1 Introduction
2 References
3 Effect of talker echo
4
Effect of talker echo on overall speech transmission quality
5
Active echo control devices
6 Rules for connections with echo
control devices
Appendix I – Assessment of talker echo
effects
Appendix II –
Relation between echo disturbances under single talk and double talk conditions
(evaluated for one-way transmission time of 100 ms)
II.1 Introduction
II.2 Echo assessment for the test
conditions according to ITU-T Rec. G.131
II.3 Correlation between the results
under single and double talk conditions
Appendix III –
Combined effects of talker echo in the presence of absolute delay