{"id":1381,"date":"2012-04-11T17:15:58","date_gmt":"2012-04-11T17:15:58","guid":{"rendered":"http:\/\/192.168.16.235\/?page_id=1381"},"modified":"2020-01-09T12:27:08","modified_gmt":"2020-01-09T12:27:08","slug":"itu-g-729ab-vocoder","status":"publish","type":"page","link":"https:\/\/commetrex.com\/?page_id=1381","title":{"rendered":"ITU G.729a\/b Vocoder"},"content":{"rendered":"<p>[vc_row css_animation=&#8221;&#8221; row_type=&#8221;row&#8221; use_row_as_full_screen_section=&#8221;no&#8221; type=&#8221;grid&#8221; angled_section=&#8221;no&#8221; text_align=&#8221;left&#8221; background_image_as_pattern=&#8221;without_pattern&#8221; z_index=&#8221;&#8221; css=&#8221;.vc_custom_1578318404627{padding-top: 60px !important;padding-bottom: 0px !important;background-color: #f0f0f0 !important;}&#8221;][vc_column][vc_column_text]Commetrex\u2019 60095-2 speech codec is a resource- efficient implementation of the ITU G.729a\/b on the Texas Instruments TMS32C6000 family of DSPs. G.729a\/b is widely deployed in conferencing systems and PSTN-IP gateways where high-quality speech and low-bandwidth utilization are requirements.<\/p>\n<p>G.729 specifies a coding scheme that compresses 64-KBPS PCM speech to 8-KBPS using a conjugate structure algebraic-code- excited linear-prediction (CS-ACELP) algorithm. The coder is designed to process frames of 80 samples, or 10-milliseconds of speech data. A 5-millisecond \u201clook ahead\u201d is required, so the total delay is 15-milliseconds. G.729A is a reduced-complexity version of G.729. Since complexity reduction is due to internal computational simplifications, G.729 and G.729 Annex A are bit-by-bit interoperable. 60095-2 also includes the voice- activity detection and silence removal (VAD) and comfort-noise generation (CNG) specified in G.729 Annex B, hence G.729a\/b.<\/p>\n<p>60095-2A is Texas Instruments eXpress DSP Compliant. See (http:\/\/dspvillage.ti.com\/docs\/express_dsp\/expr essdsphome.jhtmll). The 60095-2B conforms to the MSP Consortium M.100 specification (http:\/\/www.msp.org), so it is compatible with any MSP-conforming media-processing system.[\/vc_column_text][\/vc_column][\/vc_row][vc_row css_animation=&#8221;&#8221; row_type=&#8221;row&#8221; use_row_as_full_screen_section=&#8221;no&#8221; type=&#8221;grid&#8221; angled_section=&#8221;no&#8221; text_align=&#8221;left&#8221; background_image_as_pattern=&#8221;without_pattern&#8221; z_index=&#8221;&#8221; css=&#8221;.vc_custom_1578318800266{padding-top: 60px !important;padding-bottom: 60px !important;background-color: #f0f0f0 !important;}&#8221;][vc_column width=&#8221;1\/2&#8243; el_class=&#8221;white-box&#8221;][vc_column_text]<\/p>\n<h2>Features<\/h2>\n<ul>\n<li>Low resource utilization<\/li>\n<li>C-callable interface<\/li>\n<li>Does not disable interrupts<\/li>\n<li>TMS320DSP Algorithm Standard compliant<\/li>\n<li>MSP Consortium M.100 compatible<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243; el_class=&#8221;white-box&#8221;][vc_column_text]<\/p>\n<h2>Benefits<\/h2>\n<ul>\n<li>High densities<\/li>\n<li>Low power<\/li>\n<li>Low implementation cost<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row css_animation=&#8221;&#8221; row_type=&#8221;row&#8221; use_row_as_full_screen_section=&#8221;no&#8221; type=&#8221;grid&#8221; angled_section=&#8221;no&#8221; text_align=&#8221;left&#8221; background_image_as_pattern=&#8221;without_pattern&#8221; z_index=&#8221;&#8221; css=&#8221;.vc_custom_1578569345116{padding-bottom: 60px !important;background-color: #f0f0f0 !important;}&#8221;][vc_column width=&#8221;1\/2&#8243; el_class=&#8221;white-box&#8221;][vc_column_text]<\/p>\n<h2>\u2018C62xx Resource Utilization<\/h2>\n<p>Encoder: 7.41 MCPS (with VAD)<br \/>\nDecoder: 2.12 MCPS (with CNG)<br \/>\nProgram Memory (full duplex): 74,656 bytes<br \/>\nTables: 8,928 bytes<br \/>\nPer-Instance Memory:<br \/>\nEncoder: 1984 bytes<br \/>\nDecoder: 1680 bytes[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243; el_class=&#8221;white-box&#8221;][vc_column_text]<\/p>\n<h2>License Options<\/h2>\n<ul>\n<li>Limited-Use Paid-Up Source Code<\/li>\n<li>Royalty with Reduced Up-Front<\/li>\n<li>Object Code with Runtime Licenses<\/li>\n<\/ul>\n<h2>Ordering Information<\/h2>\n<p>60095-2A G.729a\/b for the TI TMS320C6000 XDAIS package<br \/>\n60095-2B G.729a\/b for the MSP Consortium M.100 package[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[vc_row css_animation=&#8221;&#8221; row_type=&#8221;row&#8221; use_row_as_full_screen_section=&#8221;no&#8221; type=&#8221;grid&#8221; angled_section=&#8221;no&#8221; text_align=&#8221;left&#8221; background_image_as_pattern=&#8221;without_pattern&#8221; z_index=&#8221;&#8221; css=&#8221;.vc_custom_1578318404627{padding-top: 60px !important;padding-bottom: 0px !important;background-color: #f0f0f0 !important;}&#8221;][vc_column][vc_column_text]Commetrex\u2019 60095-2 speech codec is&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":98,"menu_order":219,"comment_status":"open","ping_status":"open","template":"template-products.php","meta":{"footnotes":""},"class_list":["post-1381","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/commetrex.com\/index.php?rest_route=\/wp\/v2\/pages\/1381","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/commetrex.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/commetrex.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/commetrex.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/commetrex.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1381"}],"version-history":[{"count":2,"href":"https:\/\/commetrex.com\/index.php?rest_route=\/wp\/v2\/pages\/1381\/revisions"}],"predecessor-version":[{"id":5221,"href":"https:\/\/commetrex.com\/index.php?rest_route=\/wp\/v2\/pages\/1381\/revisions\/5221"}],"up":[{"embeddable":true,"href":"https:\/\/commetrex.com\/index.php?rest_route=\/wp\/v2\/pages\/98"}],"wp:attachment":[{"href":"https:\/\/commetrex.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}