Media Comparison
Noor Hakim Bin Ramli (14303)
D-AP301 Sound Reinforcement
This essay lays down the process of manufacturing for each topic, how audio is played back, and what features they have to offer.
Vinyls
Vinyls were the beginning of audio mediums used before Compact Disc. 78 rpm was the standard but differs from countries and offers up to 50 minutes of audio playback. Audio is captured via a horn and piped to a diaphragm where its stylus will cut along the groove of the Vinyl on a lathe.The groove is cut according to the waveform as wider cuts represented the frequency and deeper cuts represented the amplitude of the audio. During the mastering process, recording into vinyl requires the mastering engineer to make quick adjustments on the spot as the process is continuously running.
The mastered vinyl or known as the master lacquer is sent to the manufacturing plant. First, it
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It supports high resolution audio in either two or multi channel up to 6 full range discrete channels of music, featuring 4.7 GB as a Single layer or 8.5GB as a Dual Layer DVD disk. It uses a different standard called the scarlet book and it doesnt use PCM but another technology called Direct Stream Digital.
DSD
Direct Stream Digital or DSD helps SA-CD delivers improved frequency response from 0 - 100kHz and extends dynamic range of up to 120dB, giving more of an analog like experience in audio reproduction. The idea is that it uses a single bit sample resolution however having the sample rate to be 2.8224MHz
DVD-audio
Digital Versatile Disc (DVD) by Panasonic offers similar options akin to SA-CD, 4.7GB data. 6 channel audio. However, the difference is the audio format as DVD audio sticks back to improving the sample resolution thru PCM, with now the maximum resolution being 24 bit 96kHz instead of 16 bit 48kHz that CDs