WAV audio player

XCore Project reviews, ideas, videos and proposals.
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leon_heller
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Post by leon_heller »

I unzipped it and then imported it. I'll try importing the zip file as you did.

That worked OK - I cleaned the project and rebuilt it without any problems. I can't see why I was getting those errors previously, though.

Thanks for the help. I'll try it with my SD card tomorrow.

Leon


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Berni
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Post by Berni »

Glad we got that sorted.

So for the rest of you, don't extract these archived projects use the method described in my last comment!
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jason
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Post by jason »

I must say, I love the video, it is descriptive and fun to watch. Great effort!
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lilltroll
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Post by lilltroll »

I tried the C64 - software synth example, and thought about if the largest error came from jitter in the time-base or ripple in the rail. Check the rail with a Scope and you see!

I guess that you could improve the SNR+D alot in the Audio, just by buffering the PWM signal - feeding the buffer with it´s own low noise LDO. (16 bit ~ 96 dB ~ (1 / 100 000) V => 30uV maximum ripple on a 3.3 V rail )
Probably not the most confused programmer anymore on the XCORE forum.
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Berni
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Post by Berni »

I actually imitated the PWM code from the C64 project.

Well i am suspecting both. Altho i wont work on improving this method as it was never meant to be a way to get great quality audio from it. I need to etch me breakout board for a proper audio DAC chip that will get me audio up to 192Khz 24bit if i need it, as a bonus it also includes a audio ADC in it so i can input audio to my XC-2 then too. So i can try doing some real time audio effects (hmm an XC-2 autotune would be awsome!)
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