answer here.if I understand this correctly I can use the radio/micro connection as a input and for the LOUDSP I need to solder a couple of wires so that I can send the output of the tape machine in to my mixer.

Loudspeaker outputs are too loud and wrong impedance. You'll pump 5 watt into a line input and blow up the mixer

Mic input should be avoided for line signals as well.

The din plug labelled "radio" is all you need: stereo inputs & outputs in a single connector.

The radio served as amp and input switch.

Statistics: Posted by BertKoor — Sat Oct 20, 2018 10:22 pm

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Thanks for the response! A quick search and I found the cable I was looking for.

I want to use the tape recorder as a delay fx by sending the signal to my AUX channel and also on a stereo channel.I if I understand this correctly I can use the radio/micro connection as a input and for the LOUDSP I need to solder a couple of wires so that I can send the output of the tape machine in to my mixer.

Statistics: Posted by LETHWOLF — Sat Oct 20, 2018 5:19 pm

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Full manual

Statistics: Posted by SLiC — Sat Oct 20, 2018 12:51 pm

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