resample streaming

[mipac]

Hi, Could you give me an example showing resampling a stream of samples?

best regards,

[dancazarin]

Hi, Here is an example of resampling. It processes audio by blocks in cycle. Cycle body is what should be done in your block processing function. https://github.com/kfrlib/kfr/blob/master/tools/sample_rate_converter.cpp

Because with resampling the sizes of input and output buffers differ, there are two different approaches:

• Fixed size of input block, size of output block is determined from the size of input block.
• Fixed size of output block, size of input block is determined from the size of output block.

Both are possible with KFR using output_size_for_input and input_size_for_output functions.

Note that resampler has delay, get_fractional_delay function returns it (may be fractional).

[mipac]

I haven't seen that example... sorry for noise...

It's difficult to understand the use of univector, for example the use of .ref() after the slice() etc... Do you have pointer to a tutorial about that fundamentals ?

best regards

[dancazarin]

ref() converts univector<>&& returned by slice() to univector<>& required by resampler<>::process. It's just requirement of C++.