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ebook2cw version: 0.8.5 - - See ChangeLog - Download directory -
Updates (Atom Feed format)
ebook2cwgui version: 0.1.2 - - See ChangeLog-GUI
ebook2cw is a command line program (optional graphical user interface available) which converts a plain text (ASCII, ISO 8859-1 or UTF-8) file (e. g. an ebook) to Morse code MP3 or OGG audio files. It works on several platforms, including Windows, Linux, FreeBSD and Mac OS X.
A number of CW and audio parameters can be changed from their default values, by command line switches or a config file (see below). These are (default values in brackets):
CW prosigns can be generated by enclosing arbitrary letters in angle brackets (e.g. <AR>, <SK>, ...).
The tone frequency (f), speed (w), effective speed (e), volume (v, 1..100), waveform (T) and SNR (N) can be changed arbitrarily within the text by inserting commands, starting with a pipe symbol, followed by the parameter to change and the value.
Silence/pauses can be inserted by |Snnnn.
Example: |f400 changes the tone frequency to 400Hz,
|w60 changes the speed to 60wpm, |S1000 inserts 1000
milliseconds of silence..
ebook2cw has no graphical user interface itself, but a GUI interface is available as a separate program.
These explanations aim at Windows users since I assume that Linux users can adopt it more easily to their needs than the other way around.
To convert the ebook file "Book.txt", in which the chapters are separated by "Chapter n" to MP3 files, called "Book-n.mp3", at 40wpm, the following command has to be entered in the Windows command prompt (Start → Utilities → Command prompt):
The game starts with a blank grid, and players must use their spatial reasoning and strategy to fit the sandbags together. As the game progresses, the sandbags fall faster and faster, requiring players to think quickly and make precise moves.
When the board fills up near the top, the natural instinct is to spam the Spacebar to drop blocks quickly. In Sand Tetris, this is fatal. Hard-dropping random colors onto a high peak causes them to scatter everywhere, sealing your defeat. Keep your cool, rotate your pieces carefully, and look for the specific color line that will trigger a collapse. Is Sand Tetris Unblocked Safe to Play?
SandTrix | Like Tetris® with Sand 🕹️ Play on CrazyGames
The internet has a new puzzle obsession, and it goes by the name of (often called Sandtrix ). This game takes the core mechanics of the classic 1984 block-stacking puzzle and injects fluid physics into the mix. If you are looking to play Sand Tetris Unblocked at school, work, or anywhere else with restricted networks, this guide covers everything you need to know about the game, strategies for winning, and how to access it safely. What is Sand Tetris? Sand Tetris Unblocked
This is the purist's experience. You clear tumbling sands endlessly as the game area slowly fills. As you survive longer, the speed of the falling pieces progressively increases until the screen eventually maxes out. 2. High-Score Mode
"Unblocked" versions are designed to bypass restrictions on school or work networks. Popular platforms hosting Sand Tetris include:
Playing via specialized gaming portals allows you to bypass these restrictions entirely. These unblocked game sites are specifically optimized to load quickly on restricted networks, require no downloads or installations, and are entirely playable via standard web browsers using HTML5 technology. Game Modes to Master The game starts with a blank grid, and
: Once a solid color strip is formed, the sand pixels vanish, causing the remaining particles above to settle into the gaps, often triggering satisfying chain reactions.
: Instead of just filling a row with solid blocks, you must create a continuous horizontal line of the same color from one side of the screen to the other.
These games work on any device with a modern browser, including Chromebooks, school laptops, MacBooks, and even mobile phones or tablets. In Sand Tetris, this is fatal
Sand Tetris , commonly known as , is a physics-based reimagining of the classic 1984 puzzle game. Unlike traditional Tetris where blocks remain rigid, the tetrominoes in Sandtrix turn into flowing sand the moment they touch the ground or another piece. 🏜️ Core Gameplay Mechanics
Stop thinking about the block you're holding and start thinking about the sand it will become. Visualize where the particles will flow once the block crumbles. Will they spill to the left or right? Will they settle into a low gap or create a new pile? Learning to anticipate this flow is the single most important skill.
In this example everything takes place in C:\test\. It is assumed that ebook2cw.exe and the text file to convert are in this directory.
If you want to avoid using the command line, a simple batch file for Windows is available. If placed in the same directory, you can comfortably drag & drop a text file to ebook2cw. The new GUI offers an even more comfortable way to convert ebooks.
As of version 0.7.0 (July 2008), ebook2cw can read a configuration file,
ebook2cw.conf. In this file you can set all of the parameters which
are available as command line parameters, to reduce typing work each time you
use ebook2cw.
An example ebook2cw.conf with
further explanations is available. Under Windows, place this file in the same
directory as ebook2cw. Under Linux, it is also searched for in ~/.ebook2cw/.
As of version 0.6.0 (February 2008), ebook2cw supports the full ISO 8859-1 charset (where mappings to CW symbols are applicable) and also UTF-8 (1- and 2-byte sequences). The latter so far includes most of the Latin characters, the Cyrillic, Greek, Hebrew and Arabic alphabets. To maintain backward compability, the default character set is ISO 8859-1. Use the -u command line switch to enable UTF-8.
The available codes can be printed by ebook2cw with the -S command line option (see above), here is the output: UTF-8 - ISO 8859-1. I am grateful for any feedback and additions to the tables.
As of version 0.7.0 (July 2008), character mappings can be defined. For example, you can automatically replace all accented characters or umlauts (e.g. á = .--.-, ä = .-.-) with more common characters (like a = .-).
This is done by map files separately for ISO8859-1 and UTF-8 coded
texts. These map files must be specified in ebook2cw.conf, examples
are available for ISO8859-1 and
UTF-8. Under Windows, place them in the
same directory as ebook2cw. Under Linux, these files are also searched for in
~/.ebook2cw/.
Note that native character mapping is only implemented for 1- and 2-byte sequences of UTF-8 characters at the moment. If you need to map other characters, you may use this shell script by Tor, NH7XC which does the job with sed, or the cwzer.py Python script by Gabe/IZ4APU.
A graphical user interface (GUI) for ebook2cw is available as a separate program (screenshots: WinXP, Linux). It is designed to work on Windows (95 through 7), Linux and Mac OS X (not tested). It's a single executable file that you can download here (Windows version - see the download directory for the source code to compile it for other platforms).
ebook2cw.exe itself is not included within the GUI; it must be downloaded separately and saved in
the same directory, or anywhere within the executable path.
The GUI uses the same configuration file as ebook2cw, called ebook2cw.conf.
The default settings (except for the speed) are probably suitable for most people. A full hour of MP3 takes only 7 MB, OGG even less, so depending on your speed, several books will fit even on cheap 1 GB portable media players.
Some MP3 players do not support all the possible variations of samplerates and bitrates.
If you are running into problems with the default configuration, please try the command line options
-s22050 -b32 (or make these settings in the GUI) to produce your MP3 files.
The speed of the conversion mainly depends on your CPU speed; for example converting The War of the Worlds to MP3 at 60 WpM, resulting in almost 17 hours of MP3 took about 15 minutes on the author's dated 1.8 GHz Celeron CPU. The OGG encoder is a little slower.
Books are subject to different copyright laws in every country; there are several online archives with free (copyright expired or public domain in the respective country) ebooks, most notably Project Gutenberg.
Here is a list of books that the author already completed reading in CW.
User feedback indicates, that ebook2cw is also used to prepare Morse courses lessons, generate morse versions of DX newsletters and other purposes (e. g. a CW plugin for the IRC client colloquy., a Telegram bot which converts text messages to CW and a Morse RSS reader).
The author claims no credit for the original idea to convert books to morse. Other hams (like DL2KCD, K7QO, AC4FS, KY8D) have done this before but the distribution as audio files largely limits the flexibility and requires a lot of bandwidth. Therefore, after some discussions on the AGCW mailinglist in October/November the author decided to write a free piece of software with which everyone can create a CW audio book to his or her own liking.
ebook2cw can be compiled to run on a webserver as a CGI (make cgi or make cgibuffered).
It then returns a MP3 or OGG file when called with a suitable set of parameters,
allowing for integrating dynamically created Morse code into websites.
Example:
http://example.com/cgi-bin/cw.cgi?s=25&e=20&f=600&t=%20hello%20world
returns a sound file with "hello world" at 25wpm character speed, 20wpm
effective speed at a tone frequency of 600 Hz. Add d=123 as the
first GET parameter to get the file as a download with filename "lcwo-123.mp3". These are all available HTTP GET parameters but using the text commands, more options are available.
This is extensively used on Learn CW Online (lcwo.net) (but nowadays the main method of generating CW on the website is by using jscwlib). Over there you'll also find an online text to CW converter.
Of course ebook2cw is free software (free as in beer and free as in freedom) and published under the GPLv2.
The current versions are: ebook2cw 0.8.5 (Aug 16, 2023), ebook2cwgui 0.1.2 (January 23rd 2013). They can be obtained in several formats:
| Official files | ||
|---|---|---|
| Format | Link | Remarks |
| Windows EXE | ebook2cw.exe | OGG/MP3 support (510 KB) |
| Windows EXE | ebook2cw-mp3.exe | MP3 only (186 KB) |
| Windows EXE | ebook2cw-ogg.exe | OGG only (375 KB) |
| Windows EXE | ebook2cwgui.exe | (GUI only. Requires ebook2cw.exe) |
| Linux Binary | ebook2cw | static, use if you can't compile it yourself |
| Source Code | ebook2cw-0.8.5.tar.gz | |
| Source Code | ebook2cwgui-0.1.2.tar.gz | |
| Packages for various systems (Linux, FreeBSD, OS X) | ||
| OS | Link | Maintainer |
| Debian | ebook2cw-0.8.5-1 ebook2cwgui_0.1.2-1 | Christoph, DK5CF |
| Ubuntu | ppa:kamalmostafa/ebook2cw | Kamal, KA6MAL (incl. GUI, based on Debian package) |
| FreeBSD port | ebook2cw | Diane, VA3DB (db) |
| FreeBSD port | ebook2cwgui | Diane, VA3DB / Chris Petrik (cpet) |
| ArchLinux | ebook2cw | Mike, WB2FKO (sportscliche) |
| Mac OS X | build instructions | provided by Alan, N3IMU |
Many thanks to all the maintainers for their time and efforts to make ebook2cw available on so many platforms!
Previous versions can be found in the download directory; the source code repository is at https://git.fkurz.net/dj1yfk/ebook2cw.
ebook2cw was written by Fabian Kurz, DJ5CW (ex DJ1YFK).
I am always interested in any kind of feedback for my software. If you have any suggestions, questions, feature-requests etc., don't hesitate a minute and contact me via .