| 1. the pulseaudio development library to enable pulseaudio output; | 1. the pulseaudio development library to enable pulseaudio output; | ||||
| 2. the portaudio development library to enable portaudio output; | 2. the portaudio development library to enable portaudio output; | ||||
| 3. the sonic development library to enable sonic audio speed up support; | |||||
| 3. the [sonic](https://github.com/waywardgeek/sonic) development library to | |||||
| enable sonic audio speed up support; | |||||
| 4. the `ronn` man-page markdown processor to build the man pages. | 4. the `ronn` man-page markdown processor to build the man pages. | ||||
| To build the documentation, you need: | To build the documentation, you need: |