voice_processing: do not use GNU old-style field designators

Not using a GNU extension improves portability

Change-Id: I732753d2efa19efb48312664c7a2155f78ceee35
Visualizer: do not use GNU old-style field designators

Avoiding the use of GCC extensions improves code
portability

Change-Id: I53f577c47d9c90710f086ad707e53e22d4416a1e
Signed-off-by: DHOMD <DHO@dho.im>