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CD-DA：光盤數(shù)字音頻 (CD-DA: Compact Disc Digital Audio)

CD-DA is an abbreviation of "Compact Disc Digital Audio".

CD-DA是“光盤數(shù)字音頻”的縮寫 。

It is also known as Audio CD, is the established conventional format for audio compact discs. The data format of Compact Disc Digital Audio and all the substantial specifications and standards are stated in the Red Book. In 1980, the Red Book was issued and made available by Philips and Sony, which includes the collection of all the substantial specifications and add significant details about the format of Compact Discs. The format of CD-DA is the same as that which is used in ordinary CD players.

也稱為音頻CD ，是音頻光盤的常規(guī)格式。 光盤數(shù)字音頻的數(shù)據(jù)格式以及所有重要的規(guī)范和標(biāo)準(zhǔn)在《紅皮書》中都有說明。 1980年，飛利浦和索尼發(fā)行并提供了紅皮書，其中包括所有主要規(guī)格的集合，并增加了有關(guān)光盤格式的重要信息。 CD-DA的格式與普通CD播放機(jī)中使用的格式相同。

Red Book Formats:

紅皮書格式：

In Red Book, the CD-DA format follows some specific standards which are common in the case of the entire CD formats.

在紅皮書中， CD-DA格式遵循某些特定標(biāo)準(zhǔn)，這些標(biāo)準(zhǔn)在整個(gè)CD格式中很常見。

All the frameworks and specifications in the standard of Red Book, which are common to the entire compact discs, comprise,

整個(gè)光盤所共有的《紅皮書》標(biāo)準(zhǔn)中的所有框架和規(guī)范包括：

• Physical frameworks

  物理框架

• Optical frameworks

  光學(xué)框架

• Deviations and error rates

  偏差和錯(cuò)誤率

• Modulation systems

  調(diào)制系統(tǒng)

• Error correction facility

  糾錯(cuò)工具

• Digital audio encoding specifications

  數(shù)字音頻編碼規(guī)范

音頻格式 (Format of Audio)

• In CD-DA format, the audio comprises two-channel signed to represent numbers in 16-bit linear PCM, which is sampled at 44,100 Hz.

  在CD-DA格式中，音頻包括兩個(gè)通道的帶符號(hào)的代表16位線性PCM中的數(shù)字，以44,100 Hz采樣。

• In case for purposes of encoding, audio samples are all signed 16-bit two's complement integer, which contains sample values from ?32768 to +32767.

  為了進(jìn)行編碼，音頻樣本都是帶符號(hào)的16位二進(jìn)制補(bǔ)碼整數(shù)，其中包含從-32768到+32767的樣本值。

  The frequencies specified by an audio CD can be up to 22.05 kHz, which is the Nyquist frequency sampled at the rate of 44.1 kHz.

  音頻CD所指定的頻率可以高達(dá)22.05 kHz，這是以44.1 kHz的速率采樣的奈奎斯特頻率。

• The format of data of audio is classified into frames, frames classified into twelve samples with six in left and six in right samples, discontinuous, which resulted in a sum of total 192 bits or 24 bytes of data of audio per frame.

  音頻數(shù)據(jù)的格式分為幀，不連續(xù)的幀分為十二個(gè)樣本，左六個(gè)樣本，右六個(gè)樣本，這導(dǎo)致每幀總共192位或24字節(jié)的音頻數(shù)據(jù)。

音軌 (Tracks)

• The major unit section on a CD is called a track.

  CD上的主要單元部分稱為軌道。

• A CD can comprise up to 99 tracks, which comprise a data track for mixed-mode discs.

  CD最多可包含99個(gè)磁道，其中包括用于混合模式光盤的數(shù)據(jù)磁道。

• Every track can sequentially have in order up to 100 indexes.

  每個(gè)音軌可以依次具有多達(dá)100個(gè)索引。

• The enormous greater section of songs is recorded under index 1, by taking the pre-gap being index 0.

  通過將預(yù)間隙設(shè)為索引0，將歌曲的較大部分記錄在索引1下。

Reference: Compact Disc Digital Audio

參考： 光盤數(shù)字音頻

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Algo tagged in: Dictionary – 'C'

Algo標(biāo)簽在： 詞典 –'C '

翻譯自: https://www.includehelp.com/dictionary/cdda-full-form.aspx

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