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The device plays back a multitude of audio file formats. On the commercial side sophisticated systems have been developed for blind people, such as the Daisy Player Victor Reader Stratus. This can be difficult to implement, especially in case of a larger set of books or music pieces. The different USB sticks or RFID cards would need to be identifiable by the blind person. For playing a new book, the "one button audio player" project ( ) requires insertion of a USB stick loaded with the new book, while in another project ( ) the already preloaded books are activated using specific RFID cards to be swiped over the RasPi. It is just transferred to a procedure outside of the player. If however the user wants to listen to multiple books or music files then the file selection issue persists. Single file audio players have been proposed as a simple solution. Why did we develop another mp3 player for blind people?Ĭonventional MP3 players usually require visual control for file selection and are therefore very difficult to operate by people with visual impairment. The RasPi resides in a small carton box with the FLIRC IR receiver attached to an extension cable and outside the box so that the IR control can interact with the IR receiver.
#Flirc usb ir remote upgrade
only one book loaded, only few command buttons activated) and upgrade once they feel more comfortable with the device. Note it may be appropriate for some people to start with a system of reduced functionality (e.g. I trained her for about one hour and she was very happy using the system the next day on her own. The system is now in use by my 87-year old aunt who recently got almost completely blind. The respective folder will store the most recent bookmark so that the user can jump to his previous listening position when re-entering the folder. A bookmark will be generated automatically when leaving the mp3 file. Feed-back on the current position (folder name) within the folder hierarchy is given by text to speech audio output. The user will select the mp3 files by navigating through the folder hierarchy.
#Flirc usb ir remote archive
The system gives access to the entire archive of mp3 files. The user will operate the system using the IR remote control. Power supply cable with a switch for easy brute reboot by the end user 2 USB 2.0 A male/female 0.5m extension cablesī.
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USB audio DAC (we used the one from Plugable with a 3.5mm output jacket)Ī. Alpine RUE-4202 remote control (others may be appropriate as well)įor improved audio output (to start with you can use the RasPi audio output) FLIRC for decoding IR remote control signalsī. Remote control (for testing any USB keyboard or keypad will do)Ī. Headphones, best as wireless, or an amplifier with loudspeakers Raspberry Pi (we used a model B+) with case and power supply No need for internet connection by the end user. Text to speech controlled navigation through hierarchical folder structure using an infrared remote control to play mp3 files. Raspberry Pi MP3 player (audio books and music) for visually impaired peopleīy Klaus & Andreas Noever Features summary