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STM32F4DISCOVERY USB Audio Device works but ...

Question asked by lu.hong on Mar 12, 2013
Latest reply on Mar 5, 2014 by jaekel.torsten
I have got the USB Audio Device example working on the stm32f4discovery board . When connected to my laptop via usb , the board can be recognized as an speaker. There is audio output from the headphone when play music on my laptop .However , the audio output is really funny , women sounds like man in the output of the board .
It seems that the I2S output clock frequency of the dicovery board is slightly higher than the audio sample rate of the laptop output . Is there a way to make the I2S output clock frequency the same with the audio sample rate of the laptop output?


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I have changed the I2S input clock from 3840000 to 86000000 by generating another system_stm32f4xx.c file.It is much better now , still not perfect.

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