Asked

Im using the soundboard exb to play audio files but they are very faint. Is there a way to add an amplifier like on the ezb? I couldn't find a seperate audio out other than the speaker plug. The default voice from the IoTiny sound good but not my audio files which are mp3, i amplified the files in Audacity but they are still faint.
Related Hardware EZ-Robot EZ-B IoTiny
Related Controls
Output Audio from EZ-B
SoundBoard (EZB)
connect an external amplifier to the speaker output jack if you want a different speaker
there might be a direct breakout from the dac, I don’t know where it is. Can always check the schematic for the iotiny on GitHub https://github.com/synthiam/E-20_EZ-B_IoTiny
or someone who knows a better answer might chime in
you can use mp3 volumer to make mp3 files louder.
there are more of this kind of tools.mp3 normalizer for excample.
mp3 volumer
https://www.amazon.com/MakerHawk-Full-Range-Advertising-Separating-JST-PH2-0mm-2/dp/B07FTB281F/ref=pd_sbs_504_2/147-6918351-1521951?_encoding=UTF8&pd_rd_i=B07FTB281F&pd_rd_r=ac4af3f4-11ea-4e21-aa74-020409116ccd&pd_rd_w=TIlMg&pd_rd_wg=9HW28&pf_rd_p=52b7592c-2dc9-4ac6-84d4-4bda6360045e&pf_rd_r=X76N5JYB2WND3YM30NHH&psc=1&refRID=X76N5JYB2WND3YM30NHH
2 speakers that work well with the IO tiny - sound is much louder
thanks
Angelo
you can also use speakers from an old pc screen.
Here's an MP3 that I use to test with: Future_Chiptune.zip
There is no DAC breakout on the IoTiny but you can solder to the left side of C11 if you'd like to run the audio to your own amplified circuit, at this point I feel like it'd be easier to figure out your encoding issue but anyway here's the location if you're feeling adventurous:
Also, the ARC soundboard editor has a normalize feature built in. Use it to normalize your audio files in the soundboard after they’ve been imported
Edit-----Oh okay I see now that is only 5volt input not output only 3.3v.