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PostPosted: Tue Dec 09, 2014 8:57 pm 
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HamelnStock Survivor and Midi Guru
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http://www.mixonline.com/news/profiles/ ... ate/365968

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PostPosted: Mon Jan 19, 2015 9:19 pm 
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I'm gonna do more research. I wonder about the Bitrate differences. As far as I know, Frequency is the horizontal resolution, and bitrate is the verticle resolution


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PostPosted: Mon Jan 19, 2015 10:48 pm 
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Robbie The Botkiller
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Exactly.

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PostPosted: Mon Jan 19, 2015 11:01 pm 
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Robbie The Botkiller
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Here's my view on the "Are CD's good enough" discussion.

The human ear can catch anything between 20 Hz and 20 kHz. Give or take a margin. So, to have a decent frequency response, 20 kHz should still be output reliably.

There's a mathematica theorem (shannon) that states that you'll need at least to double the sampling frequency. This is required to be able to catch the minimum ánd the maximum of one singe wave. However, as always, timing is everything. Both samples could very well be taken exactly in the middle between minimum and maximum, timewise. In both cases you will see... zero. Completely losing the frequency.

A more practical approach would be the multiply the highest desired frequency by 5. In that case, you will still have a more or less decent response (CD audio starts to roll off audibly at as low as 8 kHz). So, if you want to be able to catch 20.000 waves in a second, you would need 100.000 samples. I believe that 96 kHz is an industry standard and that should be considered the very minimum.

So, when the specifications of a CD were defined, one should have chosen the end product to be at 96 kHz. However that was in 1978 and that meant a data throughput that was not feasible for what was to be a consumer product.

We all know that there are a number of steps between recording and writing to CD. Mixing and mastering require a lot of calculation and the finer the resolution is, the better. Reason is simple: each process will make the product lose data. So, for recording one should double the frequency of the end product. That's the only way to have a 96 kHz end product which is 100% effective in terms of data.

So, recording in 192 kHz, end product in 96 kHz.

Bit depth is a different story. I'd go for recording and processing in 32 bit, end product in 24 bit.

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PostPosted: Wed Jan 21, 2015 12:52 am 
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yeah, I don't know what the incentive would be but a new digital format might be pretty awesome.

I did see not too long ago that there are sort of portable audio players that can handle some pretty high specs.

I didn't bookmark it but if I can remember I'll post here.

Anybody have SACD's and an SACD player? I was thinking of getting one. I listen to a lot of classical music, oddly enough, on cassette.
A good cassette is pretty good.

over out!!!!!!!!

JDS


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PostPosted: Wed Jan 21, 2015 12:35 pm 
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my only questions are : Does the higher bitrate make the kettle for my tea boil quicker ?
: Does a higher frequency allow me to have two slices of cake instead of one ?

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PostPosted: Wed Jan 21, 2015 7:29 pm 
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HamelnStock Survivor and Midi Guru
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The article does not talk about a recording process but about playback. It was proven in a double blind test that in playback no-one can tell the difference between good Cd recordings and 'better' ones. robbie is right when he talks about 'catching' the wave while converting it from analog to digital but once you have done that it is not so difficult to create data that includes the top an bottom of the curve.

i think it is very important to go for high bit rates and frequencies while recording. Playback is a different process altogether. I notice that i get bette mp3 material out of a 96kHz recording that from a 44.1 regardles of the fact that i always mqke 320 Kbit mp3's.

How is that for ketlle, thea, cake or cheese ?

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PostPosted: Thu Jan 22, 2015 4:53 pm 
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BobbyMcK2 wrote:
my only questions are : Does the higher bitrate make the kettle for my tea boil quicker ?
: Does a higher frequency allow me to have two slices of cake instead of one ?



That's rather cheesy. :wink:

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PostPosted: Fri Jan 23, 2015 12:57 am 
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Robbie The Botkiller
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I think one of the harder choices in life is to choose between more cheese and better cheese.

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PostPosted: Sat Jan 31, 2015 10:09 pm 
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https://www.yahoo.com/tech/it-was-one-o ... 83039.html

here's the audio player I mentioned


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PostPosted: Sat Jan 31, 2015 10:27 pm 
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Sodbuster

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this is a spot on article about CDs VS. records.

I like CDs and I've never really had a vinyl collection. it's fun to sample vinyl because it has unique sound characteristics, but it's not higher quality I don't think.

http://www.laweekly.com/music/why-cds-m ... yl-5352162


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