Subject: speech degradation in a GSM network transmission From: "Faten B.A." <fatenpesq@xxxxxxxx> Date: Thu, 6 Mar 2008 00:48:19 +0100 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>------=_Part_27879_22253927.1204760899663 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi list, I want to introduce some artificial degradation to a speech signal in order to simulate speech degradation in a GSM network transmission. The addition of a background noise seems to be simple but I don't know which type or noise distribution I have to use. I want also introduce frequency degradation and I have no idea about the way this must be done. Can anyone advice me or send me some documentations about this topic? Best Regards. F.B.A. ------=_Part_27879_22253927.1204760899663 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline <div> <p class="MsoNormal" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt"><span lang="EN-GB" style="FONT-FAMILY: Arial; mso-ansi-language: EN-GB">Hi list,</span></p> <p class="MsoNormal" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt"><span lang="EN-GB" style="FONT-FAMILY: Arial; mso-ansi-language: EN-GB"> </span></p> <p class="MsoNormal" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt"><span lang="EN-GB" style="FONT-FAMILY: Arial; mso-ansi-language: EN-GB">I want to introduce some artificial degradation to a speech signal in order to simulate speech degradation in a GSM network transmission.</span></p> <p class="MsoNormal" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt"><span lang="EN-GB" style="FONT-FAMILY: Arial; mso-ansi-language: EN-GB">The addition of a background noise seems to be simple but I don't know which type or noise distribution I have to use.</span></p> <p class="MsoNormal" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt"><span lang="EN-GB" style="FONT-FAMILY: Arial; mso-ansi-language: EN-GB">I want also introduce frequency degradation and I have no idea about the way this must be done.</span></p> <p class="MsoNormal" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt"><span lang="EN-GB" style="FONT-FAMILY: Arial; mso-ansi-language: EN-GB">Can anyone advice me or send me some documentations about this topic?</span></p> <p class="MsoNormal" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt"><span lang="EN-GB" style="FONT-FAMILY: Arial; mso-ansi-language: EN-GB"> </span></p> <p class="MsoNormal" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt"><span lang="EN-GB" style="FONT-FAMILY: Arial; mso-ansi-language: EN-GB">Best Regards.</span></p> <p class="MsoNormal" style="BACKGROUND: white; MARGIN: 0cm 0cm 0pt"><span lang="EN-GB" style="FONT-FAMILY: Arial; mso-ansi-language: EN-GB">F.B.A.</span></p></div> ------=_Part_27879_22253927.1204760899663--