2006-12-01 02:01:21 · 7 answers · asked by xxlily 1 in Consumer Electronics ➔ Music & Music Players
Dolby is generally used as a surround sound standard. For example Dolby Pro-Logic takes in a stereo signal and guesses to which of the 5 channels it should go to. Dolby digital takes in a digital signal which has the information already encoded for each channel. In an MP3 player you can only play stereo. There would be no advantage to have Dolby sound.
Also they need to pay extra for Dolby.
2006-12-01 02:05:23 · answer #1 · answered by grdmiller 2 · 0⤊ 1⤋
You first need to understand what Dolby sound is and I think that will answer your question.
Dolby Digital is the marketing name for a series of lossy audio compression technologies by Dolby Laboratories.
Dolby Digital, or AC-3, is the common version containing up to 6 discrete channels of sound, with 5 channels for normal-range speakers (20 Hz - 20,000 Hz) (Right front, Center, Left Front, Right Rear and Left Rear) and one channel (20 Hz - 120 Hz) for the LFE, or subwoofer. The Dolby Digital format supports Mono and Stereo usages as well.
This codec has several aliases, which are different names for the same codec:
* Dolby Digital (promotion name, not accepted by the ATSC)
* DD (an abbreviation of above, often combined with channel count: DD 5.1)
* Dolby Surround AC-3 Digital (second promotional name, as seen on early film releases, and on home audio equipment till about 1995/6 or so)
* Dolby Stereo Digital (first promotional name, as seen on early releases, also seen on True Lies LaserDisc)
* Dolby SR-Digital (when the recording incorporates a Dolby SR-format recording for compatibility)
* SR-D (an abbreviation of above)
* Adaptive Transform Coder 3 (relates to the bitstream format of Dolby Digital)
* AC-3 (an abbreviation of above)
* Audio Codec 3, Advanced Codec 3, Acoustic Coder 3 (These are backronyms. However, Adaptive TRansform Acoustic Coding 3, or ATRAC3, is a separate format developed by Sony)
* ATSC A/52 (name of the standard, current version is A/52 Rev. B)
2006-12-01 10:15:35 · answer #2 · answered by Dark Knight 3 · 2⤊ 0⤋
They should fit Dolby Noise Reduction, the button on tape players that made the red light come on. Didn't see the point in that really, but any button that turns a light on is generally a good one.
2006-12-01 10:08:57 · answer #3 · answered by randombushmonkey 3 · 0⤊ 0⤋
Dobly work best on high quality imputs. Most MP3 data is compressed an thus poor quality. dolby would have limited effect. Essentially, shite in shite out
2006-12-01 10:07:13 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Because the rubbish speakers/headphones destroy any enhancement Dolby would give.
2006-12-01 10:04:32 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Digital products don't need Dolby!
Ask for Pro Logic 5.1 surround for them and blow yourself away!
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2006-12-01 10:05:52 · answer #6 · answered by John H 4 · 0⤊ 1⤋
I that will be the next one out.
2006-12-01 10:04:18 · answer #7 · answered by Ollie 7 · 0⤊ 0⤋