{"id":"https://openalex.org/W2140665588","doi":"https://doi.org/10.1109/icassp.1980.1171047","title":"A 4800 bps LPC vocoder with improved excitation","display_name":"A 4800 bps LPC vocoder with improved excitation","publication_year":2005,"publication_date":"2005-03-24","ids":{"openalex":"https://openalex.org/W2140665588","doi":"https://doi.org/10.1109/icassp.1980.1171047","mag":"2140665588"},"language":"en","primary_location":{"id":"doi:10.1109/icassp.1980.1171047","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.1980.1171047","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ICASSP '80. IEEE International Conference on Acoustics, Speech, and Signal Processing","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5111622296","display_name":"C.K. Un","orcid":null},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Chong Un","raw_affiliation_strings":["Department of Electrical Science, Korea Advanced Institute of Science and Technology, Seoul, South Korea"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Science, Korea Advanced Institute of Science and Technology, Seoul, South Korea","institution_ids":["https://openalex.org/I157485424"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5024679686","display_name":"W. Sung","orcid":"https://orcid.org/0000-0001-6263-6766"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Won Sung","raw_affiliation_strings":["Department of Electrical Science, Korea Advanced Institute of Science and Technology, Seoul, South Korea"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Science, Korea Advanced Institute of Science and Technology, Seoul, South Korea","institution_ids":["https://openalex.org/I157485424"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5111622296"],"corresponding_institution_ids":["https://openalex.org/I157485424"],"apc_list":null,"apc_paid":null,"fwci":0.5875,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.71774194,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"5","issue":null,"first_page":"142","last_page":"145"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10901","display_name":"Advanced Data Compression Techniques","score":0.996999979019165,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10901","display_name":"Advanced Data Compression Techniques","score":0.996999979019165,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10860","display_name":"Speech and Audio Processing","score":0.9717000126838684,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10201","display_name":"Speech Recognition and Synthesis","score":0.9678999781608582,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/baseband","display_name":"Baseband","score":0.8168390989303589},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6924569606781006},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.6641860008239746},{"id":"https://openalex.org/keywords/signal","display_name":"SIGNAL (programming language)","score":0.5759714245796204},{"id":"https://openalex.org/keywords/speech-synthesis","display_name":"Speech synthesis","score":0.5710988640785217},{"id":"https://openalex.org/keywords/residual","display_name":"Residual","score":0.5482672452926636},{"id":"https://openalex.org/keywords/linear-predictive-coding","display_name":"Linear predictive coding","score":0.5135364532470703},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.42812949419021606},{"id":"https://openalex.org/keywords/speech-processing","display_name":"Speech processing","score":0.4100732207298279},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.3943043649196625},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.1667444407939911},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.1518169641494751},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.11352741718292236},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.11097076535224915},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.09305036067962646}],"concepts":[{"id":"https://openalex.org/C65165936","wikidata":"https://www.wikidata.org/wiki/Q575784","display_name":"Baseband","level":3,"score":0.8168390989303589},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6924569606781006},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.6641860008239746},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.5759714245796204},{"id":"https://openalex.org/C14999030","wikidata":"https://www.wikidata.org/wiki/Q16346","display_name":"Speech synthesis","level":2,"score":0.5710988640785217},{"id":"https://openalex.org/C155512373","wikidata":"https://www.wikidata.org/wiki/Q287450","display_name":"Residual","level":2,"score":0.5482672452926636},{"id":"https://openalex.org/C59883199","wikidata":"https://www.wikidata.org/wiki/Q1826438","display_name":"Linear predictive coding","level":3,"score":0.5135364532470703},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.42812949419021606},{"id":"https://openalex.org/C61328038","wikidata":"https://www.wikidata.org/wiki/Q3358061","display_name":"Speech processing","level":2,"score":0.4100732207298279},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.3943043649196625},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.1667444407939911},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.1518169641494751},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.11352741718292236},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.11097076535224915},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.09305036067962646},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icassp.1980.1171047","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.1980.1171047","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ICASSP '80. IEEE International Conference on Acoustics, Speech, and Signal Processing","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W1963884863","https://openalex.org/W1976313025","https://openalex.org/W2005581725","https://openalex.org/W2071914178","https://openalex.org/W2100849852","https://openalex.org/W2111670581","https://openalex.org/W6641178420","https://openalex.org/W6675345341"],"related_works":["https://openalex.org/W1762159047","https://openalex.org/W193702574","https://openalex.org/W1842536210","https://openalex.org/W1524172635","https://openalex.org/W1796893744","https://openalex.org/W2096476291","https://openalex.org/W1967664370","https://openalex.org/W2074460168","https://openalex.org/W2164147372","https://openalex.org/W2155010696"],"abstract_inverted_index":{"We":[0],"present":[1],"an":[2],"improved":[3],"4800":[4],"bps":[5],"LPC":[6,107],"vocoder":[7,96],"system":[8,23,64,85],"that":[9,44,103],"virtually":[10],"eliminates":[11],"the":[12,21,53,63,79,83,89,95],"buzzy":[13,90],"effect":[14],"from":[15],"synthetic":[16,80],"speech.":[17],"Excitation":[18],"signal":[19,39],"in":[20],"new":[22,84],"is":[24,56,65,99],"formed":[25],"by":[26,48],"adding":[27],"high-pass":[28],"filtered":[29],"pitch":[30,49,71],"pulses":[31],"or":[32],"random":[33],"noise":[34],"to":[35,68,74],"a":[36,59,93,105],"baseband":[37,54],"residual":[38,55],"(0":[40],"-":[41],"600":[42],"Hz)":[43],"has":[45],"been":[46],"coded":[47],"predictive":[50],"PCM.":[51],"Since":[52],"used":[57],"as":[58],"part":[60],"of":[61,82,104],"excitation,":[62],"also":[66],"robust":[67],"V/UV":[69],"and":[70],"errors.":[72],"According":[73],"our":[75],"informal":[76],"listening":[77],"tests,":[78],"speech":[81,97],"does":[86],"not":[87],"have":[88],"effect.":[91],"As":[92],"result":[94],"quality":[98],"more":[100],"natural":[101],"than":[102],"conventional":[106],"vocoder.":[108]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}