Identifying segments when a person is speaking?

Question

Does anyone know a (preferably C# .Net) library that would allow me to locate, in voice recordings, those segments in which a specific person is speaking?

Answer 1

While the above answer is accurate, I have an update to the installation issue occured to me on Linux while installing SHoUT. undefined reference to pthread_join whose solution I found was to open configure-make.sh from SHoUT installation zip and modify the line

CXXFLAGS="-O3 -funroll-loops -mfpmath=sse -msse -msse2" LDFLAGS="-lpthread" ../configure

to

CXXFLAGS="-O3 -funroll-loops -mfpmath=sse -msse -msse2" LDFLAGS="-pthread" ../configure

NOTE the lpthread to changed to pthread on Linux Systems.

OS: Linux Mint 18 where SHoUT version: release-2010-version-0-3