tree 2d069a85c6b8cdd4e7aa51a128653e97365ebb2d
parent 530ea6bbb3d5bec61379b14ad8b245add5a828e0
author Lun Dong <lundong@google.com> 1659052929 -0700
committer Lun Dong <lundong@google.com> 1659133244 -0700

Optimize dot product in audio MFCC pre-processing via RVV

Use RVV for the dot product operation in audio preprocessing. Yield ~30% of saving in term of # of instructions.

Results validated (within 1 code of difference due to quantization) and unit tests are passed.

Other optimization opportunies for audio preprocessing are not trivial nor straightforword, and will be put on hold due to priority shift.

Change-Id: Iea6f78bf488bacb8c617fbed0671dd607137e50f