Projects / AudioScope

AudioScope

AudioScope is a text mode audio oscilloscope that captures sounds using DEMO, SOX, or DSP (/dev/dsp}. It is primarily a learning tool for kids. The script includes code and circuit diagrams for calibrating the horizontal and vertical axes. It features a demo mode with no dependences that samples /dev/urandom.

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Release Notes: A semi-automatic Arduino detection command ARDDET<CR>. To see Arduino working after programming it, just temporarily wire a 10K pot' between +5V and Gnd with the wiper connected to ANALOG 0. An 8 second pure sine wave wave file for multi-platform use. Another command, BURST<CR>, plays the above wave file using "afplay" for OS X or "aplay" for Linux. DC now allows REAL DC into the scope if Arduino is detected. If not, it defaults to a DEMO mode and samples /dev/urandom. Calibration is yet to be done.

  •  18 Jan 2014 18:46

    Release Notes: This release removes the "clear" command. The function "clrscn()" replaces it. It removes the "sleep" command. The function "delay()" replaces it, with keyboard override. These functions use builtins and terminal extensions only. This release adds a LOAD command to load a capture into the _buffer_ and display it. On program startup, a pseudo-capture file is generated as "0000000000.BIN" in the /tmp/ directory to test the LOAD command. If you enter a wrong filename, it does nothing except return you to the Scope's COMMAND window.

    Release Notes: This is the first Freecode announcement.

    RSS Recent comments

    16 Mar 2014 09:46 Avatar wisecracker

    Don't know what happened but trying again.
    Lots of changes here for version 0.22.10...

    A semi-automatic Arduino detection command:- ARDDET
    This requires a small amount of user input. Thanks Corona688 and Don...
    The ARDDET section also creates a .PDE file to program the Arduino for a single ADC only plays the above wave file using "afplay" for OSX or "aplay" for Linux.

    DC now allows REAL DC into the scope IF Arduino is detected.
    IF NOT then it defaults to a DEMO mode and samples /dev/urandom.
    It displays itself inside the YELLOW section of the COMMAND window for a short period.

    Another command:- ALTDC is a placeholder for a sound card DC input under development.

    Other minor changes too...

    16 Mar 2014 09:41 Avatar wisecracker

    Release notes are limited so here is a better run down...
    Lots of changes here for version 0.22.10...

    A semi-automatic Arduino detection command:- ARDDET
    This requires a small amount of user input.
    The ARDDET section also creates a .PDE file to program the Arduino for a single ADC only plays the above wave file using "afplay" for OSX or "aplay" for Linux.

    DC now allows REAL DC into the scope IF Arduino is detected.
    IF NOT then it defaults to a DEMO mode and samples /dev/urandom.
    It displays itself inside the YELLOW section of the COMMAND window for a short period.

    Another command:- ALTDC is a placeholder for a sound card DC input under development.

    Other minor changes too...

    Screenshot

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