| Brandon Nelson wrote:
> I can't get many older orcs to work with the most recent perf3.47 on the Mac.
> How do I revert to using an older version of perf?
I've had the same problem. Version 3.47 doesn't seem to like any GEN
statements with even number sized tables, ie:
f1 0 1024 10 = Crash.
However:
f1 0 1025 10 = Works OK!
Maybe you are having the same problem?
Steve.
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Date: Sat, 21 Mar 1998 14:33:56 -0500 (EST)
From: Laszlo Vecsey
To: csound@maths.ex.ac.uk
Subject: two mics -> hrtf -> .wav file?
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Hi,
I'm using the windows version of csound that now supports realtime audio
input. I have two microphones set up in the room, is it possible to have
csound process the sound such that when its played back on headphones it
sounds 3D?
Also, another question.. have you ever noticed that when you record your
voice and play it back it tends to sound very different. I have a couple
theories for why this is, but perhaps someone else can explain. Could
csound filter similarly so that the resulting output is the way you hear
it as you speak?
- lv
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Date: Sat, 21 Mar 1998 20:47:28 -0400
To: csound@maths.ex.ac.uk
From: Nicola Di Vito
Subject: Help for a Csound beginner
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Y work on a Mac SE/30 20 M of RAM, System 7.5.5; every time Y try to open
Cecilia Y invariably get "error type -192"; Y read often in this Forum of a
program named "midi2csound" for transferring Midi files in score files,
were Y could find it and is it good for my machine?
And, finally, what do you think of Dmix? and in your long and interesting
debate on sound synthesis languages why nobody mentioned it ?
Addres: Nicola Di Vito
V. G. Giulietti 21 00154-Roma Italy
Phone Number: +39 6 5781874
email: N.divito.@agora.stm.it
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Date: Sat, 21 Mar 1998 14:56:11 -0500
From: Jean Piche
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To: Nicola Di Vito , csound
Subject: Re: Help for a Csound beginner
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Nicola Di Vito wrote:
>
> Y work on a Mac SE/30 20 M of RAM, System 7.5.5; every time Y try to open
> Cecilia Y invariably get "error type -192";
Cecilia only run on PPC Macintoshes...
> Y read often in this Forum of a
> program named "midi2csound" for transferring Midi files in score files,
> were Y could find it and is it good for my machine?
> And, finally, what do you think of Dmix? and in your long and interesting
> debate on sound synthesis languages why nobody mentioned it ?
Because DMix is not a sound synthesis language. It is a scoring/composition
system.
--
________________________________________________________
Jean Piche
Universite de Montreal
http://mistral.ere.umontreal.ca/~pichej
http://www.musique.umontreal.ca/electro/CEC/
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Date: Sat, 21 Mar 1998 18:16:08 -0600
From: pete moss
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To: Laszlo Vecsey , csound
Subject: Re: two mics -> hrtf -> .wav file?
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i dont know about how to filter the voice. but i can tell you why it sounds
like this. it is because the vibration of your voice takes place in your
body and head. the interior of your ears are picking up two versions of
your voice - the way it sounds on the exterior and the way it sounds on the
interior. i think the effect of the sound of the interior voice is called
bone conduction because the vibrations are conducted to your ears by bones
and tissue.
pete
Laszlo Vecsey wrote:
> Also, another question.. have you ever noticed that when you record your
> voice and play it back it tends to sound very different. I have a couple
> theories for why this is, but perhaps someone else can explain. Could
> csound filter similarly so that the resulting output is the way you hear
> it as you speak?
>
> - lv
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From: pete moss
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To: Laszlo Vecsey , csound
Subject: Re: two mics -> hrtf -> .wav file?
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sorry, forgot to answer first question.
if the mics are set up the way the ears are then the resulting combined
signal will sound very 3d. you just need two variables, the angle between
the mics and ( i dont know a good value for this ( perhaps around 90
degrees)) the distance between the mic heads. i think around 8 or 9 inches
is good. ( 17.6 cm - 19.8 cm for you internationals out there).
try different locations near or far from your source the get different
levels of natural reverb. closer gives more source, less reverb. further
away gives more reverb mixed with the source sound.
i have a stereo dat mic that gives the best stereo response ive ever heard.
it is an audio-technica at822 stereo mic for those interested.
pete
Laszlo Vecsey wrote:
> Hi,
>
> I'm using the windows version of csound that now supports realtime audio
> input. I have two microphones set up in the room, is it possible to have
> csound process the sound such that when its played back on headphones it
> sounds 3D?
>
> Also, another question.. have you ever noticed that when you record your
> voice and play it back it tends to sound very different. I have a couple
> theories for why this is, but perhaps someone else can explain. Could
> csound filter similarly so that the resulting output is the way you hear
> it as you speak?
>
> - lv
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From: rasmus ekman
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Laszlo Vecsey wrote:
>
> input. I have two microphones set up in the room, is it possible to have
> csound process the sound such that when its played back on headphones it
> sounds 3D?
Isn't hrtfer meant for placing one signal in the (virtual head) space?
You wouldn't need two mikes for that. Also I *think* it's too demanding
to allow real-time processing on a normal home computer.
But recording a good stereo image will often be as realistic as you
need, and it doesn't have to be hard to do if you have reasonable mikes.
> Also, another question.. have you ever noticed that when you record your
> voice and play it back it tends to sound very different. /.../ Could
> csound filter similarly so that the resulting output is the way you hear
> it as you speak?
This effect has two main reasons.
First, the voice reverberates the whole head. Compare when you put a tuning
fork to your head, or speak holding your hands over your ears: Sound travels
very well through the bones.
Second, the higher frequencies are filtered out from one's own voice.
High-pitched sound cannot bend around the head so well, so the lower
frequencies dominate in your own voice.
A similar effect is also present for the skull reverberations (I imagine):
The high-pitched noisy material in the voice form in the mouth, while the
low and mid-freq's are much stronger, being the base material which is
generated in the throat.
Don't know a fixed recipy for simulating these effects in a recorded sound,
but try playing around with normal filters.
Regards,
re
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