Feature/custom paths (#165)

* add possibility to add own wake words and sounds
* improve documentation

---------

Co-authored-by: Florian Asche <git@florian-asche.de>

README.md

@@ -35,6 +35,8 @@ See [Linux-Voice-Assistant - Installation](docs/install.md).
 
 #### Parameter overview:
 
+💡 **Note:** There is a [environment variable](docs/install_application.md#environment-variables-reference) for each parameter if you use docker or systemd based setup.
+
 ``` sh
 usage: __main__.py [-h] [--name NAME] [--audio-input-device AUDIO_INPUT_DEVICE] [--list-input-devices] [--audio-input-block-size AUDIO_INPUT_BLOCK_SIZE] [--audio-output-device AUDIO_OUTPUT_DEVICE] [--list-output-devices] [--wake-word-dir WAKE_WORD_DIR]
                    [--wake-model WAKE_MODEL] [--stop-model STOP_MODEL] [--download-dir DOWNLOAD_DIR] [--refractory-seconds REFRACTORY_SECONDS] [--wakeup-sound WAKEUP_SOUND] [--timer-finished-sound TIMER_FINISHED_SOUND] [--processing-sound PROCESSING_SOUND]
@@ -44,9 +46,9 @@ usage: __main__.py [-h] [--name NAME] [--audio-input-device AUDIO_INPUT_DEVICE]
 | Parameter | Description | Default |
 |-----------|-------------|---------|
 | `--name` | Name of the voice assistant device (required) | Autogenerated (`lva-MAC-ADDRESS`) |
-| `--audio-input-device` | Soundcard name for input device | System default microphone |
+| `--audio-input-device` | Soundcard name for input device | Autodetected |
 | `--audio-input-block-size` | Audio input block size in samples | 1024 |
-| `--audio-output-device` | mpv name for output device | System default speaker |
+| `--audio-output-device` | mpv name for output device | Autodetected |
 | `--wake-word-dir` | Directory with wake word models (.tflite) and configs (.json) | `wakewords/` |
 | `--wake-model` | ID of active wake word model | `okay_nabu` |
 | `--stop-model` | ID of stop model | `stop` |