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Speech coding
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== Categories == Speech coders are of two classes:<ref>{{cite web |url = http://users.ece.gatech.edu/~juang/8873/Bae-LPC10.ppt |title = Soo Hyun Bae, ECE 8873 Data Compression & Modeling, Georgia Institute of Technology, 2004 |archive-url=https://web.archive.org/web/20060907225836/http://users.ece.gatech.edu/~juang/8873/Bae-LPC10.ppt |archive-date=7 September 2006 |url-status=dead}}</ref> # Waveform coders #* Time-domain: [[PCM]], [[ADPCM]] #* Frequency-domain: [[sub-band coding]], [[ATRAC]] # [[Vocoder]]s #* [[Linear predictive coding]] (LPC) #* [[Formant synthesis|Formant coding]] #* [[Machine learning]], i.e. [[Deep learning speech synthesis#Neural vocoder|neural vocoder]]<ref>{{cite journal |last1=Zeghidour |first1=Neil |last2=Luebs |first2=Alejandro |last3=Omran |first3=Ahmed |last4=Skoglund |first4=Jan |last5=Tagliasacchi |first5=Marco |title=SoundStream: An End-to-End Neural Audio Codec |journal=IEEE/ACM Transactions on Audio, Speech, and Language Processing |date=2022 |volume=30 |pages=495β507 |doi=10.1109/TASLP.2021.3129994|arxiv=2107.03312|s2cid=236149944 }}</ref>
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