TG: óptico (disco sonoro digital)(por)
UP (é traduzido por): DVD-Audio(eng)
UP (extenso de ): DVD-A(por)
TR (características do produto): disco sonoro(por)
UP (é traduzido por): DVD-Audio(eng)
UP (extenso de ): DVD-A(por)
TR (características do produto): disco sonoro(por)
Definição do conceito
[POR] DVD-Audio (também chamado de DVD-A) é um disco de áudio para gravação de som em alta definição. DVD-A não foi criado para gravação de vídeo e não deve ser confundido com o DVD com conteúdo de shows. Os primeiros discos foram criados em 2000. Ele foi criado para combater a guerra dos formatos com Super Audio CD (SACD), que é outro formato para gravação de conteúdo de áudio em alta definição. Nenhum dos dois tiveram uma boa posição no mercado. | ESPECIFICAÇÕES: DVD-A pode ser armazenado em diferentes combinações: 16, 20 ou 24-bit | 44,1 - 48 - 88,2 - 96 - 176,4 - 192 kHz | mono - stereo (2.0) - stereo (2.1) - quad (4.0 ou 4.1) até full surround (5.0 ou 5.1). | FONTE : DVD-Audio. in: Wikipédia. Disponivel em : https://pt.wikipedia.org/wiki/DVD-Audio Acesso em: 10 ago. 2022.
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[SPA] El DVD-Audio, también conocido como DVD-A, es un formato de audio de alta definición en DVD. Fue desarrollado por Pioneer y Matsushita, en colaboración con otras empresas. En su momento fue reemplazado por el Blu-ray Audio, el cual también decayó posteriormente. | El DVD-A pertenece a la familia del DVD (aparecido en 1997), que incluye también el DVD-Video (DVD), el DVD-ROM, el DVD-R y el DVD-RAM. | El DVD-A está dividido en tres grandes zonas: | * audio. | * video (videoclips). | * datos (textos, como por ejemplo letras de las canciones, biografías de los artistas...; imágenes; etc.). || A estas zonas se accede mediante un menú, por lo que hay que conectar un monitor de televisión. | El DVD-A utiliza la modulación por impulsos codificados (MIC o PCM) para codificar el audio (de forma digital). Admite 6 frecuencias de muestreo: * 44,1 kHz y sus múltiplos: 88,2 kHz (44,1 kHz x2) y 176,4 kHz (44,1 kHz x4). | * 48 kHz y sus múltiplos: 96 kHz (48 kHz x2) y 192 kHz (48 kHz x4). | ... | Para mantener la compatibilidad con los lectores CD convencionales, el DVD-A utiliza discos de doble capa: [1] La capa superior, semitransparente, es leída por un láser con una longitud de onda corta. [2] La capa inferior (que lee un láser con una longitud de onda más larga que alcanza mayor profundidad) contiene la misma información pero codificada de forma que pueda ser leída por un reproductor de CD convencional. | ... | El DVD-A utiliza Meridian Lossless Packing (MLP) como código canal. Se trate de un tipo de compresión sin pérdidas, es decir, reduce la densidad de datos sin despreciar ninguna información. Esta compresión sin pérdidas lo ha convertido en un formato de alta fidelidad para audio. | Para evitar la piratería, los DVD-A incluyen una “marca de agua” en su trama de datos. | Los discos DVD-Audio V son unos discos similares a los DVD-A (DVD-Audio), pero que contienen además objetos de video (videoclips, entrevistas, etc). El audio del DVD-Audio V ya no está codificado con MLP sino que utilizan el códec AC-3. Estos discos se reproducen en un lector universal o de audio, pero, para ver la información de vídeo, hay que reproducirlo en un DVD-Video. | FUENTE : DVD-Audio. in: Wikipedia. Disponible en : https://es.wikipedia.org/wiki/DVD-Audio Acceso en : 10 ago. 2022.
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[ENG] DVD-Audio (commonly abbreviated as DVD-A) is a digital format for delivering high-fidelity audio content on a DVD. DVD-Audio uses most of the storage on the disc for high-quality audio and is not intended to be a video delivery format. | The standard was published in March 1999[3] and the first discs entered the marketplace in 2000. DVD-Audio was in a format war with Super Audio CD (SACD), and along with consumers´ tastes tending towards downloadable music, these factors meant that neither high-quality disc achieved considerable market penetration; DVD-Audio has been described as "extinct" by 2007.[5] As of June 2019, Amazon lists only 155 albums available on "Audio DVD". DVD-Audio remains a niche market but some independent online labels[6] offer a wider choice of titles. | AUDIO SPECIFICATIONS : DVD-Audio offers many possible configurations of audio channels, ranging from single-channel mono to 5.1-channel surround sound, at various sampling frequencies and sample rates.[7] (The ".1" denotes a low-frequency effects channel (LFE) for bass and/or special audio effects.) | Compared to the Compact Disc, the much higher capacity DVD format enables the inclusion of either: | * Considerably more music (with respect to total running time and quantity of songs) or | * Encoding at higher linear sampling rates and more bits-per-sample, and/or | * Additional channels for spatial sound reproduction. || Audio on a DVD-Audio disc can be stored in many different bit depth/sampling rate/channel combinations. || Different bit depth/sampling rate/channel combinations can be used on a single disc. For instance, a DVD-Audio disc may contain a 96 kHz/24-bit 5.1-channel audio track as well as a 192 kHz/24-bit stereo audio track. Also, the channels of a track can be split into two groups stored at different resolutions. For example, the front speakers could be 96/24, while the surrounds are 48/20. | Audio is stored on the disc in Linear PCM format, which is either uncompressed or losslessly compressed with MLP (Meridian Lossless Packing).[1] The maximum permissible total bit rate is 9.6 Megabits per second. Channel/resolution combinations that would exceed this need to be compressed. In uncompressed modes, it is possible to get up to 96/16 or 48/24 in 5.1, and 192/24 in stereo. To store 5.1 tracks in 88.2/20, 88.2/24, 96/20 or 96/24 MLP encoding is mandatory. | If no native stereo audio exists on the disc, the DVD-Audio player may be able to downmix the 5.1-channel audio to two-channel stereo audio if the listener does not have a surround sound setup (provided that the coefficients were set in the stream at authoring). Downmixing can only be done to two-channel stereo, not to other configurations, such as 4.0 quad. DVD-Audio may also feature menus, text subtitles, still images and video, plus in high end authoring systems it is also possible to link directly into a Video_TS directory that might contain video tracks, as well as PCM stereo and other "bonus" features. | FORMAT VARIANTS : Four of the major music labels, Universal Music, EMI, Warner Bros. Records, Naxos Records and several smaller audiophile labels (such as AIX Records, Claudio Records, DTS Entertainment, Silverline Records, OgreOgress productions, Tacet and Teldec) have released albums on DVD-Audio, but the number is minimal compared to standard CDs. New high-definition titles have been released in standard DVD-Video format (which can contain two-channel Linear PCM audio data ranging from 48 kHz/16-bit to 96 kHz/24-bit), "HDAD",[17] which includes a DVD-Video format recording on one side and DVD-Audio on the other, CD/DVD packages, which can include the album on both CD and DVD-Audio, or DualDisc, which can contain DVD-Audio content on the DVD side. In addition, some titles that had been initially released as a standalone DVD-Audio disc[18] were re-released as a CD/DVD package or as a DualDisc. | SOURCE : DVD-Audio. in: WIkipedia. Available at : https://en.wikipedia.org/wiki/DVD-Audio Accessed : 10 aug. 2022.
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