Adjusting Etherwave for Pitch Linearity

Posted: 1/1/2017 6:43:03 PM
Ginette

From: South shore of Montreal

Joined: 2/7/2016

Thank you again Thierry,,unfortunitely I am not on Facebook,,,should ask my son how it works,,, maybe one day .

 

Thank you again.

Ginette

Posted: 3/19/2017 3:27:46 PM
senior_falcon

Joined: 10/23/2014

Ginette wrote:   ".... but what is an aluminum UFO tip ornament  ?  Sounds pretty !"

I have added a photo album with pictures of my UFO pitchrod ornament.  

 

Posted: 1/19/2025 12:09:41 AM
jsherm

Joined: 1/6/2025

A screw driver is only needed when the zero beat point is too close to the antenna, even with the pitch knob fully turned to the left.

I've been having a heck of a time trying to tune the pitch to fit my hand from first position to eighth position for an octave. And I've been wondering if I needed to use the red screwdriver. I really didn't want to open it up my Etherwave Standard. Finally the answer I've been looking for. I have no problem finding zero beat. I'm just having trouble getting an octave with my hand consistently using Carolina Eyck's finger positions. I think my hand is just too big for them. Or I just have to practice more. I'm not sure. But I feel like the octaves don't match up. 

Posted: 1/19/2025 7:02:47 PM
JPascal

From: Berlin Germany

Joined: 4/27/2016

I have no problem finding zero beat. I'm just having trouble getting an octave with my hand consistently using Carolina Eyck's finger positions. I think my hand is just too big for them. Or I just have to practice more. I'm not sure. But I feel like the octaves don't match up.

The size of the hands and the geometry of the entire body influence the pitch field through their capacitive effects. The finger positions according to Carolina Eyck require a zero point position further away from the antenna for large hands than for small hands. For example, 6 octaves small hands 48 cm; large hands 60 cm. Good linearity is only given in a certain range within these distances. But 3 to 4 octaves are usually sufficient and should always be possible with the Etherwave standard using the Eyck method.

Posted: 1/19/2025 7:24:28 PM
jsherm

Joined: 1/6/2025

The size of the hands and the geometry of the entire body influence the pitch field through their capacitive effects. The finger positions according to Carolina Eyck require a zero point position further away from the antenna for large hands than for small hands. For example, 6 octaves small hands 48 cm; large hands 60 cm. Good linearity is only given in a certain range within these distances. But 3 to 4 octaves are usually sufficient and should always be possible with the Etherwave standard using the Eyck method.

This seemed to have worked! I just set the zero beat to be way behind me until I was able to tune the pitch to give me 1st position and 8th position be an octave, and was able to play Somewhere Over The Rainbow quite easily! Why does noone ever explain this in their tutorials.

I just got done shooting an extensive tutorial video for beginners - not necessarily to teach them how to use the theremin, but to show how difficult it is and what to expect from it. It's a more realistic video that I wish I had seen before buying an Etherwave.

It is rendering out now and I will be uploading it within the hour. I hope it helps new people who are interested in buying a theremin and learning how it works! I sure as heck would've benefited from having a video like it.

Posted: 1/19/2025 9:33:35 PM
JPascal

From: Berlin Germany

Joined: 4/27/2016

I am delighted about that. I'm sure there will be some further advice on this in the forum, including tutorials and lessons from professionals. 

The video is direct and authentic, I look forward to the next videos with your progress. Your combination of piano and violin experience fits very well with the challenges on the theremin.

Posted: 1/20/2025 1:04:26 AM
jsherm

Joined: 1/6/2025

Thank you so much for your kind words! I look forward to tutorials and lessons from the pros. I've been receiving many comments on Facebook in the Theremania group from people. Very helpful advice! I hope to progress over the coming weeks / months to try and at least get the pitch tuning to work for my frame. That is the main challenge I'm facing.

I tried making the zero beat further away a bit ago, but still struggled to get the notes right, and/or the octave. Something seems to be missing. One thing is clear, I believe you are right. A professional could help me figure out my tuning struggles, which would then allow me to actually practice intonation.

I thought being a violinist, and knowing my way around a piano would help me with the theremin a bit more than it has to be honest!

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