Get bad wav after analysis and synthesis back

[Yablon]

I get bad wav after the following operations:

./build/analysis test.wav test.f0 test.sp test.ap
./build/synthesis test.f0 test.sp test.ap debug.wav

Do you have any idea on how to fix this ?

The original test wav and debug wav are as follows wav.zip

Thank you !

[mmorise]

F0 estimation error is the main cause of degradation. The sound quality would improve by using Harvest() instead of Dio(). Harvest() generally provides a more reliable F0 compared with Dio().

[Yablon]

@mmorise Thank you for your kind reply. How about f0 estimated by REAPER or Praat ? Is that as reliable as Harvest() ?

[mmorise]

REAPER and Praat would work well when the noise in speech is small. The sound quality of synthesized speech generally depends on the voiced/unvoiced estimation in the F0 estimation process. To obtain good sound quality, Harvest is designed to reduce the error that the voiced section is wrongly identified as the unvoiced section.

[Yablon]

@mmorise Thank you !