How can I tell music has been an MP3? Quantitative Measurement of Fidelity
 

In article ,
Don Pearce wrote:
Transmitting material deliberately tweaked for a poor listening
environment is rather a two edged sword, though. The car radio could
have a compressor built in if that's the sound you want rather than
inflicting it on all listeners. Indeed part of the spec of DAB included
such a device although I've not known it be implemented.

It is implemented on my Arcam DAB receiver. Problem is that it is in
my home, and I don't need to use it there.

Right. How well does it work, out of interest?

My car radio will alter the level taking into account background noise,
though. And eq the speakers using the same microphone as sensor - if you
want. Haven't tried either yet as the mic isn't supplied as standard.

It wouldn't work if it were fitted. It would equalise to where the mic
is, not where you are, and they will have vastly different frequency
response errors, particularly in a car.

The idea is you put the mic where your head is when doing the auto eq then
save the settings. But you aren't then forced to use them - it will store
several different settings which may be manually set and recalled. But
like all such things I've settled on flat with a small amount of LF lift
to counteract tyre rumble etc.

--
*Generally speaking, you aren't learning much if your lips are moving.*

Dave Plowman London SW
To e-mail, change noise into sound.

How can I tell music has been an MP3? Quantitative Measurement of Fidelity
 

On Sat, 23 Jun 2007 14:45:41 +0100, "Dave Plowman (News)"
wrote:

In article ,
Don Pearce wrote:
Transmitting material deliberately tweaked for a poor listening
environment is rather a two edged sword, though. The car radio could
have a compressor built in if that's the sound you want rather than
inflicting it on all listeners. Indeed part of the spec of DAB included
such a device although I've not known it be implemented.

It is implemented on my Arcam DAB receiver. Problem is that it is in
my home, and I don't need to use it there.

Right. How well does it work, out of interest?

Quite well, I would say. I tried the radio in the laundry room to see
how it would cope with the noise of the tumble drier, and it made a
pretty good job of staying audible.

My car radio will alter the level taking into account background noise,
though. And eq the speakers using the same microphone as sensor - if you
want. Haven't tried either yet as the mic isn't supplied as standard.

It wouldn't work if it were fitted. It would equalise to where the mic
is, not where you are, and they will have vastly different frequency
response errors, particularly in a car.

The idea is you put the mic where your head is when doing the auto eq then
save the settings. But you aren't then forced to use them - it will store
several different settings which may be manually set and recalled. But
like all such things I've settled on flat with a small amount of LF lift
to counteract tyre rumble etc.

Ah - ok. I thought maybe it was some fixed position thing you clipped
on a sun visor, or something.

d

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

How can I tell music has been an MP3? Quantitative Measurement of Fidelity
 

Ty Ford wrote in :

On the indie market, it's also because the recording talent too frequently
can't tell the difference between "Ouch" and "Nice."

Funny you should say that ...

I now shoot and edit video for a part of my living.

Gotta' nice handheld piece shot last week

This isn't what I'd call "nice," really not. I didn't sit through the
whole piece though, because your swaying all over the place was too
annoying to watch.

So, yeah, some people obviously can't tell the difference between "Ouch"
and "Nice."

m

How can I tell music has been an MP3? Quantitative Measurement of Fidelity
 

In article , Don Pearce
wrote:
On Sat, 23 Jun 2007 14:45:41 +0100, "Dave Plowman (News)"
wrote:

In article , Don Pearce
wrote:
Transmitting material deliberately tweaked for a poor listening
environment is rather a two edged sword, though. The car radio could
have a compressor built in if that's the sound you want rather than
inflicting it on all listeners. Indeed part of the spec of DAB
included such a device although I've not known it be implemented.

It is implemented on my Arcam DAB receiver. Problem is that it is in
my home, and I don't need to use it there.

Right. How well does it work, out of interest?

Quite well, I would say. I tried the radio in the laundry room to see
how it would cope with the noise of the tumble drier, and it made a
pretty good job of staying audible.

Are you referring to the 'Dynamic Range Control' system of DAB?

If so, which stations are you referring to above?

My understanding is that DRC is nominally a common factor for DAB
receivers, but I don't which (if any) broadcasters actually use it.

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

How can I tell music has been an MP3? Quantitative Measurement of Fidelity
 

On 2007-06-23, Markus Mietling wrote:
Ty Ford wrote in :

On the indie market, it's also because the recording talent too frequently
can't tell the difference between "Ouch" and "Nice."

Funny you should say that ...

I now shoot and edit video for a part of my living.

Gotta' nice handheld piece shot last week

This isn't what I'd call "nice," really not. I didn't sit through the
whole piece though, because your swaying all over the place was too
annoying to watch.

So, yeah, some people obviously can't tell the difference between "Ouch"
and "Nice."


The sound was nice, though, as those things go. 8-)

--
Mickey

Fast, reliable, cheap. Pick two and we'll talk. -- unknown


----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups
---= East/West-Coast Server Farms - Total Privacy via Encryption =---

How can I tell music has been an MP3? Quantitative Measurement of Fidelity
 

In article ,
Don Pearce wrote:
The idea is you put the mic where your head is when doing the auto eq
then save the settings. But you aren't then forced to use them - it
will store several different settings which may be manually set and
recalled. But like all such things I've settled on flat with a small
amount of LF lift to counteract tyre rumble etc.

Ah - ok. I thought maybe it was some fixed position thing you clipped
on a sun visor, or something.

I've not really read the instructions as the manual is like a telephone
directory, but that might be a decent place when using it for simply
altering the level according to the background noise - it can use the same
mic.

--
*Sometimes I wake up grumpy; Other times I let him sleep.

Dave Plowman London SW
To e-mail, change noise into sound.

How can I tell music has been an MP3? Quantitative Measurement of Fidelity
 

In article ,
Ty Ford wrote:
Gotta' nice handheld piece shot last week for singer/songwriter friend
Randall Williams. He saw mine and wanted something up on YouTube.

You can see/hear it at:

http://www.youtube.com/watch?v=sDjKgmMydF4

'Nice' hand held? To me, hand held means slight movement to simulate what
the eye sees. Yours appears to be moving the camera for the sake of it. I
was taught any camera moves that grab the eye are bad moves - it suggests
the subject material is too boring on its own. Of course such techniques
are all too common these days and obviously loved by meja types who have
no interest in presenting a subject intelligently.

--
*(on a baby-size shirt) "Party -- my crib -- two a.m

Dave Plowman London SW
To e-mail, change noise into sound.

How can I tell music has been an MP3? Quantitative Measurement of Fidelity
 

"Ty Ford" wrote in message
. ..
On Sat, 23 Jun 2007 07:13:28 -0400, Keith G wrote
(in article ):


"Colin B." wrote


I'd suggest that this isn't a recent phenomenon. I've got plenty of
pop
vinyl from the 1970s and 1980s that has roughly no dynamics.



Yep, you bought it so *they* kept on supplying it - same thing's
happening today, apparently. Where's the problem?


Making crap
sound louder on the radio at the complete expense of quality is
decades old.


Compressed audio like 'Classic FM' on a car radio works very well,
actually....



Not so well when they play MP3 versus CD cuts. Locally, the oldies
station
WZBA has enough crunch on their MP3s that I can't really crank a CCR
tune as
loud as I want in the car because the distortion stops me. That's just
a buzz
kill. (could be another problem in their audio chain, but I don't
think so.)


Once again, I didn't spot the crossposting!!

I should have said: In the UK, Classic FM don't sound too bad on the car
radio!! (I see others have said that we don't broadcast from lo-res MP3s
in the UK??)

How can I tell music has been an MP3? Quantitative Measurement of Fidelity
 

In article , Ty Ford
writes
On Sat, 23 Jun 2007 07:13:28 -0400, Keith G wrote
(in article ):


"Colin B." wrote


I'd suggest that this isn't a recent phenomenon. I've got plenty of
pop
vinyl from the 1970s and 1980s that has roughly no dynamics.



Yep, you bought it so *they* kept on supplying it - same thing's
happening today, apparently. Where's the problem?


Making crap
sound louder on the radio at the complete expense of quality is
decades old.


Compressed audio like 'Classic FM' on a car radio works very well,
actually....



Not so well when they play MP3 versus CD cuts. Locally, the oldies station
WZBA has enough crunch on their MP3s that I can't really crank a CCR tune as
loud as I want in the car because the distortion stops me. That's just a buzz
kill. (could be another problem in their audio chain, but I don't think so.)


The problem with radio processing is that MP3's and other data reduced
sources do not process very well. Its akin to taking a 2 M photo and
expanding it up and then comparing it to a 10 M

Least radio 3 use linear PCM for their source audio, some other
broadcasters don't see it that way!.

And Klassick 'eff em is too far processed anyway!..

--
Tony Sayer

How can I tell music has been an MP3? Quantitative Measurement of Fidelity
 

In article .com, Dave
writes
On 23 Jun, 03:43, "Richard Crowley" wrote:
"Dave" wrote ...

, "Richard Crowley" wrote:
1) SNR is not "an accepted measurement of fidelity"
2) There is no specific "accepted measurement of fidelity"
"Fidelity" is a combination of many things. Some subjective.
3) It would be difficult-to-impossible to actually meausre SNR
on a commercial CD because of the way they are mastered.
(i.e. there is no "baseline" because it is usually muted)
Have there been no bright PhD students sponsored by the music
industry, or are they too busy with their revenue stream? The noise
is what is not the notes. For a symphony you have an idea of what the
notes should be, because you have the sheet music, and you know what a
violin, flute etc should sound like. You may be able to measure
something more because that is what the brain does.

That is just impossibly simplistic. There is a great deal of stuff
"between the notes" besides noise. Have you done much
recording yourself?
It doesn't sound as complicated as fusion, and that is having billions
spent on it. Besides I thought banks and defence liked graduates with
in-depth signal analysis experience.

I have listened to plenty of CD (about 650), so I think I can tell a
good recording from a bad one. There may be problems of course with
quantative measurement, in that the recording could be done to get the
measurement
high, and it could just sound clinical.

The point was that if I thought a CD sounded poor quality I think
there should be a computer program to confirm this, instead of just
asking someone else.


Oddly enough I've been out an about to some live events recently and the
sound there and at home ..I always want to twiddle something to make it
sound how I think it should be rather then what it is;)

--
Tony Sayer