adpcm wikipedia - EAS

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  1. Adaptive differential pulse-code modulation
    • Theo 7 nguồn
    From Wikipedia, the free encyclopedia Adaptive differential pulse-code modulation (ADPCM) is a variant of differential pulse-code modulation (DPCM) that varies the size of the quantization step, to allow further reduction of the required data bandwidth for a given signal-to-noise ratio.

    Adaptive differential pulse-code modulation - Wikipedia

    en.wikipedia.org
    Contribuisci a migliorarla secondo le convenzioni di Wikipedia. ADPCM (acronimo di Adaptive Differential Pulse Code Modulation) è tipo di compressione audio digitale nonché estensione della codifica digitale PCM di base, usata largamente nel campionamento, quantizzazione e codifica di segnali audio, soprattutto in campo di telefonia fissa.

    ADPCM - Wikipedia

    it.wikipedia.org
    Adaptive Differential Pulse Code Modulation (ADPCM), auch Delta Pulse Code Modulation genannt, ist eine komprimierende Kodierung für ein Signal, welche ähnlich wie Differential Pulse Code Modulation (DPCM) auf Differenzwerten basiert, und bei der zusätzlich die Skalierung der Quantisierungsstufen in Abhängigkeit vom Signalverlauf angepasst (adaptiert) werden.

    Adaptive Differential Pulse Code Modulation – Wikipedia

    de.wikipedia.org
    Adaptive Differential Pulse-Code Modulation - ADPCM é uma técnica para converter som ou informação analógica em informação binária, através de amostras de som e expressando o valor dessa amostra em termos binários.

    ADPCM – Wikipédia, a enciclopédia livre

    pt.wikipedia.org
    L’ Adaptive Differential Pulse Code Modulation (ADPCM) (en français, Modulation par impulsions et codage différentiel adaptatif (MICDA)) est un algorithme non standardisé de compression de données avec perte.

    Adaptive Differential Pulse Code Modulation — Wikipédia

    fr.wikipedia.org
    ADPCM (Adaptive Differential Pulse Code Modulation)은 데이터 압축 방법중 예측방법에 속하며 예측값을 상수로서 사용하지 않고, 표본으로 삼은 신호의 짧은 구간에 따라 예측값을 동적으로 결정하여 그값을 사용하고 그 값과의 차이를 부호화하는 방식이다.

    펄스 부호 변조 - 위키백과, 우리 모두의 백과사전

    ko.wikipedia.org
    Adaptive differential pulse-code modulation, ADPCM) — разновидность дифференциальной импульсно-кодовой модуляции, алгоритм которой подразумевает изменение шага квантования, что позволяет снизить требуемую полосу пропускания для заданного отношения сигнал/шум.

    Адаптивная дифференциальная импул…

    ru.wikipedia.org
  2. Mọi người cũng hỏi
    What does ADPCM stand for?
    Jump to navigation Jump to search. Adaptive differential pulse-code modulation (ADPCM) is a variant of differential pulse-code modulation (DPCM) that varies the size of the quantization step, to allow further reduction of the required data bandwidth for a given signal-to-noise ratio.

    Adaptive differential pulse-code modulation - Wikipedia

    en.wikipedia.org/wiki/Adaptive_differential_pulse-code_m…
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    What is ADPCM (adaptive differential pulse code modulation)?
    Adaptive differential pulse-code modulation ( ADPCM) is a variant of differential pulse-code modulation (DPCM) that varies the size of the quantization step, to allow further reduction of the required data bandwidth for a given signal-to-noise ratio .

    Adaptive differential pulse-code modulation - Wikipedia

    en.wikipedia.org/wiki/Adaptive_differential_pulse-code_m…
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    What is adadpcm?
    ADPCM was developed for speech coding by P. Cummiskey, Nikil S. Jayant and James L. Flanagan at Bell Labs in 1973. In telephony, a standard audio signal for a single phone call is encoded as 8000 analog samples per second, of 8 bits each, giving a 64 kbit/s digital signal known as DS0.

    Adaptive differential pulse-code modulation - Wikipedia

    en.wikipedia.org/wiki/Adaptive_differential_pulse-code_m…
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    What is Dialogic ADPCM algorithm?
    The algorithm for Dialogic ADPCM was developed by Oki Electric, which also produced ICs such as the Oki Semiconductor MSM7580 to implement the algorithm in hardware. These ICs were used on popular telephony interface cards manufactured by Dialogic Corporation for use in voicemail and similar systems.

    Dialogic ADPCM - Wikipedia

    en.wikipedia.org/wiki/Dialogic_ADPCM
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    Phản hồi

  3. Adaptive differential pulse-code modulation - Wikipedia

    https://en.wikipedia.org/wiki/Adaptive_differential_pulse-code_modulation

    G.722 is an ITU-T standard wideband speech codec operating at 48, 56 and 64 kbit/s, based on subband coding with two channels and ADPCM coding of each. Before the digitization process, it catches the analog signal and divides it in frequency bands with QMFfilters (quadrature mirror filters) to get two subbands of the signal. When the ADPCM bitstream of each subband is obtained, the res…

    G.722 is an ITU-T standard wideband speech codec operating at 48, 56 and 64 kbit/s, based on subband coding with two channels and ADPCM coding of each. Before the digitization process, it catches the analog signal and divides it in frequency bands with QMFfilters (quadrature mirror filters) to get two subbands of the signal. When the ADPCM bitstream of each subband is obtained, the res…

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  4. Dialogic ADPCM - Wikipedia

    https://en.wikipedia.org/wiki/Dialogic_ADPCM

    Dialogic ADPCM or VOX is an audio file format, optimized for storing digitized voice data at a low sampling rate.VOX files are most commonly found in telephony applications, as well as an occasional arcade redemption game. [citation needed] It uses a lossy compression algorithm, optimized for voice, not high fidelity.Similar to other ADPCM (Adaptive Differential Pulse Code …

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    • ADPCM - Wikipedia

      https://it.wikipedia.org/wiki/ADPCM

      ADPCM (acronimo di Adaptive Differential Pulse Code Modulation) è tipo di compressione audio digitale nonché estensione della codifica digitale PCM di base, usata largamente nel campionamento, quantizzazione e codifica di segnali audio, soprattutto in campo di telefonia fissa.

      Wikipedia · Nội dung trong CC-BY-SA giấy phép

    • ADPCM – Wikipedia, wolna encyklopedia

      https://pl.wikipedia.org/wiki/ADPCM

      ADPCM (ang. Adaptive Differential Pulse-Code Modulation) – adaptacyjna różnicowa modulacja kodowo-impulsowa, która jest metodą stratnej kompresji cyfrowego zapisu dźwięku.W przypadku sygnału analogowego musi najpierw nastąpić jego próbkowanie i zapis w postaci cyfrowej PCM.Realizowane jest to w celu zmniejszenia ilości danych potrzebnych do zapisu dźwięku i …

    • ADPCM - Wikipedia, la enciclopedia libre

      https://es.wikipedia.org/wiki/ADPCM

      ADPCM se articula en la recomendación CCITT G.726, que reemplazó a los dos anteriores definiendo estándares para 16, 24, 32 y 40 kbits por segundo (que corresponden a tamaños de muestra de 2, 3, 4 y 5 bits respectivamente).

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      • Adaptive Differential Pulse Code Modulation – Wikipedia

        https://de.wikipedia.org/wiki/Adaptive_Differential_Pulse_Code_Modulation
        • Adaptive Differential Pulse Code Modulation (ADPCM), auch Delta Pulse Code Modulation genannt, ist eine komprimierende Kodierung für ein Signal, welche ähnlich wie Differential Pulse Code Modulation (DPCM) auf Differenzwerten basiert, und bei der zusätzlich die Skalierung der Quantisierungsstufen in Abhängigkeit vom Signalverlauf angepasst (adaptiert) werden. ADPCM …
        Xem thêm trên de.wikipedia.org
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        • Adaptive Differential Pulse Code Modulation — Wikipédia

          https://fr.wikipedia.org/wiki/Adaptive_Differential_Pulse_Code_Modulation

          Au milieu des années 1980, le CCITT a introduit l’ADPCM à 32 kbit/s . Plus tard, le G.726 et G.727 avec des taux différents (16, 24, 32 et 40 kbit/s ). Par …

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          • ADPCM – Wikipédia, a enciclopédia livre

            https://pt.wikipedia.org/wiki/ADPCM

            Adaptive Differential Pulse-Code Modulation - ADPCM é uma técnica para converter som ou informação analógica em informação binária, através de amostras de som e expressando o valor dessa amostra em termos binários.. O método normal (não-comprimido) de amostragem e quantização do sinal é chamado de codificação PCM (modulação por códigos de pulsos).

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            • 適応的差分パルス符号変調 - Wikipedia

              https://ja.wikipedia.org/wiki/適応的差分パルス符号変調

              適応的差分パルス符号変調（adaptive differential pulse code modulation：ADPCM、適応的差分PCM あるいは 適応差分PCM）とは自然信号に対する圧縮方式の一つである。 主に音声信号に用いられる。. 過去に復号された信号標本と現在の信号標本との差分信号を符号化する差分パルス符号変調（DPCM、差分PCM）を ...

            • DPCM – Wikipedia, wolna encyklopedia

              https://pl.wikipedia.org/wiki/DPCM

              DPCM (ang. Differential Pulse-Code Modulation) – metoda kompresji stratnej przeznaczona głównie dla sygnałów dźwiękowych.Różnicowa modulacja kodowo-impulsowa (DPCM) opiera się na zasadach kodowania sygnału stosowanych w modulacji kodowo-impulsowej (), a różnica polega wyłącznie na tym, że nadajnik DPCM próbkuje otrzymany sygnał, a następnie koduje …

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