[access-uk] Re: An Audio Question
- From: "Tristram Llewellyn" <tristram.llewellyn@xxxxxxxxxxxxxxxxxxx>
- To: <access-uk@xxxxxxxxxxxxx>
- Date: Thu, 3 Jul 2008 11:27:15 +0100
The way MP3 and many compressed formats work is through work done on the
normal human hearing response and the realisation that some information
can be reasonably discarded and left to the brain and hearing organs to
fill in to give you sound that is to all intents and purposes good
enough (for the majority of the hearing population). Most of this
hearing population will not care and would possibly not even hear the
difference unless a very good side by side comparison was made.
If you were then to mix an MP3 format with some sort of hearing loss
then it is possible that the losses of the hearer and those induced by
the coding scheme may interact in some way that is noticeable, perhaps
more so than as with normal hearing response for which the coding scheme
is modelled. Sepcificlally many of these schems are based on perceptual
coding where frequencies that are the same in the audio programme
material are discareded in the encoding process thereby reducing the
data stream, this is why MP3 might sound thinner or more "wishy washy"
than the original.
I listen quite a bit to AAC at about 256 kbits and this is pretty good
and I find quite tolerable but by no means perfect. However if you are
really keen on your hi-fi then this wouldn't be and you would be better
off with a really good CD player and electronics plus speakers.
Regards.
Tristram Llewellyn
Technical Support
Sight and Sound Technology
Welton House North Wing, Summerhouse Road, Moulton Park, NN3 6WD
Web : www.sightandsound.co.uk
Email: tristram.llewellyn@xxxxxxxxxxxxxxxxxxx
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________________________________
From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On Behalf
Of Steve Nutt
Sent: Wednesday, July 02, 2008 9:11 PM
To: access-uk@xxxxxxxxxxxxx
Subject: [access-uk] Re: An Audio Question
Hi Roger,
MP3 is never going to be as good as say, a CD, because it is compressed.
MP3 can sound very wishy-washy. In my view it is not great, and OGG
sound files are better, but many MP3 players won't play OGG files.
So MP3 is better than nothing, but by no means good in my view.
All the best
Steve
________________________________
From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On Behalf
Of roger.south
Sent: Wednesday 2 July 2008 15:46
To: access-uk@xxxxxxxxxxxxx
Subject: [access-uk] An Audio Question
Hi All
As most of you may be aware I have a severe hearing problem but manage
with the help of modern technology. I have just come across a post on
another list where a member is being less than complimentary about MP3
audio tracks. Describing them as "a wishy-washy substitute for sound
quality"
Out of curiosity is the fall of in quality converting to MP3 that so
very noticeable or is he exaggerating?
Roger
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