In article , Gareth Halfacree
wrote:
Rob wrote:
I'd never thought of that 33s at 45 ruse to save time - does it
actually degrade quality?

Indeed it does.

If you run your 33s at 45 RPM, then every second of captured audio
contains 32,340 samples. Because these are played back at the rate of
44,100 samples per second it sounds too fast, so you have a choice of
either dropping the sample rate to 32,000 (32KHz, often referred to as
'Radio Quality' in older Windows applications)

Yes. I've not checked the URL but if they don't make a suitable correction,
then replying a 33 at 45 would also mean the standard RIAA correction would
be inappropriate, thus altering the frequency response. May also encounter
problems with the stylus being able to track the increased modulation
velocities, etc.

In principle, the above could be corrected during the resampling from 33k
up to 44.1k, but as you say, the result would still lose any info above
16kHz.

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html

Jim Lesurf wrote:
I've not checked the URL but if they don't make a suitable correction,
then replying a 33 at 45 would also mean the standard RIAA correction would
be inappropriate, thus altering the frequency response. May also encounter
problems with the stylus being able to track the increased modulation
velocities, etc.

In principle, the above could be corrected during the resampling from 33k
up to 44.1k, but as you say, the result would still lose any info above
16kHz.

I have *no* idea what you just said. As I mentioned, I'm a computer
tech - to me, the RIAA is the buggers wot sue the filesharers. That
said, you seem to be agreeing with me so I'm not too bothered.

Now, if you'll excuse me I'm off to my search engine of choice to bone
up on RIAA and the frequency response of vinyl playback. Any
recommended sites where I can grasp the basics? I'm always keen to
learn something new.

--
Gareth Halfacree
http://gareth.halfacree.co.uk

On Fri, 26 May 2006 15:01:56 +0100, Gareth Halfacree
wrote:

Jim Lesurf wrote:
I've not checked the URL but if they don't make a suitable correction,
then replying a 33 at 45 would also mean the standard RIAA correction would
be inappropriate, thus altering the frequency response. May also encounter
problems with the stylus being able to track the increased modulation
velocities, etc.

In principle, the above could be corrected during the resampling from 33k
up to 44.1k, but as you say, the result would still lose any info above
16kHz.

I have *no* idea what you just said. As I mentioned, I'm a computer
tech - to me, the RIAA is the buggers wot sue the filesharers. That
said, you seem to be agreeing with me so I'm not too bothered.

Now, if you'll excuse me I'm off to my search engine of choice to bone
up on RIAA and the frequency response of vinyl playback. Any
recommended sites where I can grasp the basics? I'm always keen to
learn something new.

Don't use Google, then. If you do, both Ebay and Amazon will assure
you that they can sell you RIAA at the lowest prices.

d

--
Pearce Consulting
http://www.pearce.uk.com

Don Pearce wrote:
On Fri, 26 May 2006 15:01:56 +0100, Gareth Halfacree
wrote:
Now, if you'll excuse me I'm off to my search engine of choice to bone
up on RIAA and the frequency response of vinyl playback. Any
recommended sites where I can grasp the basics? I'm always keen to
learn something new.

Don't use Google, then. If you do, both Ebay and Amazon will assure
you that they can sell you RIAA at the lowest prices.

Not on my PC they don't. There's a.... checks headers to ensure he's
not in the Monastery before unleashing UI There's a rather nifty plugin
for my particular browser which removes *all* ads and paid-for
'recommendations' from Google. And adds a bar of links to perform the
same search on a raft of competing sites.

Makes searching for information a near-pleasure, it does.

--
Gareth Halfacree http://gareth.halfacree.co.uk
"If Ace Books ever came out with an edition of The Bible, both books
would be edited down to 40,000 words, and they'd be renamed "Master of
Chaos" and "The Thing With Three Souls." - Terry Carr