<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">-v is a multiplier. So, -v 0.2 reduces gain to 20% of original.<div><br></div><div>It is typical to supply professionally recorded audio with peaks boosted to 0DBFS. That is probably how the prompts were originally supplied. It makes since that -v 0.2 would reduce the max power to 20%, around -15 to -16 DBFS.<br><div><br></div><div>The FS build process downloads pre-processed versions of these files. Is there somewhere online that I can find the source recordings+script that produces the pre-processed files that are downloaded by the build process?</div><div><br></div><div>Bryan<br><div><br></div><div><div><div>On Jun 27, 2011, at 7:32 PM, Michael Collins wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><br><br><div class="gmail_quote">On Mon, Jun 27, 2011 at 3:07 PM, Anthony Minessale <span dir="ltr"><<a href="mailto:anthony.minessale@gmail.com">anthony.minessale@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; position: static; z-index: auto; ">
Have a look at the 48khz versions of the files, those should be the originals.<br>
Someone runs a batch sox command on them to get them to the other levels.<br></blockquote><br></div>Just for the record, the sox command used to normalize the sounds is:<br>sox -v 0.2 $file_in -r $rate -c 1 $file_out<br>
<br>The -v format is the "volume" format and if I read the sox man page correctly it means a "linear amplitude adjustment". What I can't tell from the man page is whether .2 means "reduce by 20%" or "reduce to 20%" or something else. In any case, like Tony says, we are not picky about this as long as it's not pointlessly loud.<br>
<br>-MC <br>
_______________________________________________<br>Join us at ClueCon 2011, Aug 9-11, Chicago<br><a href="http://www.cluecon.com">http://www.cluecon.com</a> 877-7-4ACLUE<br><br>FreeSWITCH-users mailing list<br><a href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a><br>http://lists.freeswitch.org/mailman/listinfo/freeswitch-users<br>UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users<br>http://www.freeswitch.org<br></blockquote></div><br></div></div></div></body></html>