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Advices on creating a arduino live radio

Former Member

Hi guys,

 

I am having a problem on getting information on creating my own personal arduino live radio. After searching online for some time, i see that most of the arduino radio uses the sparksfun mp3 player. My lecturer has told me that it is possible not to used the sparksfun mp3 player and just used the speaker / arduino uno / arduino ethernet shield to get the radio to be played. As my lecturer will be away for some time, i do appreciate any help or guidelines i can follow. Thanks.

 

For example in the picture below i need to go to that link and take the radio live broadcast and play it through my speaker.

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  • Hi Cho Zi,

     

    The Arduino Uno does not have enough processing capability to decode MP3 streams as far as I'm aware. Live radio may use some other codec, in which case there is a slim possibility of decoding it, but according to the Wikipedia page for it (i.e. Internet Radio page), "Streaming audio formats include MP3, Ogg Vorbis, Windows Media Audio, RealAudio, and HE-AAC (or aacPlus)". I'm not sure which (if any) are possible with such limited processing and RAM in an Arduino. This is why most projects likely use some external decoder chip, such as this one.

    So, possibly your lecturer intended you to find an alternate chip rather than the Sparkfun one, but I don't think he/she expected you to perform the decode on the Arduino Uno itself.

  • in reply to shabaz

    Hi shabaz,

     

    I would just like to clarify, and please do correct me if i am wrong. We are able to take information from the internet for example the weather and display it onto the LCD display. So i would like to do so now by taking the radio live streaming music and play it through the speaker, so what your saying is that the arduino uno / Ethernet shield is not able to do so on it's on and it most likely requires an alternative chip?

  • in reply to Former Member

    Hi Cho Zi,

     

    That is correct, weather is feasible (just about) by throwing away a lot of the retrieved web page and extracting out just the text that you are interested in.

    But, MP3 decode requires a lot more processing power, and memory than the Arduino Uno has as far as I am aware.

    A feasible solution would be:

    Ethernet Shield-->Arduino-->Decoder Chip-->Amplifier/Speaker

    This way, the Arduino would retrieve the content and rapidly send it to the decoder chip.

     

    I could be wrong, but I'm 90% sure MP3 (and similar codecs) decode would require more processing power and memory than the Uno has.

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  • in reply to Former Member

    Hi Cho Zi,

     

    That is correct, weather is feasible (just about) by throwing away a lot of the retrieved web page and extracting out just the text that you are interested in.

    But, MP3 decode requires a lot more processing power, and memory than the Arduino Uno has as far as I am aware.

    A feasible solution would be:

    Ethernet Shield-->Arduino-->Decoder Chip-->Amplifier/Speaker

    This way, the Arduino would retrieve the content and rapidly send it to the decoder chip.

     

    I could be wrong, but I'm 90% sure MP3 (and similar codecs) decode would require more processing power and memory than the Uno has.

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