POV-Ray : Newsgroups : povray.off-topic : It's that tocatta again... Server Time
7 Sep 2024 03:22:05 EDT (-0400)
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From: Invisible
Subject: Re: It's that tocatta again...
Date: 3 Oct 2008 04:37:31
Message: <48e5d9cb$1@news.povray.org>
m_a_r_c wrote:

>> 2. You really can't record bass notes, can you?
> Why couldn't you? With good microphones you can record very low  frequencies 
> (you need excellent speakers to reproduce them though)

Almost all the videos on YouTube, the intro sounds fairly OK, but as 
soon as the bass comes in the sound becomes distorted as hell.

I guess camcorder microphones aren't so hot? ;-)

>> 5. Oohhh, so *that's* how you change volume on an organ? You use a 
>> different manual?
> There are other way as putting some of the pipe sets in a box with mobile 
> walls

Mmm, interesting.

>> 6. What are all the metal spikey things dotted around the foot pedels?
> 
> A SAM battery to dissuade the player from playing wrong notes (never hear of 
> Stalin's Organs?)

o_O

> No seriousely there are foot commanded stops

...foot commanded stops...?!

>> Try and stop me, ******s! >:-D
> LOL I hope you do it

That makes two of us... ;-)


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From: m a r c
Subject: Re: It's that tocatta again...
Date: 3 Oct 2008 08:21:05
Message: <48e60e31$1@news.povray.org>

48e5d9cb$1@news.povray.org...
> Almost all the videos on YouTube, the intro sounds fairly OK, but as soon 
> as the bass comes in the sound becomes distorted as hell.
>
> I guess camcorder microphones aren't so hot? ;-)

I  meant large membrane condenser professional microphones.
like http://www.sonicstate.com/news/shownews.cfm?newsid=5303
They are rather heavy and very sensitive
You can't have those mounted on hand held camcorders :-)
In addition, youtube files are the most often heavily compressed with a big 
loss of quality.
Don't forget the last link of the chain : end listener speakers.
I you listen on mean multi-media speaker, don't wonder why you don't hear 
32' pipes fundamental frequencies :-)
>
>>> 5. Oohhh, so *that's* how you change volume on an organ? You use a 
>>> different manual?
>> There are other way as putting some of the pipe sets in a box with mobile 
>> walls
>
> Mmm, interesting.

http://en.wikipedia.org/wiki/Swell_box

>
>>> 6. What are all the metal spikey things dotted around the foot pedels?
>>
>> A SAM battery to dissuade the player from playing wrong notes (never hear 
>> of Stalin's Organs?)
>
> o_O
>
>> No seriousely there are foot commanded stops
>
> ...foot commanded stops...?!

Didn't you notice that your hands are sometimes rather busy while playing 
organ ?

Marc


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From: Invisible
Subject: Re: It's that tocatta again...
Date: 3 Oct 2008 08:52:58
Message: <48e615aa$1@news.povray.org>
>> I guess camcorder microphones aren't so hot? ;-)
> 
> I meant large membrane condenser professional microphones.

Yeah. But a lot of the YouTube videos seem to be somebody playing on an 
organ in their house or their local church, recorded using home video 
equipment. Clearly such equipment doesn't cope well with such loud, 
powerful sounds.

The CD recordings I've heard, on the other hand, usually sound just 
fine. Clearly the result of better equipment and trained professionals 
who know how to set it up right. ;-)

> In addition, youtube files are the most often heavily compressed with a big 
> loss of quality.

Many of the recordings sound like they're simply clipping due to the 
extreme volume.

> Don't forget the last link of the chain : end listener speakers.
> I you listen on mean multi-media speaker, don't wonder why you don't hear 
> 32' pipes fundamental frequencies :-)




> http://en.wikipedia.org/wiki/Swell_box

Ooo...

>>> No seriousely there are foot commanded stops
>> ...foot commanded stops...?!
> 
> Didn't you notice that your hands are sometimes rather busy while playing 
> organ ?

Heh. Well yes. Like I said, I assumed that's why all organs seem to have 
at least 2 manuals on them - you you can configure them at different 
stops before you start playing...


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From: m a r c
Subject: Re: It's that tocatta again...
Date: 3 Oct 2008 09:47:59
Message: <48e6228f@news.povray.org>

48e615aa$1@news.povray.org...
>>> I guess camcorder microphones aren't so hot? ;-)
>>
>> I meant large membrane condenser professional microphones.
>
> Yeah. But a lot of the YouTube videos seem to be somebody playing on an 
> organ in their house or their local church, recorded using home video 
> equipment. Clearly such equipment doesn't cope well with such loud, 
> powerful sounds.
Or  users don't know or don't bother to set the record level.
OTOH automatic level is not better : it produces a 'pumping' artifact : loud 
sounds get gain lower so background  sounds may have unnatural level changes
>
> The CD recordings I've heard, on the other hand, usually sound just fine. 
> Clearly the result of better equipment and trained professionals who know 
> how to set it up right. ;-)

Indeed :-)
>


Not so bad I guess :-) but did you actually try to hear sounds below 30Hz 
with them?
Remember that the fundamental frequency of a 32' open pipe (or a 16' closed 
one) is about 16Hz !
Usually the very low frequency band is percieved more by chest and belly 
than by ears
Human ear is usually said to percieve sounds down to 20Hz and I suspect even 
good headphones can't reproduce such low frequencies simply because their 
resonance frequency is higher

> Heh. Well yes. Like I said, I assumed that's why all organs seem to have 
> at least 2 manuals on them - you you can configure them at different stops 
> before you start playing...

On modern or modernized organs with electric, electronic or even pneumatic 
key actions that are versatile, that may be true... but old organs with 
mechanic actions from keys to pipes had their manuals dedicated to different 
sections with for each a limited choice in stops selections.
Do you want stops and manuals? 
http://en.wikipedia.org/wiki/Image:Usnaconsole2.jpg

Marc


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From: Invisible
Subject: Re: It's that tocatta again...
Date: 3 Oct 2008 09:58:24
Message: <48e62500$1@news.povray.org>



> Not so bad I guess :-) but did you actually try to hear sounds below 30Hz 
> with them?

Actually no. But the headphones certainly produce far more bass than my 
speakers do.

> Remember that the fundamental frequency of a 32' open pipe (or a 16' closed 
> one) is about 16Hz !

Doesn't necessarily mean the pipes generate any significant energy at 
their fundamental. ;-)

> Usually the very low frequency band is percieved more by chest and belly 
> than by ears
> Human ear is usually said to percieve sounds down to 20Hz and I suspect even 
> good headphones can't reproduce such low frequencies simply because their 
> resonance frequency is higher

By sound card, amplifier and headphones are all "rated" to do 20 Hz - 20 
kHz. Of course that only means the system has a meaningful amount of 
gain in that range; I'm sure frequencies outside it do register a little.

But clearly, no stereo system is likely to shake the building like a 
real pipe organ can - much to my neighbor's relief! ;-)

(BTW... if your headphones *have* a "resonant frequency", the designers 
did something wrong.)

> Do you want stops and manuals? 
> http://en.wikipedia.org/wiki/Image:Usnaconsole2.jpg

o_O

It looks like it would take 3 people to play it...!


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From: Invisible
Subject: Re: It's that tocatta again...
Date: 3 Oct 2008 10:11:34
Message: <48e62816@news.povray.org>
>> ...foot commanded stops...?!
> 
> Didn't you notice that your hands are sometimes rather busy while playing 
> organ ?

http://en.wikipedia.org/wiki/Organ_shoes

Oh... my god...


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From: Invisible
Subject: Re: It's that tocatta again...
Date: 3 Oct 2008 10:18:36
Message: <48e629bc$1@news.povray.org>
m_a_r_c wrote:

> Do you want stops and manuals? 
> http://en.wikipedia.org/wiki/Image:Usnaconsole2.jpg

How about this?

http://en.wikipedia.org/wiki/Image:ConsoleOrgueWanamaker.jpg


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From: Invisible
Subject: Re: It's that tocatta again...
Date: 3 Oct 2008 11:02:31
Message: <48e63407@news.povray.org>
Orchid XP v8 wrote:

> What will tomorrow bring?
> 
> Well, actually, I'm kinda hoping that tomorrow or some day near it is 
> going to involve me playing this bitchin' tocatta on a real pipe organ. 
> Cos *damn*, that would be pretty sweet, eh?

Ooo... look at this:

http://npor.emma.cam.ac.uk/xnpor.shtml

I just sound some pictures of the pipe organ in MK's largest church. :-D 
(Actually, it looks like a pretty lame organ to be honest...) And hey, 
it even tells me the names of the organ stops. (!!) o_O


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From: Darren New
Subject: Re: It's that tocatta again...
Date: 3 Oct 2008 12:29:14
Message: <48e6485a@news.povray.org>
Invisible wrote:
> I guess camcorder microphones aren't so hot? ;-)

My guess would have been the compression, actually.

-- 
Darren New / San Diego, CA, USA (PST)


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From: Orchid XP v8
Subject: Re: It's that tocatta again...
Date: 3 Oct 2008 13:01:50
Message: <48e64ffe$1@news.povray.org>
>> I guess camcorder microphones aren't so hot? ;-)
> 
> My guess would have been the compression, actually.

Compression tends to garble the trebble, but this actually sounds like 
the microphones simply maxing out due to the extreme volume. Seriously, 
it sounds like a lawnmower rather than a musical instrument.

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*


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