Свойства объекта
| Дескриптор | |
| название | linear predictive coding |
| язык | английский |
| релятор | |
| определение 1 | LPC is a tool used mostly in audio signal processing and speech processing for representing the spectral envelope of a digital signal of speech in compressed form, using the information of a linear predictive model.It is one of the most powerful speech analysis techniques and one of the most useful methods for encoding good quality speech at a low bit rate and provides extremely accurate estimates of speech parameters.It starts with the assumption that a speech signal is produced by a buzzer at the end of a tube (voiced sounds), with occasional added hissing and popping sounds (sibilants and plosive sounds). |
| автор словарной статьи | Кривнова О.Ф. |
| комментарий | Although apparently crude,this model is actually a close approximation of the reality of speech production.The numbers which describe the intensity and frequency of the buzz,the formants,and the residue signal, can be stored or transmitted somewhere else.LPC synthesizes the speech signal by reversing the process:use the buzz parameters and the residue to create a source signal,use the formants to create a filter(which represents the tube),and run the source through the filter,resulting in speech. |
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| Ассоциируется с (RelatedTerm) | |
| Дескриптор | |
| resynthesis | |
| Встречается дескриптор в разделе источника (SourceDescriptorPart) | |
| Источник | Раздел источника |
| Книга Holmes J. and Holmes W. | предметный_указатель |
| Дается определение в (SourceDef) | |
| Источник | определение |
| Интернет энциклопедия «Wikipedia» | 1 |
| Синоним (Syn) | |
| Аскриптор | |
| LPC | |