Zelscope for $20 - Windows software scope! - Page 2 - diyAudio
Go Back   Home > Forums > Design & Build > Equipment & Tools

Equipment & Tools From test equipment to hand tools

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 March 2007, 02:56 PM   #11
diyAudio Member
 
tamasic1's Avatar
 
Join Date: Dec 2006
Default great info

I've never used a scope but want to try learning. I'm building a portable headphone amp and want to learn to use the oscope to tweak it. These look like some great programs. Any thought on which would be better for a novice?
  Reply With Quote
Old 8th March 2007, 03:12 PM   #12
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Great City of Turnhout, Belgium
Blog Entries: 7
Quote:
Originally posted by lineup
hello

Here is a Fourier analys
of a 1 kHz sinus 1.0 Volt,
generated by my fucntion generator


Using Zelscope Oscillope.

Picture was exported using the built 'Export as .BMP'
Then I made it smaller and converted.

It's difficult to read the (linear?) scale but it looks like 10% 2nd harmonic?

Jan Didden
__________________
I won't make the tactical error to try to dislodge with rational arguments a conviction that is beyond reason - Daniel Dennett
Check out Linear Audio Vol 7!
  Reply With Quote
Old 8th March 2007, 05:21 PM   #13
diyAudio Member
 
Pjotr's Avatar
 
Join Date: Nov 2002
Location: Netherlands
Quote:
Originally posted by awpagan
any analogue signal into a pc will have "pc" noise on it and needs compensation before converting to digital, but the idea works well for a cheap solution.
Hi Allan,

What do you mean by “PC noise”? My build in PCI card has actually less noise than my external USB soundcard. Measured spurs in loop-trough are below –120 dB and are below distortion components.

It is actually not an oscilloscope but my favourite program for doing audio analysis is ARTA. Very well written, easy to use, very complete and works with almost any soundcard. The free demo version has no limits except you cannot save to files. But you can however copy the results from your screen and save them through any image program

Cheers
  Reply With Quote
Old 8th March 2007, 10:52 PM   #14
cpemma is offline cpemma  United Kingdom
diyAudio Member
 
Join Date: Jul 2003
Location: S Yorkshire OK
Quote:
Originally posted by neutron7
...maybe a USB2 scope would be a cool project.
http://www.parallax.com/detail.asp?product_id=28014

Kit, $140

Quote:
Technical Specifications:

* 2 Channels
* 1 Ms/s Maximum Sample Rate with One Channel
* 500 Ks/s Sample Rate with Two Channels
* 20 Vpp Maximum Input for Channel 1 and Channel 2
* 200 kHz Bandwidth
* 8-Bit Vertical Resolution
* 1 M Ohm Input Impedance
* Trigger on Rising or Falling Edge at any Voltage
* Variable Trigger voltage on Channels 1 and 2
* Horizontal Trigger Position Settings at 10%, 50%, and 90%
* Auto and Normal Trigger Modes
* 3 probes
* USB 1.1 Support (no additional power supply required!)
Well, close.
  Reply With Quote
Old 14th June 2007, 02:49 PM   #15
lineup is offline lineup  Sweden
diyAudio Member
 
lineup's Avatar
 
Join Date: Dec 2005
Location: the north
Quote:
Originally posted by cpemma

Maybe this is something:
http://www.parallax.com/detail.asp?product_id=28014
Kit, $140, Technical Specifications:
* 2 Channels
* 1 Ms/s Maximum Sample Rate with One Channel
* 500 Ks/s Sample Rate with Two Channels
* 20 Vpp Maximum Input for Channel 1 and Channel 2
* 200 kHz Bandwidth
* 8-Bit Vertical Resolution

€120 ~ $140
.... yes, this is NOT too Expensive

What I would like is some good solution aimed for Audio Anlog signals.
Most products out there are, naturally, good for digital signals and for collecting data from sensors and monitoring data for longer time.

And the more close to Audio Hifi Quality we get( above average mp3 level )
the fewer good alternatives in an acceptable price range - for normal Diy Builders doing this for a hobby.

Looking for good free alternatives it most sure not the way.
But we may find some applications with good resolution in bits & time (at least 16bits ,48 kilo samples per second; preferably 24bits, 192 ksps)
at an acceptable proce budget, 'for normallly rich people'.

There are some really good soundcards for PC, out there!
With true high hifi.
Which ones of those, include a software for 'oscilloscope like measurings'?
... this will also be good for direct PC-Recordings of my old Vinyl Collections, for to burn (with little compression)
to CD or DVD

Regards lineup - has still got a cheap simple Creative Live soundcard
... but will possibly soon invest in a super audio card (with RIAA phono amplifier)


==================================================
Info, Wikipedia, Sampling (signal processing):
http://en.wikipedia.org/wiki/Samplin..._processing%29

Quote:

Transfer vinyl records to DVD-Audio discs

You have vinyl records collection and wonder how to give them a new life while preserving the warmth and stage presence that you appreciated with them. DVD-Audio is probably the best answer today because it is the only high-resolution standard that allows to burn an audio DVD disc on a standard DVD writer. Here is a practical example involving DVD-Audio Solo.

Transferring vinyl records to DVD-Audio discs will help you to :

*
Record at high resolution, such as 96kHz / 24 bit, and preserve most of the listening qualities that you liked in vinyl records. High-resolution audio offers a smooth and precise restitution of sound that is well beyond what you came to expect from CDs at 44kHz/16 bit. Listening to high-resolution is truly believing.
*
Convert them to a media that is more easily transportable and usable. We have many customers who converted their audio material to DVD-Audio discs to be able to listen to it in their cars equipped with DVD-Audio systems (Acura, Lexus). You will be able to enjoy your transferred vinyl in places without turntable.
*
Archive your vinyl records to a DVD media that is rated to last between 20 years and 100 years if handled with reasonable care. This protects your records against the slow degradation of time.
__________________
lineup
  Reply With Quote
Old 14th June 2007, 04:11 PM   #16
diyAudio Member
 
FastEddy's Avatar
 
Join Date: Jun 2006
Location: North Californie
http://www.parallax.com/detail.asp?product_id=28014 = " ... USB 1.1 Support (no additional power supply required!) ..." ...



You know that all that is really needed for an audio 'scope is a decent ADC / DAC and the software to display the incoming signal properly with "freeze frame" capability.
  Reply With Quote
Old 14th June 2007, 10:00 PM   #17
lineup is offline lineup  Sweden
diyAudio Member
 
lineup's Avatar
 
Join Date: Dec 2005
Location: the north
Quote:
Originally posted by FastEddy
http://www.parallax.com/detail.asp?product_id=28014 = " ... USB 1.1 Support (no additional power supply required!) ..." ...



You know that all that is really needed for an audio 'scope is a decent ADC / DAC and the software to display the incoming signal properly with "freeze frame" capability.

Simple as that.
Yes, why complicate things ( KISS = Keep It Simple Simple )

Now,
A good soundcard for Audio means to me:
- It have a good ADC/DAC onboard high resultion(24bits) and fast sampling
- It has preferably good input/output possibilities,
- digital SPDIF koaxial and TOSLINK is a minimum
- analog RCA Phono and stereo 3mm jack would be good
- maybe more professional analog inputs, like XLR etc.
- Good software support for the buyer .. upgrades, online downloads etc.

- There is no disadvantage (maybe is best!) if the soundcard is external
This would make connections easy, instead of back of PC.
Will maybe also exclude some disurbance from PC digital frequencies/powersupply junk.

lineup
__________________
lineup
  Reply With Quote
Old 15th June 2007, 12:40 AM   #18
diyAudio Member
 
FastEddy's Avatar
 
Join Date: Jun 2006
Location: North Californie
" ... A good soundcard for Audio means to me:
- It have a good ADC/DAC onboard high resultion(24bits) and fast sampling
- It has preferably good input/output possibilities,
- digital SPDIF koaxial and TOSLINK is a minimum
- analog RCA Phono and stereo 3mm jack would be good
- maybe more professional analog inputs, like XLR etc.
- Good software support for the buyer .. upgrades, online downloads etc.

- There is no disadvantage (maybe is best!) if the soundcard is external ..."

... likewise I'm sure ... and as long as the "wish list" is being writ large: make mine a FireWire 800 interface so's it can handle something bigger, badder and broaderband than USB2, Gigabit EtherNet or iSCSI / Fibrechannel / whathaveyou ...
  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
SoundEasy (& other windows audio software) via VMWare Fusion? hifiZen Everything Else 12 28th November 2008 08:04 PM
Windows software for schematics and PCB akis Parts 11 5th August 2008 07:12 AM
Great deal on Digital scope. Is this enough scope? hifimaker Pass Labs 1 1st May 2007 09:59 PM
A Software To Draw Blueprints Using Windows 98 OMNIFEX Multi-Way 1 10th August 2004 04:12 AM


New To Site? Need Help?

All times are GMT. The time now is 04:11 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