Author: Christian Zeitnitz
The PC based Soundcard Oscilloscope receives its data from the Soundcard with 44.1kHz and 16 Bit resolution. The data source can be selected in the Windows mixer (Microphone, Line-In or Wave). The frequency range depends on the sound card, but 20-20000Hz should be possible with all modern cards. The low frequency end is limited by the AC coupling of the line-in signal. Be aware, that most microphone inputs are only mono.
The oscilloscope contains in addition a signal generator for 2 channels for sine, square, triangular, sawtooth wave forms and different noise spectra in the frequency range from 0 to 20kHz. The signal can be defined by a mathematical formula as well. The signals are available at the speaker output of the sound card. These can be fed back to the oscillocope in order to generate Lissajous figures in the x-y mode.
Download the latest version: scope V1.47
Obtain a commercial license here
Interested in a customized version?
Support the development of this program by obtaining a private donation license
The program has been written in LabView (™ by National Instruments). For the actual Sound I/O part the WaveIO package by the same author has been used.
The signals for the oscilloscope can be internal to the computer (MP3 player, function generator etc.) or from external sources (line-in, microphone). For external sources care has to be taken, not to exceed the voltage range of the inputs. The range is usually only ±0.7V !! If higher voltage need to be analyzed, a voltage divider has to be used. Additional protection diodes are recommended in order to avoid any damage to the sound card and to the computer.
This program will run on Windows 2000/XP/Vista/7/8/10 (32bit and 64bit) computers with a sound card. It will not install on older versions of Windows. The speed requirements are not very hard. A 1GHz machine is suffient. On slower CPUs the load on the system might lead to reduced responsiveness of the system.
This Software and all previous versions are NO Freeware!
If you like to support the further development of this program please obtain a private license by following this link
Commercial usage: In order to obtain a commercial license follow this linkAll right reserved.
Instructions: The program comes as a self-extracting archive and will start the installation automatically. After the installation start the scope from the entry in the program menu. Enjoy !
Please uninstall any previous version of the scope software before installing this version
Due to a bug in the re-samlping of data (thanks Helio), all versions prior to 1.24 should be updated!
The program requires a correctly installed and configured soundcard on your Windows computer. In case of problems consult the manual and the frequently asked question.
If you still have a software related problem send mail to C.Zeitnitz