These two factors – sample rate and bit depth – determine the quality of a digital recording. A digital-to-analog convertor (DAC) is used to convert the audio back to an analog signal that can be listened to with a loudspeaker or headphones. In order to listen to the audio that is stored within a digital file, the process is reversed. 44,100 Hz, 16-bit is considered “CD-quality” audio. This is referred to as the “sample rate.” The amount of information captured in each sample is referred to as the “bit depth,” and most commonly is 16 bits. To produce a digital file, an analog-to-digital convertor (ADC) takes samples of the audio stream at a certain rate, most commonly 44,100 times per second. But with digital, audio exists as a file. Before this time, audio was distributed on physical medium, such as a vinyl record or a cassette tape. In the very late 1970s and early 1980s, digital recording and playback systems began to emerge. Is this just the latest fad in the industry or is there really something to it? Before answering this question, let’s have a brief review of digital audio from the 10,000-foot level. ![]() Answer: The audio world is buzzing (forgive the pun) over High-Resolution Audio.
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