I don’t think she can hold much more Captain! She’s gonna blow!

It was doubtful from the start, but by now it’s becoming increasingly clear the AVR isn’t going to cut it when it comes to playing FLAC. It’s close, but even at 20 MHz it’s likely any peaks in bitrate will ruin the party. Since Friday I’m been throwing various MP3 and Ogg Vorbis files at the decoder while monitoring data requests.

While all files played fine some variable bitrate files occasionally showed peaks of over 60% at 256kbps. Now take a FLAC with 4 times the bitrate; 1000kbps (average!). In the current setup the AVR runs at 8MHz. Max speed available is 20MHz, only 2.5 times the current speed. Due to the nature of average bitrates, one can’t predict the exact numbers, but you’ll have a pretty good idea of how this is going to end. Maybe with some clever programming and optimisations it could be done… maybe.. could… Don’t know about you, but I don’t like those words. Would be nice to know where the limit lies in reality, so who knows, maybe I’ll give it a go one day.

Time for plan B. Next post, so check back soon.

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