Sample rate display - Page 2 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

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
Reply
 
Thread Tools Search this Thread
Old 8th May 2010, 07:00 AM   #11
dangus is offline dangus  Canada
diyAudio Member
 
Join Date: May 2004
Location: Vancouver Island
Maybe a PLL (phase locked loop)? [edit] Yes, and you've explained the part I wasn't sure about: how to clean it up so the PLL would have something easier to digest.

If you don't need to measure the sample rate precisely, but just want to know if it's 32/44.1/48k, consider exploiting the VCO control voltage (from the PLL) rather than doing it all digital. That could (after some filtering and buffering) run a moving coil meter. (Get a cool vintage one from a ham radio swap meet.) Or, for a more "modern" (as in 1960s/'70s) look, use a linear scale bar graph display driver in dot mode to turn on lamps or LEDs for each rate of interest.

Last edited by dangus; 8th May 2010 at 07:15 AM.
  Reply With Quote
Old 8th May 2010, 12:27 PM   #12
staki is offline staki  Switzerland
diyAudio Member
 
Join Date: Dec 2007
Location: 2504 Biel
Quote:
Originally Posted by MiracleZZ View Post
Here come the sch~
Ok ! very smart !! Thank you very much for the help ! I think I will use a PIC to make the counter.....
  Reply With Quote
Old 8th May 2010, 12:34 PM   #13
staki is offline staki  Switzerland
diyAudio Member
 
Join Date: Dec 2007
Location: 2504 Biel
Quote:
Originally Posted by dangus View Post
If you don't need to measure the sample rate precisely, but just want to know if it's 32/44.1/48k, consider exploiting the VCO control voltage (from the PLL) rather than doing it all digital. That could (after some filtering and buffering) run a moving coil meter. (Get a cool vintage one from a ham radio swap meet.) Or, for a more "modern" (as in 1960s/'70s) look, use a linear scale bar graph display driver in dot mode to turn on lamps or LEDs for each rate of interest.
That's funny indeed !
For something even funnier I could convert this voltage with an internal ADC from a PIC, and display it on a LCD.......
  Reply With Quote

Reply


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
USB sample rate limitations Martin Prothero Digital Line Level 4 25th January 2010 10:45 AM
Asynchronous Sample Rate Conversion werewolf Digital Source 122 18th December 2009 08:10 AM
PMD100 Max Sample Rate? Filburt Digital Source 7 23rd May 2008 05:30 AM
DSO Bandwidth vs sample rate bzo Parts 3 23rd February 2004 04:53 PM


New To Site? Need Help?

All times are GMT. The time now is 02:10 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2