| Electronics > Projects, Designs, and Technical Stuff |
| Anyone know of a low cost hardware MP3 decoder?? |
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| nali:
I know this is a dying breed but would like to find a decoder IC to let me play a stream from a MCU. This is a commercial product so needs to be "suitable for new designs". Interface can be SPI or I2S or even UART. VLSI have a series of devices but they are *expensive* and probably overkill as I just need a basic mono speech playback. Digikey shows a few other parts but I have the choice of "Discontinued", "Obsolete", or "Not for new designs" :( I do have a working solution playing WAV audio with a DAC but would like to move to MP3 if possible both to cut down file sizes, and the files originate as MP3 so I need to convert them (this is an online mobile device and the files are generated & downloaded on demand) |
| janoc:
The Ogg Vorbis page has a list of vendors making hardware decoders: https://wiki.xiph.org/index.php?title=Vorbis_Hardware&mobileaction=toggle_view_desktop It is Ogg format, not MP3, though some may decode MP3 too. Just keep in mind that you better budget big $$$ for the requisite patent licenses if you want to use MP3. MPEG consortium loves to sue companies for this. |
| nali:
That's interesting and food for thought! I hadn't really considered that MPEG licencing was such a thing nowadays especially considering that open source has cracked it (ffmpeg etc) and the proliferation of dirt cheap MP3 players you can buy for less than the cost of a pizza. That probably explains the cost of the VLSI product. Actually OGG is an option... the files are actually text-to-speech from Amazon Polly which supports both so I'll look through the vendors on the page you linked, so thanks for that. |
| greenpossum:
MP3 patents expired in 2017. |
| Someone:
--- Quote from: nali on May 08, 2020, 09:55:04 am ---That's interesting and food for thought! I hadn't really considered that MPEG licencing was such a thing nowadays especially considering that open source has cracked it (ffmpeg etc) and the proliferation of dirt cheap MP3 players you can buy for less than the cost of a pizza. --- End quote --- https://en.wikipedia.org/wiki/MP3#Licensing,_ownership,_and_legislation Open source solutions are available and legal. |
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