.
Thread 4 (Thread 0x7f3beed00700 (LWP 2449)):
#0  0x00007f3bf7e43998 in ppoll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f3bf92db129 in pa_rtpoll_run () from /usr/lib/libpulsecore-1.0.so
No symbol table info available.
#2  0x00007f3befd2998f in ?? () from /usr/lib/pulse-1.0/modules/libalsa-util.so
No symbol table info available.
#3  0x00007f3bf908dc78 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.0.so
No symbol table info available.
#4  0x00007f3bf87a4efc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#5  0x00007f3bf7e4f89d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 0x7f3bef501700 (LWP 2448)):
#0  0x00007f3bf7e43998 in ppoll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f3bf92db129 in pa_rtpoll_run () from /usr/lib/libpulsecore-1.0.so
No symbol table info available.
#2  0x00007f3befd23dc2 in ?? () from /usr/lib/pulse-1.0/modules/libalsa-util.so
No symbol table info available.
#3  0x00007f3bf908dc78 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.0.so
No symbol table info available.
#4  0x00007f3bf87a4efc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#5  0x00007f3bf7e4f89d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f3befd02700 (LWP 2447)):
#0  0x00007f3bf72bf484 in ?? () from /usr/lib/x86_64-linux-gnu/libspeexdsp.so.1
No symbol table info available.
#1  0x00007f3bf72bf13a in ?? () from /usr/lib/x86_64-linux-gnu/libspeexdsp.so.1
No symbol table info available.
#2  0x00007f3bf72bffcb in speex_resampler_process_float () from /usr/lib/x86_64-linux-gnu/libspeexdsp.so.1
No symbol table info available.
#3  0x00007f3bf72c0490 in speex_resampler_process_interleaved_float () from /usr/lib/x86_64-linux-gnu/libspeexdsp.so.1
No symbol table info available.
#4  0x00007f3bf92d6ccf in ?? () from /usr/lib/libpulsecore-1.0.so
No symbol table info available.
#5  0x00007f3bf92da0b9 in pa_resampler_run () from /usr/lib/libpulsecore-1.0.so
No symbol table info available.
#6  0x00007f3bf92fd558 in pa_source_output_push () from /usr/lib/libpulsecore-1.0.so
No symbol table info available.
#7  0x00007f3bf9303bd1 in pa_source_post () from /usr/lib/libpulsecore-1.0.so
No symbol table info available.
#8  0x00007f3bf92eda0e in ?? () from /usr/lib/libpulsecore-1.0.so
No symbol table info available.
#9  0x00007f3bf92efa0e in pa_sink_render_into () from /usr/lib/libpulsecore-1.0.so
No symbol table info available.
#10 0x00007f3bf92eff29 in pa_sink_render_into_full () from /usr/lib/libpulsecore-1.0.so
No symbol table info available.
#11 0x00007f3befd24780 in ?? () from /usr/lib/pulse-1.0/modules/libalsa-util.so
No symbol table info available.
#12 0x00007f3bf908dc78 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.0.so
No symbol table info available.
#13 0x00007f3bf87a4efc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#14 0x00007f3bf7e4f89d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#15 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f3bf9723720 (LWP 2434)):
#0  0x00007f3bf907820a in pa_memblockq_peek () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.0.so
No symbol table info available.
#1  0x00007f3bf0e626b0 in ?? () from /usr/lib/pulse-1.0/modules/libprotocol-native.so
No symbol table info available.
#2  0x00007f3bf0e62ed5 in ?? () from /usr/lib/pulse-1.0/modules/libprotocol-native.so
No symbol table info available.
#3  0x00007f3bf930aadd in ?? () from /usr/lib/libpulsecore-1.0.so
No symbol table info available.
#4  0x00007f3bf8e2870e in pa_mainloop_dispatch () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
No symbol table info available.
#5  0x00007f3bf8e28ad5 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
No symbol table info available.
#6  0x00007f3bf8e28b80 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
No symbol table info available.
#7  0x00000000004068ab in main ()
No symbol table info available.