Improvements
Closed this issue · 3 comments
Kabron287 commented
Signal quality could be significally improved with the following minimal code modification:
- In main.cpp
.sample_rate = 64000, // this expands frequency range to 8 kHz - In I2SSampler.cpp
//// int16_t i2sData[1024];
int16_t i2sData[2048];
// read from i2s
//// i2s_read(sampler->m_i2sPort, i2sData, 2048, &bytesRead, 10);
i2s_read(sampler->m_i2sPort, i2sData, 4096, &bytesRead, 10);
//// for (int i = 0; i < bytesRead / 2; i++)
for (int i = 0; i < bytesRead / 2; i+=2)
Photos show aquired signal before and after modification.
cgreening commented
This is great - would you like to create a pull request and we can merge your changes in?
Kabron287 commented
@cgreening
Sorry, I'm not experienced enough in git.
I tried to fork, clone, fetch, checkout, ets., but faulty.
So, please do it yourself.