{"id":"https://openalex.org/W1893933614","doi":"https://doi.org/10.1109/icassp.1987.1169513","title":"A 16 kbps ADPCM with multi-quantizer (ADPCM-MQ) codec and its implementation by digital signal processor","display_name":"A 16 kbps ADPCM with multi-quantizer (ADPCM-MQ) codec and its implementation by digital signal processor","publication_year":2005,"publication_date":"2005-03-24","ids":{"openalex":"https://openalex.org/W1893933614","doi":"https://doi.org/10.1109/icassp.1987.1169513","mag":"1893933614"},"language":"en","primary_location":{"id":"doi:10.1109/icassp.1987.1169513","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.1987.1169513","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ICASSP '87. IEEE International Conference on Acoustics, Speech, and Signal Processing","raw_type":"proceedings-article"},"type":"conference-paper","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/A5006580723","display_name":"Tomohiko Taniguchi","orcid":"https://orcid.org/0000-0002-4999-3432"},"institutions":[{"id":"https://openalex.org/I2252096349","display_name":"Fujitsu (Japan)","ror":"https://ror.org/038e2g226","country_code":"JP","type":"company","lineage":["https://openalex.org/I2252096349"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"T. Taniguchi","raw_affiliation_strings":["Fujitsu Laboratories Limited, Kawasaki, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Fujitsu Laboratories Limited, Kawasaki, Japan","institution_ids":["https://openalex.org/I2252096349"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045665629","display_name":"S. Unagami","orcid":null},"institutions":[{"id":"https://openalex.org/I2252096349","display_name":"Fujitsu (Japan)","ror":"https://ror.org/038e2g226","country_code":"JP","type":"company","lineage":["https://openalex.org/I2252096349"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"S. Unagami","raw_affiliation_strings":["Fujitsu Laboratories Limited, Kawasaki, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Fujitsu Laboratories Limited, Kawasaki, Japan","institution_ids":["https://openalex.org/I2252096349"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017521695","display_name":"K. Iseda","orcid":null},"institutions":[{"id":"https://openalex.org/I2252096349","display_name":"Fujitsu (Japan)","ror":"https://ror.org/038e2g226","country_code":"JP","type":"company","lineage":["https://openalex.org/I2252096349"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"K. Iseda","raw_affiliation_strings":["Fujitsu Laboratories Limited, Kawasaki, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Fujitsu Laboratories Limited, Kawasaki, Japan","institution_ids":["https://openalex.org/I2252096349"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043011208","display_name":"Yukou Mochida","orcid":null},"institutions":[{"id":"https://openalex.org/I2252096349","display_name":"Fujitsu (Japan)","ror":"https://ror.org/038e2g226","country_code":"JP","type":"company","lineage":["https://openalex.org/I2252096349"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Y. Mochida","raw_affiliation_strings":["Fujitsu Laboratories Limited, Kawasaki, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Fujitsu Laboratories Limited, Kawasaki, Japan","institution_ids":["https://openalex.org/I2252096349"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5088217358","display_name":"S. Tominaga","orcid":null},"institutions":[{"id":"https://openalex.org/I2252096349","display_name":"Fujitsu (Japan)","ror":"https://ror.org/038e2g226","country_code":"JP","type":"company","lineage":["https://openalex.org/I2252096349"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"S. Tominaga","raw_affiliation_strings":["Fujitsu Laboratories Limited, Kawasaki, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Fujitsu Laboratories Limited, Kawasaki, Japan","institution_ids":["https://openalex.org/I2252096349"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I2252096349"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.11298546,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"12","issue":null,"first_page":"1340","last_page":"1343"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10901","display_name":"Advanced Data Compression Techniques","score":0.9973000288009644,"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":0.9973000288009644,"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/T10201","display_name":"Speech Recognition and Synthesis","score":0.9625999927520752,"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"}},{"id":"https://openalex.org/T10860","display_name":"Speech and Audio Processing","score":0.9573000073432922,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/codec","display_name":"Codec","score":0.8982706069946289},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8455876111984253},{"id":"https://openalex.org/keywords/encoder","display_name":"Encoder","score":0.6977983713150024},{"id":"https://openalex.org/keywords/adaptive-multi-rate-audio-codec","display_name":"Adaptive Multi-Rate audio codec","score":0.6125699877738953},{"id":"https://openalex.org/keywords/speech-coding","display_name":"Speech coding","score":0.5875142216682434},{"id":"https://openalex.org/keywords/codec2","display_name":"Codec2","score":0.5179354548454285},{"id":"https://openalex.org/keywords/computer-hardware","display_name":"Computer hardware","score":0.48305660486221313},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.47558295726776123},{"id":"https://openalex.org/keywords/full-rate","display_name":"Full Rate","score":0.46202147006988525},{"id":"https://openalex.org/keywords/digital-signal-processing","display_name":"Digital signal processing","score":0.457516610622406},{"id":"https://openalex.org/keywords/speech-processing","display_name":"Speech processing","score":0.2650381028652191},{"id":"https://openalex.org/keywords/linear-predictive-coding","display_name":"Linear predictive coding","score":0.26254814863204956},{"id":"https://openalex.org/keywords/voice-activity-detection","display_name":"Voice activity detection","score":0.260850727558136}],"concepts":[{"id":"https://openalex.org/C161765866","wikidata":"https://www.wikidata.org/wiki/Q184748","display_name":"Codec","level":2,"score":0.8982706069946289},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8455876111984253},{"id":"https://openalex.org/C118505674","wikidata":"https://www.wikidata.org/wiki/Q42586063","display_name":"Encoder","level":2,"score":0.6977983713150024},{"id":"https://openalex.org/C177067256","wikidata":"https://www.wikidata.org/wiki/Q4676210","display_name":"Adaptive Multi-Rate audio codec","level":4,"score":0.6125699877738953},{"id":"https://openalex.org/C13895895","wikidata":"https://www.wikidata.org/wiki/Q3270773","display_name":"Speech coding","level":2,"score":0.5875142216682434},{"id":"https://openalex.org/C75217168","wikidata":"https://www.wikidata.org/wiki/Q1105653","display_name":"Codec2","level":4,"score":0.5179354548454285},{"id":"https://openalex.org/C9390403","wikidata":"https://www.wikidata.org/wiki/Q3966","display_name":"Computer hardware","level":1,"score":0.48305660486221313},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.47558295726776123},{"id":"https://openalex.org/C197477341","wikidata":"https://www.wikidata.org/wiki/Q2532845","display_name":"Full Rate","level":3,"score":0.46202147006988525},{"id":"https://openalex.org/C84462506","wikidata":"https://www.wikidata.org/wiki/Q173142","display_name":"Digital signal processing","level":2,"score":0.457516610622406},{"id":"https://openalex.org/C61328038","wikidata":"https://www.wikidata.org/wiki/Q3358061","display_name":"Speech processing","level":2,"score":0.2650381028652191},{"id":"https://openalex.org/C59883199","wikidata":"https://www.wikidata.org/wiki/Q1826438","display_name":"Linear predictive coding","level":3,"score":0.26254814863204956},{"id":"https://openalex.org/C204201278","wikidata":"https://www.wikidata.org/wiki/Q1332614","display_name":"Voice activity detection","level":3,"score":0.260850727558136},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icassp.1987.1169513","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.1987.1169513","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ICASSP '87. IEEE International Conference on Acoustics, Speech, and Signal Processing","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.6200000047683716,"display_name":"Peace, Justice and strong institutions","id":"https://metadata.un.org/sdg/16"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":4,"referenced_works":["https://openalex.org/W1973497804","https://openalex.org/W2097821562","https://openalex.org/W2155954036","https://openalex.org/W6643820109"],"related_works":["https://openalex.org/W2060409740","https://openalex.org/W2092228680","https://openalex.org/W2363660481","https://openalex.org/W1890500690","https://openalex.org/W2159899134","https://openalex.org/W2369063343","https://openalex.org/W2370747337","https://openalex.org/W2374470469","https://openalex.org/W2899318368","https://openalex.org/W2787189739"],"abstract_inverted_index":{"This":[0],"paper":[1],"describes":[2],"an":[3],"implementation":[4],"of":[5,89,98,111],"a":[6,68,86,136],"new":[7],"16":[8],"kbps":[9],"speech":[10,66,82],"codec":[11,79,113],"using":[12,150],"commercially":[13],"available":[14],"DSPs":[15,52],"and":[16,38,59,144],"its":[17],"performance.":[18],"The":[19],"coding":[20,46],"algorithm":[21],"chosen":[22],"here":[23],"is":[24,114,121],"ADPCM":[25,33],"with":[26,67,85,135],"Multi-Quantizer":[27],"(ADPCM-MQ)":[28],"which":[29],"selects":[30],"the":[31,57,63,95,99,108],"optimum":[32],"coder":[34],"frame":[35,37],"by":[36],"switches":[39],"to":[40,91,142],"it":[41],"dynamically.":[42],"To":[43,93],"implement":[44],"this":[45,78,112,151],"algorithm,":[47],"we":[48],"used":[49],"two":[50],"Fujitsu":[51],"(MB8764),":[53],"1.5":[54],"chips":[55],"for":[56,62],"encoder":[58],"0.5":[60],"chip":[61],"decoder.":[64],"Reconstructed":[65],"21":[69],"dB":[70],"segmental":[71],"SNR":[72],"was":[73,104],"obtained.":[74],"With":[75],"error":[76,138],"correction,":[77],"provides":[80],"good":[81],"quality":[83,97],"even":[84],"bit-error":[87],"rate":[88,139],"10^-2":[90],"10^-3.":[92],"improve":[94],"subjective":[96],"reconstructed":[100],"speech,":[101],"adaptive":[102],"postfiltering":[103],"also":[105],"applied.":[106],"Since":[107],"processing":[109],"delay":[110],"less":[115],"than":[116],"10":[117],"ms,":[118],"no":[119],"echo-canceller":[120],"needed.":[122],"Moreover,":[123],"2400":[124],"bps":[125],"voice":[126],"band":[127],"data":[128,137],"(CCITT":[129],"Rec.V.":[130],"26)":[131],"could":[132],"be":[133],"transmitted":[134,149],"from":[140],"10^-7":[141],"5\u00d710^-6,":[143],"G.III":[145],"facsimiles":[146],"were":[147],"successfully":[148],"codec.":[152]},"counts_by_year":[],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}