<br><div class="gmail_quote">On Thu, Nov 25, 2010 at 11:54 AM, Gustavo Santos <span dir="ltr"><<a href="mailto:gustavo@voip.ufrj.br">gustavo@voip.ufrj.br</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>I am studying about echo cancellation in asterisk and I want to use the numeric information from dahdi_monitor verbose for my research. Unfortunately, I couldn't find anything about the unit of measurement used in this tool. Which unit is used to measure the signal level?</div>
<br></blockquote><div><br></div><div>dahdi_monitor uses the sample values in L16 format.</div><div><br></div><div><meta charset="utf-8">They are in orders of magnitud of G.711. See tables 5 and 6 of the G.711 spec. In the end, the reference value is the dBm (google that).</div>
<div><br clear="all">Moises Silva<br>Senior Software Engineer<br>Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON L3R 9R6 Canada<br>t. 1 905 474 1990 x128 | e. <a href="mailto:moy@sangoma.com" target="_blank">moy@sangoma.com</a><br>
<br></div></div>