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 Figure 3 shows changes in an analogue sound wave (represented as the white waveform) and compares the sampling states of three different digital formats including 1-bit. Looking at each digital format's sampling time respectively, it is fairly obvious that 1-bit has the highest sampling speed. In the time frame it takes CD to sample the analogue sound once, DVD-A samples the same analogue sound 4 times and 1-bit samples it 64 times. In other words, 1-bit's time resolution ability, created by the 2.8224 MHz ultra high-speed sampling, produces a signal that is the greatest in terms of faithful reproduction of the original signal and in transient response. 1-Bit's delta-sigma modulation with ultra high-speed sampling and 7th-order noise shaping also realises a wide frequency and a wide dynamic range. Because of its sampling frequency of 44.1 kHz and 16-bit quantisation, CD format cannot always grant the dreams and desires of music lovers and audiophiles who wish to listen to natural sound at its original quality. Technological advances allow 1-bit format to achieve a sampling frequency of 2.8224 MHz and a dynamic range of 120 dB* with a frequency response of 0 Hz -- 100 kHz* by 7th-order delta-sigma modulation. With the ability to reproduce 100 kHz sound of high-hat cymbals and over 100 dB dynamic range of orchestra sound, 1-bit expresses the true sound of music including the full atmosphere of the performance space. * Theoretical value. |
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