DSD sample rates
DSD is one of kind of sigma delta modulation. Its sample rates are multiple 44100 Hz:
1. DSD (Direct Stream Digital) technology is also called [Direct Digital Stream]. It is jointly developed by Philips and SONY. The sampling frequency is 64 times higher than that of ordinary CDs, and the dynamic range is extended to 5 times that of ordinary CDs. Beyond all the current audio formats, the most authentic reproduction of the original live sound. DSD-CD is to convert the traditional music master tape through DSD technology and convert it into CD format that can be played on ordinary equipment;
2. Therefore, you can listen to the clearer and more original sounds of nature brought by DSD-CD on ordinary CD players, and make ordinary audio systems glow with unprecedented new energy; DSD CD can be played on all CD players;
3. DSD technology uses 1bit (bit) A/D converter and Sigma/delta modulator to achieve recording or encoding. The sampling frequency of DSD system is 2.8224mhz, which is 64 times higher than the 44.lkhz sampling frequency of traditional CD. This frequency indicates that the quantization is processed at a speed of 2.8224 million times per second, and then 1-bit data is recorded on the record. Although the number of bits is only 1/16 of that used in the CD format, the sampling frequency is 64 times higher, resulting in the data capability of DSD. Four times larger than CD, in theory, it can expand the frequency range to about 1.4mhz, so the overall sound effect is improved;
4. At the same time, because the so-called “noise shaping circuit” has been developed in DSD technology, the noise in the audible frequency band (0 ~ 20kHz) can be further transferred to the super-audio range above 20kHz, so that the signal-to-noise of DSD CD can be reduced. ratio up to 120dB or more