[Discuss-gnuradio] Audio-file transmit with CODEC2 (based on Loopback-Example)

[Timur Karychev]

Hi everyone.
I'm trying to implement Audio-file transmit with CODEC2 Encoding/Decoding scheme.
For this purpose I redesigned the loopback-example from Martin Brown. Rx/Tx files in the attachment.

The audio is transmitting, but very abruptly, choppy.

What could cause  this problem? Where should I look for a solution?

I tried to add synchronization tools ( FLL Fullband Edge, Costas Loop, MM Clock Recovery) but it had no effect.
I edited gr-audio-alsa.conf in order to tune audio-output. It did not help me either.

Any help would be greatly appreciated, thanks in advance.

Timur

OFDM_CODEC2_rx.grc
Description: application/gnuradio-grc

OFDM_CODEC2_rx.grc.png
Description: PNG image

OFDM_CODEC2_tx.grc
Description: application/gnuradio-grc

OFDM_CODEC2_tx.grc.png
Description: PNG image