On Sat, Oct 24, 2020 at 02:41:25PM +0800, Jiaxin Yu wrote:
We can choose to drop away any length of data from the beginning according to project needs. Some projects don't want to throw away any data, because they want to use recorded data to do echo cancellation, so they have to make sure that they are aligned with the reference data as much as possible. Or there are other algorithms in the upper layer to eliminate this noise. Or some projects want to eliminate this noise form the kernel layer. However, the minimum recommended value is 50ms to skip pop noise.
This seems like something that would apply equally to all DMICs so should be done at a more general level rather than in this specific driver, for example it could be done in the DMIC driver.