Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Wow & Flutter test 4 Amplifiers !
Wow & Flutter test 4 Amplifiers !
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 9th May 2013, 01:23 PM   #1
Zero D is offline Zero D  United Kingdom
diyAudio Member
Join Date: Aug 2009
Default Wow & Flutter test 4 Amplifiers !

WOW indeed ! And it's not April the 1st either

P7-5 New Techniques for Evaluating Audio Amplifiers via Measuring for Induced Wow and Flutter and Differential Phase Distortions—Ron Quan, Ron Quan Designs - Cupertino, CA, USA
In the past, mechanical systems were measured for Wow and Flutter or frequency modulation but not amplifiers. Instead, amplifiers are typically measured for intermodulation and harmonic distortion. A new method for audio amplifier/device performance measures frequency modulation effects and differential phase distortion. Frequency and phase detectors are used to evaluate induced frequency and phase modulation from an amplifier under two conditions. The first condition has a low frequency signal inducing the modulation on a high frequency signal. The second condition has a high frequency AM signal inducing the modulation on a lower frequency signal. Practical design topologies for the new test methods are shown and the results of the new testing methods are tabulated.

Should be interesting to see what they discover etc.
  Reply With Quote
Old 9th May 2013, 02:56 PM   #2
mickeymoose is offline mickeymoose  Canada
diyAudio Member
Join Date: Nov 2008
Interesting! Marrying taperecorder principals with colour TV broadcasting technology. Get to work AP! My shares will go up! E
  Reply With Quote
Old 9th May 2013, 06:58 PM   #3
JMFahey is offline JMFahey  Argentina
diyAudio Member
JMFahey's Avatar
Join Date: Mar 2009
Location: Buenos Aires - Argentina
They *already* invented COLOUR TV?
You must be kidding!!
Stop reading Science Fiction, it'll burn your brain

As of Mr Ron Quan, I humbly suggest he invents more useful and urgently needed Scientific Devices, including but not limited to:
(These are just examples)

1) a Thermometer to measure fever in fish and reptiles.

2) a Radar navigation system for flying turtles, snails and elephants, so they can land safely at night or in bad weather, even in unmarked Airports.

3) a GPS based location system, permanently attached to Mount Everest, so it's easy to find it when it goes hitch hiking.

4) ..... add your own .....

EDIT: in Argentina we have a popular saying: "más inútil que cenicero en moto" = "more useless than an ashtray in a motorcycle".
Maybe some of that applies here

Last edited by JMFahey; 9th May 2013 at 07:00 PM.
  Reply With Quote
Old 10th May 2013, 04:35 AM   #4
gmphadte is offline gmphadte  India
diyAudio Member
Join Date: Jul 2003
Location: Dona paula, Goa
Non-rechargeable solar powered torch.
  Reply With Quote
Old 10th May 2013, 03:02 PM   #5
Zero D is offline Zero D  United Kingdom
diyAudio Member
Join Date: Aug 2009
@ JMFahey

I did give a

I posted it as i found it peculiar that people research stuff like that. Plus i'm surprised that AES are allowing it ! I don't expect we'll get anything useful out of it, but ya never know !

Also i just happened to notice it close to soomething else i was looking at.

LOL, yeah it's a while since i've heard about the ashtray on a motorbike Good one
  Reply With Quote


Wow & Flutter test 4 Amplifiers !Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Story on Wow - Flutter correction Pano Analogue Source 4 3rd March 2013 03:56 PM
WOW & FLUTTER or maybe something else? Arckivio Analogue Source 25 26th February 2013 07:19 PM
Systemdek Help, wow and flutter prob. Humanjava Analogue Source 12 22nd July 2012 09:37 PM
how to? simple wow/flutter measurement Steerpike Analog Line Level 14 27th September 2008 07:45 PM
Using wow and flutter meter JesseG Parts 7 6th March 2006 01:10 AM

New To Site? Need Help?

All times are GMT. The time now is 02:35 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio