Digital Audio Signal Generator - 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 16th April 2010, 05:02 AM   #1
diyAudio Member
 
Join Date: Jul 2004
Location: Edmonton, AB Canada
Default Digital Audio Signal Generator

Just wondering what people are using (besides their ears) to test their gear.

Silicon Chip Magazine, March/April 2010 has a Digital Audio Signal Generator project by Nicholas Vinen. Sine, square, triangle, sawtooth, mixed, pulse sweep etc. and uses a PIC micro (dsPIC 33FJ64-GP802 at 40MHz) portable with LCD display. It has S/PDIF, TOSLINK digital and analog outputs (0.06% THD). 1Hz-24kHz at 48kHz sample rate, 1Hz-48kHz at 96kHz sample rate.
I think they used it on their Sept./Nov. 2009 "High-Quality DAC" project, getting 0.0006% THD+N at 1kHz overall. Distortion less than 0.006% up to 20kHz or 0.005% @ 96kHz.

I was thinking of building one or maybe PC soundcard-based tones (digital) would do? The kit is about $140 US at Altronics
  Reply With Quote
Old 16th April 2010, 09:39 AM   #2
dangus is offline dangus  Canada
diyAudio Member
 
Join Date: May 2004
Location: Vancouver Island
A soundcard makes sense, or there's test CDs. You can generate signals with software like Cool Edit and burn your own. Use an MP3 player if it supports digital out and lossless files.

But it depends on what you need it for. Sometimes there's no substitute for an oscillator that tunes with a knob, like if you're hunting for a resonance. And for some test purposes, you need an uninterrupted signal, so that narrows it down to dedicated generator or PC-based.
  Reply With Quote
Old 18th April 2010, 12:20 AM   #3
diyAudio Member
 
Join Date: Apr 2006
Location: Goulburn NSW
If you have an iPhone there are a number of applications to generate audio signals, sweeps, fixed tones, polarity testers, and db meters for very little money. For example you can probably get the whole lot for less than $10.00

I have several of these but as yet have not got around to trying them out on the system.

Worth looking at.
  Reply With Quote
Old 23rd April 2010, 09:47 AM   #4
diyAudio Member
 
Join Date: Apr 2010
A full range of digital audio test signals for maintenance, repair and calibration of professional audio equipment is generated. User test signals may be stored as uncompressed WAV-files in the DR2 memory.
  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
audio signal generator Altecboy Swap Meet 1 23rd March 2010 07:26 PM
Audio Signal Generator on eBay DreadPirate Equipment & Tools 8 3rd January 2010 02:31 PM
CRO wanted - ie Oscilloscope digital/analogue/signal generator priscared Parts 3 15th October 2008 10:17 AM
Wanted: one audio signal generator sdaudio2 Swap Meet 0 6th May 2007 01:04 PM


New To Site? Need Help?

All times are GMT. The time now is 05:31 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