|
"Matt J. Ingalls" wrote:
> > I'm having some trouble using the 'rescale to 24 bit' function in
> > Csound. This doesn't seem to write the right header (i.e. it writes a
> > 16-bit header). Does anyone else have this problem?
>
> > what are you using to read the 24 bit file? (csound doesnt support
> > 24-bit-in!)
>
> > -matt
I'm trying to read them into Cubase 4.0/24 which should be able to read 24
bit, I'm sure!
The same goes for Peak 2.0, the problem is that neither cubase nor peak
recognizes the file as 24 bit, instead it thinks it's a 16 bit file, which
results in a lot of junk. Even Csound's sndinfo utility recognizes the
file as 16 bit (which it obviously isn't!).
I hope this state's the problem a bit clearer, and hope anyone can help.
thanx Fokke.
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From: jpff@maths.bath.ac.uk
To: andrew__lyons@hotmail.com
CC: csound@maths.ex.ac.uk
In-reply-to: <19990507084434.86541.qmail@hotmail.com> (message from Andrew
Lyons on Fri, 07 May 1999 18:44:34 EST)
Subject: Re: pvanel file format
References: <19990507084434.86541.qmail@hotmail.com>
Date: Fri, 7 May 99 14:18:11 BST
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If you look at the pvanal_export.c program the format is reasonably
well explained..... well not really....the following is from pvoc.h
==John ff
PS: Welcome!
========================================================================
#define PVMAGIC 517730 /* look at it upside-down, esp on a 7-seg display */
#define PVDFLTBYTS 4
typedef struct pvstruct
{
long magic; /* magic number to identify */
long headBsize; /* byte offset from start to data */
long dataBsize; /* number of bytes of data */
long dataFormat; /* (int) format specifier */
float samplingRate; /* of original sample */
long channels; /* (int) mono/stereo etc */
long frameSize; /* size of FFT frames (2^n) */
long frameIncr; /* # new samples each frame */
long frameBsize; /* bytes in each file frame */
long frameFormat; /* (int) how words are org'd in frms */
float minFreq; /* freq in Hz of lowest bin (exists) */
float maxFreq; /* freq in Hz of highest (or next) */
long freqFormat; /* (int) flag for log/lin frq */
char info[PVDFLTBYTS]; /* extendable byte area */
} PVSTRUCT;
#define PV_UNK_LEN -1L /* flag if dataBsize unknown in hdr */
/* values for dataFormat field */
#define PVSHORT 2 /* 16 bit linear data */
#define PVLONG 4 /* 32 bit linear data */
#define PVFLOAT (4+32) /* 32 bit float data */
#define PVDOUBLE (8+32) /* 64 bit float data */
/* values for frameFormat field */
#define PVMAG 1 /* magnitude only */
#define PVPHASE 2 /* phase only (!) */
#define PVPOLAR 3 /* mag, phase pairs */
#define PVREAL 4 /* real only */
#define PVIMAG 5 /* imaginary only */
#define PVRECT 6 /* real, imag pairs */
#define PVPVOC 7 /* weirdo mag, phi-dot format for phase vocoder */
#define PVCQ 32 /* ORed with previous to indicate one frame per 8ve */
/* values for freqFormat field */
#define PVLIN 1 /* linearly spaced frequency bins */
#define PVEXP 2 /* exponentially spaced frequency bins */
/* Some handy typedefs (one anyway) */
typedef struct {
float mag, pha;
} cpxpolar;
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Date: Fri, 7 May 1999 20:17:51 +0200
To: Csound list
From: Gary Berger
Subject: Call for works
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Call for works for the concert season of 1999/2000
The Swiss Center for Computer Music (SCCM) requests submission of musical works
for tape, solo instrument and tape and solo instrument combined with live
electronics.
Please send DATs or CDs of your electroacoustic music
together with some biographical informations and a programe note to the
address below. Pieces with a maximum duration of 10 minutes are prefered.
If you would like to send a selection of your work, please feel free to do so.
Works for video may also be considered.
All works not selected for the concerts will be saved in the SCCM-archive
and possibly considered for future events.
Deadline: Please submit your compositions until July 1st, 1999.
Thank you for your participation. With kind regards
The Swiss Center for Computer Music
Send your compositions and requests for additional information to:
Gary Berger
Swiss Center for Computer Music
Elisabethenstrasse 3
8004 Zurich
Switzerland
E-mail: gberger@computermusic.ch
http://www.computermusic.ch
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Date: Fri, 7 May 1999 14:42:03 -0400
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From: Paul Barton-Davis
To: csound@maths.ex.ac.uk
Subject: enveloping with function tables
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am i missing something, or is there no standalone opcode similar to
tableseg, that reads a function table and generations a krate output
to be used in a fashion similar to linseg ?
i just added the functionality of "spliner" to quasimodo, allowing me
to draw function tables, either as splines or line segments, and i want
to use this to setup complex sound envelopes. tablei doesn't seem
right, because it doesn't interpolate across time.
perhaps i'm just not seeing the right opcode ...
--p
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To: csound@maths.ex.ac.uk
Subject: Re: enveloping with function tables
In-reply-to: Your message of "Fri, 07 May 1999 14:42:03 EDT."
<199905071842.OAA01865@op.net>
Date: Fri, 07 May 1999 17:28:41 -0400
From: Paul Barton-Davis
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In message <199905071842.OAA01865@op.net>you write:
>am i missing something, or is there no standalone opcode similar to
>tableseg, that reads a function table and generations a krate output
>to be used in a fashion similar to linseg ?
>
>perhaps i'm just not seeing the right opcode ...
ah, it seems that oscil1 is the right answer ...
--p
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From: Hans Mikelson
To: Paul Barton-Davis , csound@maths.ex.ac.uk
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Subject: Re: enveloping with function tables
Date: Fri, 7 May 1999 18:33:42 -0500
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>am i missing something, or is there no standalone opcode similar to
>tableseg, that reads a function table and generations a krate output
>to be used in a fashion similar to linseg ?
I think this is usually done using oscil with frequency set to 1/p3.
Hans Mikelson
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Date: Fri, 07 May 1999 19:37:05 -0400
From: "Job M. van Zuijlen"
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One approach you may want to investigate is the so-called "gyrator",
which is an active circuit that simulates an inductor. I built one, hm,
maybe 30 years ago, but I would have to look if I can find the circuit
diagram somewhere. It used standard transistors, resistors and
condensers. A nice feature of the gyrator is that it is possible to
achieve a very narrow bandwidth (high Q) without oscillation. Nice for
all kinds of bell sounds. It is tunable. I found the following
definition of gyrator:
gyrator filters
===============
Term used to describe a class of active filters using gyrator networks.
Gyrator is the name given for RC networks that mimic inductors. A
gyrator is a form of artificial inductor where an RC filter synthesizes
inductive characteristics. Used to replace real inductors in filter
design.
If I find the circuit and you still need it I can probably scan it in
and e-mail it to you.
Hope this helps.
Job van Zuijlen
Anders Andersson wrote:
>
> Hello!
>
> I'm quite a newbie with electronics, but I still would like to try some
> things out..
>
> For a project I need a *very* narrow BP-filter (fixed frequency, but still
> adjustable so that I could have several modules with different frequency).
> It does not have to be "noisefree".
>
> Is it possible to construct in many ways, or are there some general rule you
> always use when building BP-filters?
>
> What would be the best way in this case?
> (I want to know what things I should read moe about, and what I can skip)
>
> // Anders |