EricHaptics

3년 전discuss

I’ll be interested how they will implement the interactions framework with hands and eye gaze at that price point. Meta’s hand / eye interaction stack is not great after several years. Apple’s one looks ok, to be tested. Better market it as a dumb screen and focus on visual clarity. A large 2D surface would go a long way in the market if done properly.

EricHaptics

3년 전discuss

Funniest comment I read in a while

EricHaptics

4년 전discuss

Yes 1 micron at 150 Hz can be felt.

Can’t at 10 Hz.

It is the usual stuff.

Check out the work of Vincent Hayward on cantilevers and piezo.

EricHaptics

4년 전discuss

Ok, I read the article.

I was not able to locate the frequency response profile of the actuator, which is what really counts.

Rapid moving sensations are really not an issue in todays market.

I hope one day someone comes up with something there which does not requires a backpack of pumps like Haptx.

That moment is when magic will happens in haptics

EricHaptics

4년 전discuss

Sure.

Perceptual modes are specific mechanical stimuli we learned to recognize as specific sensations.

Some of them are: stiffness which is skin indentation and tendons strain in function of space, vibrations which is skin indentation in function of time for frequency above 10/20 hz.

These modes resides a bit on the neurophysiology of touch (how mechanoreceptors respond) and a bit on how we learned to recognize touch sensations.

The problem reside that the first thing you want to do is manipulate, not simply touch.

Manipulation is a bitch because it mostly needs small indentation of the skin which are 1-3 mm of continuous displacement at 1 mm resolution under the fingertip.

They piezo they are using displaces 1 mm at the resonance frequency, I imagine 150 hz (I believe?) or something similar, not in continuous (again, I believe).

Which means that a contact on the sensor is rendered as a local vibration, which requires a lot of mental gymnastic to think of it as a contact.

That is the haptic metaphor. Basically you expect an indentation and you get a vibration, and this sucks and for users.

If they got it in static displacement that is cool and might be something noteworthy

EricHaptics

4년 전discuss

Nothing new under the sun. The innovation everyone is waiting in haptics is on the actuator side.

The patches are vibrating, but humans perceive static and low frequency forces mostly.

This create a haptic metaphor which always sucks.

The rest is easy, or easy to figure out.

Never heard telehaptics as term in my whole life

EricHaptics

4년 전discuss

Thanks!

I wrote few of these algorithms myself for some other products.

There is always a trade off between fidelity and immersive feeling because the basses were not meant to be used with such product in mind.

With my company, Interhaptics, we built a full stack pipeline only for haptics. Our tech is at the basis of the MPEG haptics encoding standard coming out shortly.

We have been recently acquired by Razer, look out for news of you are interested to build for touch natively

EricHaptics

4년 전discuss

I don’t know the strap 3, never tested.

For the buttkicker the real issue is the chair itself. It filters a ton of stuff and rattles.

A good experience are the Dbox chairs, the problem is that they cost 5 k.

Relevant club podcast with the CTO https://open.spotify.com/episode/6ERkgfJxm7QCZlp1p5eIGD?si=E...

EricHaptics

4년 전discuss

All these products are cool, the only issue is that they usually apply dsp to the sound and distort the output to enhance the haptics experience.

If he is looking to get the bass feeling of the music you want the pure input.

EricHaptics

4년 전discuss

No idea, worst case scenario the stator comes out and you find your limit :)

The key is to mount them properly on the body to maximize mechanical coupling. You don’t need a lot of watts if the losses are almost zero.

If you want more, build an array of actuators and spread them out.

More immersive feeling compared to a stronger one.

EricHaptics

4년 전discuss

Quite easy to build. The problem is to get ahold of the parts.

Get a well know console controller, take out the two actuators and mount them in any other form factors you like.

You can drive them with an audio pipeline, they are effectively a 4 ohm speaker. Attach them to a sound card and you can have your stereo haptics subwoofers.

You have to filter out aggressively the resonance frequency of the actuator to get a flattish response. Not that subpac or the other folks do so

EricHaptics

4년 전discuss

This is fun, I do haptics for a living and I would have never expected to have something to say here.

The way around the seat shaking problem is to use wideband vibrotactile actuators tuned to respond between 10 and 250 Hz on different part of the body. They can be embedded is seat or on a vest.

The mechanical energy transfer is local, can be tuned individually, and consumes much less energy.

There are also several successful products leveraging this principle like the Razer Hypersense line, feel belt, and others.

A recent company acquired by Meta, Lofelt, started their tech doing exactly this.

If you want to jump into the haptics rabbit hole, I animate a podcast [0] with some industry folks. Fascinating topics.

[0]: www.thehapticsclub.com

comments