Creating Audio ESTIM

General Chit Chat about E-Stim. Not just E-Stim Systems, but ErosTek, PES and others.
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Healer
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Joined: Wed May 11, 2016 2:52 am
Location: Massachusetts

Creating Audio ESTIM

Post by Healer » Thu Aug 17, 2017 4:51 am

Greetings All,

I suppose everyone is having a decent summer and all are healthy and stimming away. I certainly am..stimming that is, enjoying the heck out of my 2B and EM140.

I have built a stim cart that rolls around and contains my audio files on a support floor of the cart. The file case is designed to hold 25 audio CD's. The cart has a sloping front. At the center of the single support leg is a junction box that accepts the tens pins and translates the input tens through a terminal strip circuit to more robust cables and alligator clips, the latter so that they can attach easily to any one of my DIY electrodes without fear of damaging the fragile tens pins cables.

The cart stores all my audio files in the lower small floor while the upper shelf stores the EM140 and the 2B so they are side by side and their individual cables are secured to the junction box.
Just below my two Stim Boxes is my MP3 player, And its output to a dual channel plug that talks to the speakers as well as the input to either my EM140 or my 2B depending on my needs :mrgreen: at the time. I designed my cart around the style and scale of the typical oscilloscope cart that one see's in electronics shops. When I sit to stim, everything is within reach and nothing in my lap except the necessary items to relax and stim. :roll:

I provide mains power via a power surge protection AC power strip.

That said, what I really wanted to talk about is the use of Audacity to make audio stim music. I must say that most of my files are from downloads of the SmartStim site, and they are great. But, I wanted to try the challenge of making my own.
So, lately, I have been tooling around with Audacity, and, by the way, thoroughly enjoy the software ease of use (KUDO's To Audacity Developers).

I discovered my "trigger" frequency to be that of 143.6 Hertz. I make stereo tracks usually the left channel with 143.6 Hertz, and the right channel at 143.0. When I get the tones installed, which is quite easy, I then experiment with either three effects: Phaser, Tremolo, and WahWah.
All of course around the trigger frequency of 143.6 Hertz. By trigger, of course, I mean that which makes the short arm come to attention. :lol:

Anyway, sorry for being so long winded. I wonder though, before I sign off, if any of you fellow stimmers are using Audacity and are coming up with some good effects??
Let's here from you and your results.

Thanks for listening
Healer



hedonist
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Re: Creating Audio ESTIM

Post by hedonist » Sun Sep 03, 2017 6:16 pm

I'm having a go at this as well, and like you, using audacity. Just got a 2B.
Well done on finding the perfect frequency - how did you do that, by just producing lots of samples and narrowing it down?

Having experimented with my new 2B one thing I have found is that most of the specific downloadable e-stim audio files are either too random and/or not progressive enough. Actual music seems to me to be far too random, and probably has too fast a pattern for the 2B to pass on faithfully such that it 'feels' like it sounds.

I had far better luck switching to the programs, mainly 'wave' and 'waterfall' on my first foray as they have very smooth, noticeable transitions from low to high power.
What I'm planning to do is a constant tone (maybe of around 143Hz :) ) and use Audacity's envelope tool and maybe the fade in/fade out tools to form that into a 'pattern' of maybe 2-3 seconds long, which then develops/progresses over time.
One other idea I had was to put it along side an music track - the output of which is only actually used for listening, but it is in sync, so for instance the pattern develops into a different, and possibly louder, one, during the chorus, for instance.

Obviously the cycle of the pattern could also match the BPM of the song. (Does this have a better term other than what I am calling the BPM of the pattern?)

One thing I wondered, is that playing a constant tone in Audacity doesn't seem to feel the same as the constant program mode. What sort of shape of sound wave would cause the 2B to produce a constant-like output?

Healer
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Location: Massachusetts

Re: Creating Audio ESTIM

Post by Healer » Wed Sep 06, 2017 5:32 am

Hi "Hed"

I found the 143.6 frequency using a multimeter I have that measures, among other variables, frequency. I measured the frequency while in the tri-phase mode. :mrgreen:

The thrust output was lingering around 143.6, so I used that as a start point in Audacity. I set up stereo tracks so I could give one track 143.6 and the other track (the right track) 143.0
Doing it this way, creates a pulsing effect even before trying more effects. :D

Anyway, I use phaser, with each track but with offset start frequencies. I build a 10 minute audio that is broken into 2 minute increments. It is in these increments that I will experiment with the varying frequencies and effects.

My 2b is still at 2.104 even though I have the software package to update it I am kind of reluctant to upgrade it just yet...but, sooner or probably later when I am absolutely bored this winter I will plunge into an upgrade.

My audio is played on an inexpensive MP3 cd/dvd player. I have not experienced any degradation from the 2b circuitry that suggests it is not playing the audacity with fidelity.

Also. I play my audacity audio on my EM-140 and although it is a single channel estim box, I get great effects by virtue of the source combined signal of the EM and the audacity.

Try using the tutorials for audacity. One thing to try also , is creating silence. This is an old idea I got from Smartstim. When I find the web page and title I will send the instructions to you. They are a bit complex but nothing that cannot be learned via repetition. Silence method gives you a nice pulse that is not spiky. :P

G'day
Healer

hedonist
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Re: Creating Audio ESTIM

Post by hedonist » Wed Sep 06, 2017 8:22 pm

Cool. What is the difference between a wave form that is a sine wave, and one that looks like a square wave with jagged tops and bottoms?
How do you generate the latter, and is it any better?

(I'd post a pic but I don't think you're allowed!)

I've had a play, and I don't think my idea matching to music is particularly effective/worth the effort. Basically music is too fast, and interestingly most music doesn't actually keep a mathematically perfect beat over the course of a whole song. It might sound it to a musician, but it's not in perfect time according to Audacity.

I've had a play with some existing downloaded tracks, very enjoyable - but interesting - still learning and getting the hang of them.

I find a lot of them are far too variable - if I turn the gain on the 2B down to the maximum that's comfortable on the 'high' bits of the track (about 12% on plugged-in low power mode with a triphase?...with the ipod volume about 60-70%... don't know if that's a lot or not much???) - then there are large bits of the track that I can't feel at all - although the 2B is showing some dancing bars. Any idea what I'm doing wrong here - should I have the ipod volume higher maybe and the gain lower, or the other way round?

What I'm going to focus on is trying to take bits from, or create new bits similar to, existing tracks that I like, and combine them.
I am going to make 'snippets', e.g. simple fade in, simple fade out, throb, continuous, of different lengths, then make 'patterns' that are combinations of 'snippets', then have a random (or possibly semi-random) sequence of those patterns.

Healer
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Re: Creating Audio ESTIM

Post by Healer » Fri Sep 08, 2017 5:58 am

Hi Hed,

Square waves have the highest of all harmonics...That's all a square wave is is harmonics. Hence you will get some interesting tingles more than in a sine wave.

I tried square wave but wasn't all that impressed and so have stayed within the realm of sine wave.

I use my 2b with both channels sync'd. When I use stereo I start the levels at 0%. I then bring up the gain on the audio player and eye-ball the gain on the 2b screen to get the bars as equal as possible considering differences in left and right channel. Once I am satisfied with the bars, I then turn up the 2b gain to a tingle and then more until I get to a pleasurable output. I judge the results by my cock stiffening and the corona filling in the corona electrode.

One of my main goals is to soften the stereo signals. The smartstim downloads that I have are some smooth and some not. But, they are also higher in frequency that is out of my trigger zone and so I want to create the same smoothness as smartstims audio but in my "trigger frequency" zone.

As an aside, I sent you a PM and am not sure you got it. It was about creating prostate stimulation waveforms with Audacity. This information can be found at the smartstim site. I am guessing you have registered at smartstim. To find the article, log-on of course, then select DIY ELECTRODES, once their, go to the search box, and type in: HOW TO CREATE PROSTATE STIMULATION WAVEFORMS WITH AUDACITY. The search will take you to about six or so subjects. The one you want to open is by "smallhorse" circa "Sun Aug 30 2015. I printed out the instructions a year ago and am using them now to create the audio for my trigger zone. I tried the prostate stim using his frequencies and it was quite pleasant. Now, instead of the prostate, I am using the "silence" technique to create the trigger frequencies of 107.00 Hz and 143.6Hz.

If you haven't registered at Smartstim you should because it is a great overall site to learn all the multi-faceted aspects of stimming.

Meanwhile, enjoy exploring Audacity,

Regards,
Healer

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