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Harmonic Vector Excitation Coding, abbreviated as HVXC is a speech coding algorithm specified in MPEG-4 Part 3 (MPEG-4 Audio) standard for very low bit rate speech coding. HVXC supports bit rates of 2 and 4 kbit/s in the fixed and variable bit rate mode and sampling frequency 8 kHz. It also operates at lower bitrates, such as 1.2 - 1.7 kbit/s, using a variable bit rate technique. The total algorithmic delay for the encoder and decoder is 36 ms.

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  • Harmonic Vector Excitation Coding (de)
  • Harmonic Vector Excitation Coding (en)
  • Harmonic Vector Excitation Coding (ja)
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  • Harmonic Vector Excitation Coding (HVXC) ist ein auf die Übertragung von Sprache optimiertes Verfahren zur Kompression von Audiodaten. Trotz sehr geringer Bitraten sind HVXC-kodierte Daten für die Übermittlung von Sprache in einer akzeptablen Qualität geeignet. Eingesetzt wird es im digitalen Rundfunk, bei der Satellitenkommunikation und Internettelefonie sowie für . Dieses Verfahren ist Teil des MPEG-4-Standards, es wird in ISO/IEC 14496-3 beschrieben. (de)
  • Harmonic Vector Excitation Coding、あるいは HVXC は、MPEG-4 オーディオ（MPEG-4 Part 3）で採用された低ビットレートの音声符号化方式である。人間の音声を対象とし、2 kbps と 4 kbps の2種類の固定ビットレート、および 1.2 ～ 1.7 kbps 程度の可変ビットレートをサポートする。 HVXC は、デジタル放送、携帯電話、インターネット電話、音声データベースなどの様々な用途に使うことができる。 (ja)
  • Harmonic Vector Excitation Coding, abbreviated as HVXC is a speech coding algorithm specified in MPEG-4 Part 3 (MPEG-4 Audio) standard for very low bit rate speech coding. HVXC supports bit rates of 2 and 4 kbit/s in the fixed and variable bit rate mode and sampling frequency 8 kHz. It also operates at lower bitrates, such as 1.2 - 1.7 kbit/s, using a variable bit rate technique. The total algorithmic delay for the encoder and decoder is 36 ms. (en)
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  • Harmonic Vector Excitation Coding (HVXC) ist ein auf die Übertragung von Sprache optimiertes Verfahren zur Kompression von Audiodaten. Trotz sehr geringer Bitraten sind HVXC-kodierte Daten für die Übermittlung von Sprache in einer akzeptablen Qualität geeignet. Eingesetzt wird es im digitalen Rundfunk, bei der Satellitenkommunikation und Internettelefonie sowie für . Dieses Verfahren ist Teil des MPEG-4-Standards, es wird in ISO/IEC 14496-3 beschrieben. (de)
  • Harmonic Vector Excitation Coding, abbreviated as HVXC is a speech coding algorithm specified in MPEG-4 Part 3 (MPEG-4 Audio) standard for very low bit rate speech coding. HVXC supports bit rates of 2 and 4 kbit/s in the fixed and variable bit rate mode and sampling frequency 8 kHz. It also operates at lower bitrates, such as 1.2 - 1.7 kbit/s, using a variable bit rate technique. The total algorithmic delay for the encoder and decoder is 36 ms. It was published as subpart 2 of ISO/IEC 14496-3:1999 (MPEG-4 Audio) in 1999. An extended version of HVXC was published in MPEG-4 Audio Version 2 (ISO/IEC 14496-3:1999/Amd 1:2000). MPEG-4 Natural Speech Coding Tool Set uses two algorithms: HVXC and CELP (Code Excited Linear Prediction). HVXC is used at a low bit rate of 2 or 4 kbit/s. Higher bitrates than 4 kbit/s in addition to 3.85 kbit/s are covered by CELP. (en)
  • Harmonic Vector Excitation Coding、あるいは HVXC は、MPEG-4 オーディオ（MPEG-4 Part 3）で採用された低ビットレートの音声符号化方式である。人間の音声を対象とし、2 kbps と 4 kbps の2種類の固定ビットレート、および 1.2 ～ 1.7 kbps 程度の可変ビットレートをサポートする。 HVXC は、デジタル放送、携帯電話、インターネット電話、音声データベースなどの様々な用途に使うことができる。 (ja)
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