HDES有什么不能理解的？
mididisc.org上面对HDES解释的很清楚：
H.D.E.S. Panasonic, having developed some parts of their ATRAC1 (SP-mode) encoder independently of Sony, touts it in their Minidisc equipment. Beginning with the SJ-MR200, they have been refering to their "H.D.E.S." (High Density Encoding System) feature. This is basically Panasonic's ATRAC1 algorithm, and of course it's fully compatible with the ATRAC of Sony and Sharp.
Panasonic Singapore describes it as follows: "This system has three major advantages over ATRAC and other conventional encoding systems. First, it uses advanced bit allocation. Second, it assures more precise attack signal detection. And third, it uses high precision quantization technology. The result is an expansive, exceptionally high quality sound with virtually no noise." What's left out of course is (1) Which ATRAC is it being compared with? (Is it Sony's or Sharp's, and which version?) and (2) Does it actually sound better, objectively? Without published test results it is difficult to say whether Panasonic has made an actual advance, or whether they are simply making the most marketing hay of their effort to develop their ATRAC.
Technics SJ-MD100
Features: TA-KEH II electrolyte capacitor for high quality sound, Convenient Jog Dial for track access and text entry, "pseudo" timer for Play/Rec (i.e. no built-in clock), line input with recording level control, headphone output with level control, remote control.
Specs: 24 bit Technics-ATRAC, 20 bit AD/DA converter, S/N ratio: 99dB, dynamic range: 97dB, frequency response: 5Hz-20kHz (+/-0.3dB), sampling rate converter (32/44.1/48 kHz).
这个算是松下的台式MD机吧。
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发表于 2016-5-10 15:51
