RU2008146294A - METHOD FOR FORMING EXCITATION SIGNAL IN LOW SPEED VOCOCHERS WITH LINEAR PREDICTION - Google Patents
METHOD FOR FORMING EXCITATION SIGNAL IN LOW SPEED VOCOCHERS WITH LINEAR PREDICTION Download PDFInfo
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- RU2008146294A RU2008146294A RU2008146294/09A RU2008146294A RU2008146294A RU 2008146294 A RU2008146294 A RU 2008146294A RU 2008146294/09 A RU2008146294/09 A RU 2008146294/09A RU 2008146294 A RU2008146294 A RU 2008146294A RU 2008146294 A RU2008146294 A RU 2008146294A
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- excitation signal
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Abstract
Способ синтеза сигналов возбуждения в вокодерах с линейным предсказанием, основанный на формировании сигнала возбуждения путем использования параметров синтезирующего фильтра, отличающийся от известных решений тем, что происходит отказ от передачи по каналу связи информации о сигнале возбуждения, при этом для формирования сигнала возбуждения в вокодере на основе линейного предсказания на приеме из кадра передачи выделяют параметры синтезирующего фильтра, содержащие информацию о коэффициентах предсказания или линейных спектральных частотах, а также значение коэффициента усиления сигнала возбуждения, по данным параметрам рассчитывают амплитудно-частотную характеристику синтезирующего фильтра на фазовых углах его полюсов и формируют спектр амплитуд и фаз сигнала возбуждения, затем формируют сигнал возбуждения на основе данных о коэффициенте усиления и спектрах его амплитуд и фаз, который используют в синтезирующем фильтре вокодера с линейным предсказанием для формирования сегмента речевого сигнала на участке квазистационарности. A method for synthesizing excitation signals in linear prediction vocoders based on generating an excitation signal by using parameters of a synthesizing filter, which differs from the known solutions in that the transmission of information about the excitation signal is rejected through the communication channel, while generating an excitation signal in the vocoder based on the linear prediction at the reception of the transmission frame allocate the parameters of the synthesizing filter containing information about the prediction coefficients or linear spectral frequencies, as well as the value of the gain of the excitation signal, according to these parameters, the amplitude-frequency characteristic of the synthesizing filter is calculated at the phase angles of its poles and the spectrum of amplitudes and phases of the excitation signal is formed, then the excitation signal is generated based on data on the gain and spectra of its amplitudes and phases which is used in a linear prediction vocoder synthesizer filter to form a segment of a speech signal in a quasi-stationarity section.
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| Application Number | Priority Date | Filing Date | Title |
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| RU2008146294/09A RU2400832C2 (en) | 2008-11-24 | 2008-11-24 | Method for generation of excitation signal in low-speed vocoders with linear prediction |
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| Application Number | Priority Date | Filing Date | Title |
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| RU2008146294/09A RU2400832C2 (en) | 2008-11-24 | 2008-11-24 | Method for generation of excitation signal in low-speed vocoders with linear prediction |
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| Publication Number | Publication Date |
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| RU2008146294A true RU2008146294A (en) | 2010-05-27 |
| RU2400832C2 RU2400832C2 (en) | 2010-09-27 |
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| RU2008146294/09A RU2400832C2 (en) | 2008-11-24 | 2008-11-24 | Method for generation of excitation signal in low-speed vocoders with linear prediction |
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Cited By (3)
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| RU2599338C1 (en) * | 2010-07-02 | 2016-10-10 | Долби Интернешнл Аб | Selective bass post-filter |
| US10304470B2 (en) | 2013-10-18 | 2019-05-28 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Concept for encoding an audio signal and decoding an audio signal using deterministic and noise like information |
| US10373625B2 (en) | 2013-10-18 | 2019-08-06 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Concept for encoding an audio signal and decoding an audio signal using speech related spectral shaping information |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2495504C1 (en) * | 2012-06-25 | 2013-10-10 | Государственное казенное образовательное учреждение высшего профессионального образования Академия Федеральной службы охраны Российской Федерации (Академия ФСО России) | Method of reducing transmission rate of linear prediction low bit rate voders |
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| US11183200B2 (en) | 2010-07-02 | 2021-11-23 | Dolby International Ab | Post filter for audio signals |
| US9552824B2 (en) | 2010-07-02 | 2017-01-24 | Dolby International Ab | Post filter |
| US9558753B2 (en) | 2010-07-02 | 2017-01-31 | Dolby International Ab | Pitch filter for audio signals |
| US9558754B2 (en) | 2010-07-02 | 2017-01-31 | Dolby International Ab | Audio encoder and decoder with pitch prediction |
| US9595270B2 (en) | 2010-07-02 | 2017-03-14 | Dolby International Ab | Selective post filter |
| US9830923B2 (en) | 2010-07-02 | 2017-11-28 | Dolby International Ab | Selective bass post filter |
| US9858940B2 (en) | 2010-07-02 | 2018-01-02 | Dolby International Ab | Pitch filter for audio signals |
| US10236010B2 (en) | 2010-07-02 | 2019-03-19 | Dolby International Ab | Pitch filter for audio signals |
| RU2599338C1 (en) * | 2010-07-02 | 2016-10-10 | Долби Интернешнл Аб | Selective bass post-filter |
| US11996111B2 (en) | 2010-07-02 | 2024-05-28 | Dolby International Ab | Post filter for audio signals |
| US11610595B2 (en) | 2010-07-02 | 2023-03-21 | Dolby International Ab | Post filter for audio signals |
| US10811024B2 (en) | 2010-07-02 | 2020-10-20 | Dolby International Ab | Post filter for audio signals |
| US10304470B2 (en) | 2013-10-18 | 2019-05-28 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Concept for encoding an audio signal and decoding an audio signal using deterministic and noise like information |
| US10909997B2 (en) | 2013-10-18 | 2021-02-02 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Concept for encoding an audio signal and decoding an audio signal using speech related spectral shaping information |
| US10607619B2 (en) | 2013-10-18 | 2020-03-31 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Concept for encoding an audio signal and decoding an audio signal using deterministic and noise like information |
| US11798570B2 (en) | 2013-10-18 | 2023-10-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Concept for encoding an audio signal and decoding an audio signal using deterministic and noise like information |
| US11881228B2 (en) | 2013-10-18 | 2024-01-23 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E. V. | Concept for encoding an audio signal and decoding an audio signal using speech related spectral shaping information |
| US10373625B2 (en) | 2013-10-18 | 2019-08-06 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Concept for encoding an audio signal and decoding an audio signal using speech related spectral shaping information |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2400832C2 (en) | 2010-09-27 |
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Effective date: 20101125 |