---
name: "aldo"
section: "1"
platform: "linux"
package: "aldo"
version: "0.7.8-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/aldo"
---

# aldo(1)

A fully console morse code trainer written in ISO C++.

## NAME

aldo -  A fully console morse code trainer written in ISO C++.

## SYNOPSIS

**aldo**\

## DESCRIPTION

**Aldo** is developed from scratch in ISO C++ using GNU C++ Standard Library and libao (www.xiph.org/ao).\
 It is a morse code learning tool which provides four type of training methods:\

- **Blocks**

   Identify blocks of random characters played in morse code.

- **Koch**

   Two morse characters will be played at full speed (20wpm)\
    until you'll be able to identify at least 90 percent of them. \
    After that, one more character will be added, and so on.

- **File**

   Identify played characters generated from a file.

- **Callsign**

   Identify random callsigns played in morse code.\

## NOTES

The "Device" option under the keyer depends on the particular driver. The "default" setting picks the default sound device.  This option may be used to pick a different soundcard than the default one.

For alsa, it is "hw:\<card\>,\<device\>", where the card and device number are the particular hardware devices.  The default is generally "hw:0.0".  Generally 0 is the first card, 1 is the second, etc.  Some sound cards may have multiple output devices, the device picks the particular one.

For oss, sun, and aixs, it is the device name, like /dev/dsp.

For esd, it is the host name, like "whizbang.com:555".

It is not used on any other drivers.

## AUTHOR

This manual page was written by Giuseppe Martino \<denever@users.sf.net\>, for the Debian project (but may be used by others).