Welcome to the Piano World Piano Forums
Over 2.7 million posts about pianos, digital pianos, and all types of keyboard instruments
Join the World's Largest Community of Piano Lovers (it's free)
It's Fun to Play the Piano ... Please Pass It On!

SEARCH
Piano Forums & Piano World
(ad)
Best of Piano Buyer
 Best of Piano Buyer
(ad)
Piano Life Saver - Dampp Chaser
Dampp Chaser Piano Life Saver
Find a Professional
Our Classified Ads
Find Piano Professionals-

*Piano Dealers - Piano Stores
*Piano Tuners
*Piano Teachers
*Piano Movers
*Piano Restorations
*Piano Manufacturers

Advertise on Piano World

(ad)
Accu-Tuner
Sanderson Accu-Tuner
Who's Online Now
104 registered members (aphexdisklavier, AndrewJCW, ando, akc42, amyram, AntonioC, 36251, 31 invisible), 1,825 guests, and 7 spiders.
Key: Admin, Global Mod, Mod
(ad)
Estonia Pianos
Estonia Pianos
Quick Links to Useful Piano & Music Resources
Quick Links:
*Advertise On Piano World
*Free Piano Newsletter
*Online Piano Recitals
*Piano Recitals Index
*Piano & Music Accessories
*Live Piano Venues
*Music School Listings
* Buying a Piano
*Buying A Acoustic Piano
*Buying a Digital Piano
*Pianos for Sale
*Sell Your Piano
*How Old is My Piano?
*Directory/Site Map
*Virtual Piano
*Music Word Search
*Piano Videos
*Virtual Piano Chords & Scales
Previous Thread
Next Thread
Print Thread
Hop To
Question for Robert Scott #2576471
10/05/16 08:33 PM
10/05/16 08:33 PM
Joined: Jan 2010
Posts: 3,087
Montreal, Quebec, Canada
M
Mark Cerisano Offline OP
3000 Post Club Member
Mark Cerisano  Offline OP
3000 Post Club Member
M

Joined: Jan 2010
Posts: 3,087
Montreal, Quebec, Canada
Hi Robert,

There's been some reference here and on PTI about ETDs and how they work.

I maintain that there is some dampening that must go on in the algorithm to deal with the noise and the fluctuations of the string when reading it.

Without giving away any details on how Tunelab works, am I in the ballpark?


Mark Cerisano, RPT, B.Sc.(Mech.Eng), Dip.Ed.(Music)
www.howtotunepianos.com
(ad 800)
PTG Journals
PTG Journal
Re: Question for Robert Scott [Re: Mark Cerisano] #2576510
10/05/16 11:28 PM
10/05/16 11:28 PM
Joined: Dec 2003
Posts: 348
Minnesota
R
Robert Scott Offline
Full Member
Robert Scott  Offline
Full Member
R

Joined: Dec 2003
Posts: 348
Minnesota
Mark, there is no explicit dampening to smooth out pitch variations in ETDs, but dampening does occur implicitly. In TuneLab for example, the Spectrum Display is updated about 3 times per second. On each update, the pitch of the string may be varying during that 1/3 of a second time period, but the spectrum calculation inherently forms an average picture of the pitch during that time period. Going from one update to the next, there is no averaging. So any pitch variations that occur slowly enough to be different from one update to the next will be reflected in a change in the location of the graphical peak.

The Phase Display is a little different. It doesn't actually measure pitch. It measures phase. A changing phase is equivalent to a pitch offset, much like aural beat detection. That display updates at a faster rate than the Spectrum Display, so it is more sensitive to shorter term pitch variations. An unstable string will result in an jiggling pattern. However the real job of smoothing the Phase Display happens in the eyes and the brain of the user. Even if the display is jiggling, your eyes can discern an average pitch offset by tracking the overall movement of the pattern. The longer you wait to make this determination, the more smoothing you are applying. But the ETD doesn't do that smoothing. You do.


Robert Scott
Hopkins, Minnesota
http://www.tunelab-world.com

Moderated by  Piano World 

(ad)
Pianoteq
PianoTeq Bechstein
Shop our Store for Music Lovers!
PianoSupplies.com is Piano World's Online Store
Please visit our store today.
(ad)
Faust Harrison Pianos
Faust Harrison 100+ Steinway pianos
New Topics - Multiple Forums
What is this piece?
by pianoloverus. 10/15/19 07:53 PM
Heintzman & Co. project opinion
by D.P.. 10/15/19 05:56 PM
Playing by ear
by KuroMisaka. 10/15/19 02:47 PM
Why I’m convinced a good teacher is ESSENTIAL
by WeakLeftHand. 10/15/19 02:40 PM
A question for sight readers
by hag01. 10/15/19 10:36 AM
What's Hot!!
Our August Newsletter is Out!
------------------
Mason & Hamlin Piano Factory Tour!

-------------------
Posting Pictures on the Forums
-------------------
Forums RULES & HELP
-------------------
ADVERTISE on Piano World
Forum Statistics
Forums41
Topics194,537
Posts2,879,486
Members94,679
Most Online15,252
Mar 21st, 2010
Please Support Our Advertisers


Faust Harrison 100+ Steinways

Dampp Chaser Piano Life Saver

 Best of Piano Buyer

PianoTeq Bechstein
Visit our online store for gifts for music lovers


 
Help keep the forums up and running with a donation, any amount is appreciated!
Or by becoming a Subscribing member! Thank-you.
Donate   Subscribe
 
Our Piano Related Classified Ads
| Dealers | Tuners | Lessons | Movers | Restorations | Pianos For Sale | Sell Your Piano |

Advertise on Piano World
| Subscribe | Piano World | PianoSupplies.com | Advertise on Piano World |
| |Contact | Privacy | Legal | About Us | Site Map | Free Newsletter |


copyright 1997 - 2019 Piano World ® all rights reserved
No part of this site may be reproduced without prior written permission
Powered by UBB.threads™ PHP Forum Software 7.7.1