{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,26]],"date-time":"2025-02-26T05:33:00Z","timestamp":1740547980945,"version":"3.38.0"},"reference-count":10,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2010,9,7]],"date-time":"2010-09-07T00:00:00Z","timestamp":1283817600000},"content-version":"vor","delay-in-days":5850,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Trans Emerging Tel Tech"],"published-print":{"date-parts":[[1994,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>This paper discusses two speech\u2010coding algorithms at around 8 kbit\/s. These algorithms both use pre\u2010selection in the codebook search and training for the conjugate structured random codebook. One has short\u2010delay time that can dispense with echo\u2010control equipment. This algorithm is robust against channel errors by using LPC analysis separated from pitch excitation, although LPC parameters are derived from the locally decoded signal. The other algorithm has medium\u2010delay time and meets all the requirements of the ITU\u2010T (formerly CCITT) 8 kbit\/s speech coding standard. The performance of these codecs is evaluated using signal to noise ratio (<jats:italic>SNR<\/jats:italic>), pair comparison tests with a modulated noise reference unit (MNRU), and Mean Opinion Score (MOS). The major applications of these codecs are personal handy phone systems and FPLMTS.<\/jats:p>","DOI":"10.1002\/ett.4460050509","type":"journal-article","created":{"date-parts":[[2010,9,14]],"date-time":"2010-09-14T19:11:22Z","timestamp":1284491482000},"page":"583-590","source":"Crossref","is-referenced-by-count":1,"title":["8 kbit\/s short and medium delay speech codecs based on CELP coding"],"prefix":"10.1002","volume":"5","author":[{"given":"Shinji","family":"Hayashi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akitoshi","family":"Kataoka","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takehiro","family":"Moriya","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2010,9,7]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"crossref","unstructured":"I.GersonM.Jasiuk:Vector Sum Excited Linear Prediction (VSELP) Speech Coding at 8 KBS. Proc. ICASSP 1990 1990 p.461\u2013464.","DOI":"10.1109\/ICASSP.1990.115749"},{"key":"e_1_2_1_3_2","doi-asserted-by":"crossref","unstructured":"J. C.Hardwic J. S.Lim:The application of the IMBE speech coder to mobile communications. Proc. ICASSP 1991 1991 p.249\u2013252.","DOI":"10.1109\/ICASSP.1991.150324"},{"key":"e_1_2_1_4_2","doi-asserted-by":"crossref","unstructured":"J. H.Chen R. V.Cox:A fixed\u2010point 16 kb\/s LD\u2010CELP Algorithm and Its Real\u2010Time Implementation. Proc. ICASSP 1991 1991 p.21\u201324.","DOI":"10.1109\/ICASSP.1991.150269"},{"key":"e_1_2_1_5_2","doi-asserted-by":"crossref","unstructured":"A.KataokaT.Moriya:A backward adaptive 8 kbit\/s speech coder using conditional pitch prediction. Proc. IEEE Global Commun. Conf. 1991 p.1889\u20131893.","DOI":"10.21437\/ICSLP.1990-187"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1109\/TASSP.1979.1163237"},{"key":"e_1_2_1_7_2","doi-asserted-by":"crossref","unstructured":"P.Kroon B. 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