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vrf Wav file

Question asked by VRFuser on Oct 9, 2003
Latest reply on Oct 11, 2003 by hansolofalcon

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Thanks for the .Wav file answers. Now for me to get to work...

bern muller

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8 Replies

VRFuser Oct 9, 2003 2:43 AM
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VEE is capable of being a very good arbitrary waveform generator. Is there a
way to write a generated waveform to a .wav file? I recall a similar
question a couple years ago, but didn't save it, and can't find it now.

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VRFuser Oct 9, 2003 7:52 AM
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> VEE is capable of being a very good arbitrary waveform generator. Is there
a
> way to write a generated waveform to a .wav file? I recall a similar
> question a couple years ago, but didn't save it, and can't find it now.

>From my notes on the subject:

===============

A WAV file consists of several blocks called chunks.
They all have the format:
ChunkID    : 4 Chars
ChunkSize : Long Integer
ChunkData : ChunkSize Bytes

All chunks are surrounded by the RIFF-chunk, which is a bit
different:
ChunkID   : "RIFF"
ChunkSize : LongInt
Magic     : "WAVE"
list of chunks

Format Chunk:
ChunkID   : "fmt "
ChunkSize : 16
ChunkData :
    FormatTag       : Int16 (1=PCM Format)
    nChannels       : Int16
    nSamplesPerSec : Int32
    nAvgBytesPerSec : Int32
    nBlockAlign     : Int16
    nBitsPerSample : Int16

PCM Data Chunk:
ChunkID   : "data"
ChunkSize : nSamples * nBitsPerSample div 8
              * nChannels
ChunkData :
    1. sample left channel (8 or 16 bit)
    1. sample right channel (only if stereo)
    2. samples ...

Info Chunk:
ChunkID   : "LIST"
ChunkSize :
ChunkData : Information

==========

I don't have a VEE program to do this, but that shouldn't be too difficult
to do.

Les Hammer

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g.nied Oct 9, 2003 4:44 PM
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I am trying to print to a labeler through VEE.
Using the print I/O I can get the information to the printer,
however it does not start the labeler at the time of interaction.
I have tried using f to form feed with no success.
If I exit the program the data is printed.

Any ideas to get the printer going are greatly appreciated....
Harry Kubiak

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VRFuser Oct 9, 2003 5:03 PM
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Hello Bern,

You have a couple of options:

1. Georg Nied published his rather excellent .wav library several months ago. Try pinging him for a copy.

2. The alternative is to use the Matlab script engine if you are lucky enough to have VEE 6.0 or greater. Matlab and its associated signal processing toolbox have some great functions for waveform generation in addition to the native capabilities of VEE. BUT... what Matlab can do is save your array of data in .wav format - check out the WAVWRITE function in Matlab script (and its corresponding wavread). The really nice thing about these functions is that you do not have to be an expert in file formats. If you want some real fun check out soundsc in Matlab - it will play your array of data out to the sound card (forget playing with APIs or COM).

Hope this helps,

Andy
--------------------
Andy Street
Technical Consultant
Agilent Technologies

-----Original Message-----
From: bern muller [mailto:bernhard.muller@dlcdesignaudio.com]
Sent: 09 October 2003 22:43
To: VEE vrf
Subject: [vrf] Wav file

VEE is capable of being a very good arbitrary waveform generator. Is there a
way to write a generated waveform to a .wav file? I recall a similar
question a couple years ago, but didn't save it, and can't find it now.

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VRFuser Oct 10, 2003 2:27 AM
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Oh,Oh. I have VEE 6.2, but have not worked with the Matlab features at all.
I can't seem to find the Wavwrite function anywhere. It is not listed in the
Function and object browser under Matlab, and I can't find it in the help
files under Matlab Script either. What am I missing? I did find the
something about the signal processing toolbox in the help files, but nothing
about .Wav files or Wavwrite.

Thanks again.

----- Original Message -----
From: <andy_street@agilent.com>
To: "VEE vrf" <vrf@it.lists.it.agilent.com>
Sent: Friday, October 10, 2003 3:03 AM
Subject: [vrf] RE: Wav file

Hello Bern,

You have a couple of options:

1. Georg Nied published his rather excellent .wav library several months
ago. Try pinging him for a copy.

2. The alternative is to use the Matlab script engine if you are lucky
enough to have VEE 6.0 or greater. Matlab and its associated signal
processing toolbox have some great functions for waveform generation in
addition to the native capabilities of VEE. BUT... what Matlab can do is
save your array of data in .wav format - check out the WAVWRITE function in
Matlab script (and its corresponding wavread). The really nice thing about
these functions is that you do not have to be an expert in file formats. If
you want some real fun check out soundsc in Matlab - it will play your array
of data out to the sound card (forget playing with APIs or COM).

Hope this helps,

Andy
--------------------
Andy Street
Technical Consultant
Agilent Technologies

-----Original Message-----
From: bern muller [mailto:bernhard.muller@dlcdesignaudio.com]
Sent: 09 October 2003 22:43
To: VEE vrf
Subject: [vrf] Wav file

VEE is capable of being a very good arbitrary waveform generator. Is there a
way to write a generated waveform to a .wav file? I recall a similar
question a couple years ago, but didn't save it, and can't find it now.

---
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bill.ossmann Oct 10, 2003 3:20 AM
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That's peculiar. I don't see it in the function and object browser either (VEE 6.0), but it is in the Matlab Help Desk (Help>MATLAB Script>Help Desk). The URL from my browser comes up as:

file:///C:/Program%20Files/Agilent/VEE%20Pro%206.0/matlab/help/techdoc/ref/wavwrite.html?cmdname=wavwrite

since the entry is short, I'll paste it here:

wavwrite

Write Microsoft WAVE (.wav) sound file

Syntax

wavwrite(y,'filename')
wavwrite(y,Fs,'filename')
wavwrite(y,Fs,N,'filename')

Description

wavwrite supports multi-channel 8- or 16-bit WAVE data.

wavwrite(y,'filename') writes a WAVE file specified by the string filename. The data should be arranged with one channel per column. Amplitude values outside the range [-1,+1] are clipped prior to writing.

wavwrite(y,Fs,'filename') specifies the sample rate Fs, in Hertz, of the data.

wavwrite(y,Fs,N,'filename') forces an N-bit file format to be written, where N <= 16.

See Also

auwrite, wavread

--
Bill Ossmann
Philips Ultrasound
e-mail: bill.ossmann@philips.com



                                                           To:   "VEE vrf" <vrf@it.lists.it.agilent.com>
                                                           cc:   (bcc: Bill Ossmann/ANR/MS/PHILIPS)
                                                           Subject:    [vrf] RE: Wav file

               "Bern Muller"                               Classification:
               <bernhard.muller@dlcdesignaudio.
               com>

               10/10/2003 17:27
               Please respond to "Bern Muller"



Oh,Oh. I have VEE 6.2, but have not worked with the Matlab features at all.
I can't seem to find the Wavwrite function anywhere. It is not listed in the
Function and object browser under Matlab, and I can't find it in the help
files under Matlab Script either. What am I missing? I did find the
something about the signal processing toolbox in the help files, but nothing
about .Wav files or Wavwrite.

Thanks again.

----- Original Message -----
From: <andy_street@agilent.com>
To: "VEE vrf" <vrf@it.lists.it.agilent.com>
Sent: Friday, October 10, 2003 3:03 AM
Subject: [vrf] RE: Wav file

Hello Bern,

You have a couple of options:

1. Georg Nied published his rather excellent .wav library several months
ago. Try pinging him for a copy.

2. The alternative is to use the Matlab script engine if you are lucky
enough to have VEE 6.0 or greater. Matlab and its associated signal
processing toolbox have some great functions for waveform generation in
addition to the native capabilities of VEE. BUT... what Matlab can do is
save your array of data in .wav format - check out the WAVWRITE function in
Matlab script (and its corresponding wavread). The really nice thing about
these functions is that you do not have to be an expert in file formats. If
you want some real fun check out soundsc in Matlab - it will play your array
of data out to the sound card (forget playing with APIs or COM).

Hope this helps,

Andy
--------------------
Andy Street
Technical Consultant
Agilent Technologies

-----Original Message-----
From: bern muller [mailto:bernhard.muller@dlcdesignaudio.com]
Sent: 09 October 2003 22:43
To: VEE vrf
Subject: [vrf] Wav file

VEE is capable of being a very good arbitrary waveform generator. Is there a
way to write a generated waveform to a .wav file? I recall a similar
question a couple years ago, but didn't save it, and can't find it now.

---
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VRFuser Oct 11, 2003 2:09 AM
Mark Correct
Correct Answer
Vee doesn't display all of the available MATLAB functions... Try typing the function into a MATLAB script object manually. If that
doesn't work, maybe you don't have the sig processing toolkit.

>From Vee help:

"There are approximately 1500 functions available in the MATLAB Script engine supplied with VEE. The MATLAB Signal Processing
Toolkit provides about 200 more functions. VEE's Function & Object Browser shows about 500 of the most popular functions. Consult
the MATLAB HelpDesk for information about all the MATLAB functions."

-Bill Drago

----- Original Message -----
From: <bill.ossmann@philips.com>
To: "VEE vrf" <vrf@it.lists.it.agilent.com>
Sent: Friday, October 10, 2003 6:20 PM
Subject: [vrf] RE: Wav file

> That's peculiar. I don't see it in the function and object browser either (VEE 6.0), but it is in the Matlab Help Desk
(Help>MATLAB Script>Help Desk). The URL from my browser comes up as:
>
> file:///C:/Program%20Files/Agilent/VEE%20Pro%206.0/matlab/help/techdoc/ref/wavwrite.html?cmdname=wavwrite
>
> since the entry is short, I'll paste it here:
>
> wavwrite
>
>
> Write Microsoft WAVE (.wav) sound file
>
> Syntax
>
> wavwrite(y,'filename')
> wavwrite(y,Fs,'filename')
> wavwrite(y,Fs,N,'filename')
>
> Description
>
> wavwrite supports multi-channel 8- or 16-bit WAVE data.
>
> wavwrite(y,'filename') writes a WAVE file specified by the string filename. The data should be arranged with one channel per
column. Amplitude values outside the range [-1,+1] are clipped prior to writing.
>
> wavwrite(y,Fs,'filename') specifies the sample rate Fs, in Hertz, of the data.
>
> wavwrite(y,Fs,N,'filename') forces an N-bit file format to be written, where N <= 16.
>
> See Also
>
> auwrite, wavread
>
> --
> Bill Ossmann
> Philips Ultrasound
> e-mail: bill.ossmann@philips.com
>
>
>
>
>
>                                                            To:   "VEE vrf" <vrf@it.lists.it.agilent.com>
>                                                            cc:   (bcc: Bill Ossmann/ANR/MS/PHILIPS)
>                                                            Subject:    [vrf] RE: Wav file
>
>                "Bern Muller"                               Classification:
>                <bernhard.muller@dlcdesignaudio.
>                com>
>
>                10/10/2003 17:27
>                Please respond to "Bern Muller"
>
>
>
>
>
>
> Oh,Oh. I have VEE 6.2, but have not worked with the Matlab features at all.
> I can't seem to find the Wavwrite function anywhere. It is not listed in the
> Function and object browser under Matlab, and I can't find it in the help
> files under Matlab Script either. What am I missing? I did find the
> something about the signal processing toolbox in the help files, but nothing
> about .Wav files or Wavwrite.
>
> Thanks again.
>
>
> ----- Original Message -----
> From: <andy_street@agilent.com>
> To: "VEE vrf" <vrf@it.lists.it.agilent.com>
> Sent: Friday, October 10, 2003 3:03 AM
> Subject: [vrf] RE: Wav file
>
>
> Hello Bern,
>
> You have a couple of options:
>
> 1. Georg Nied published his rather excellent .wav library several months
> ago. Try pinging him for a copy.
>
> 2. The alternative is to use the Matlab script engine if you are lucky
> enough to have VEE 6.0 or greater. Matlab and its associated signal
> processing toolbox have some great functions for waveform generation in
> addition to the native capabilities of VEE. BUT... what Matlab can do is
> save your array of data in .wav format - check out the WAVWRITE function in
> Matlab script (and its corresponding wavread). The really nice thing about
> these functions is that you do not have to be an expert in file formats. If
> you want some real fun check out soundsc in Matlab - it will play your array
> of data out to the sound card (forget playing with APIs or COM).
>
> Hope this helps,
>
> Andy
> --------------------
> Andy Street
> Technical Consultant
> Agilent Technologies
>
> -----Original Message-----
> From: bern muller [mailto:bernhard.muller@dlcdesignaudio.com]
> Sent: 09 October 2003 22:43
> To: VEE vrf
> Subject: [vrf] Wav file
>
>
> VEE is capable of being a very good arbitrary waveform generator. Is there a
> way to write a generated waveform to a .wav file? I recall a similar
> question a couple years ago, but didn't save it, and can't find it now.
>
>
> ---
> You are currently subscribed to vrf as: andy_street@agilent.com
> To subscribe send a blank email to "join-vrf@it.lists.it.agilent.com".
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>
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>
>
>
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>
>
>
>
>
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hansolofalcon Oct 11, 2003 2:20 AM
Mark Correct
Correct Answer
Hello (again) from Gregg C Levine
Actually the way the help file is constructed is broken by IE's
standards. But I did find the actual location, that the URL
references. It turns out that the variable filename is indeed a
variable, I made it work by sticking the name of my wave file, in a
text constant box, and sending it to the MATLAB script formula
containing the function.
The MATLAB script formula that kicks that one off, is the one for
creating a Sawtooth wave file.

Both it, and the one that I use to create WAV files from ordinary
ASCII data files produce ones that sound perfect. The one I normally
use, is a collection of command line based programs from an outfit
from New Mexico, TDL by name. Both methods of generating wave
patterns work, both that MATLAB script, and a wave generator object.

I must say, this MATLAB runtime is an excellent idea for VEE, it
complements the way VEE works.
-------------------
Gregg C Levine hansolofalcon@worldnet.att.net
------------------------------------------------------------
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke." Obi-Wan Kenobi
(This company dedicates this E-Mail to General Obi-Wan Kenobi )
(This company dedicates this E-Mail to Master Yoda )

> -----Original Message-----
> From: William J. Drago [mailto:wdrago@suffolk.lib.ny.us]
> Sent: Saturday, October 11, 2003 5:09 PM
> To: VEE vrf
> Subject: [vrf] RE: Wav file
>
> Vee doesn't display all of the available MATLAB functions... Try
typing the
> function into a MATLAB script object manually. If that
> doesn't work, maybe you don't have the sig processing toolkit.
>
> From Vee help:
>
> "There are approximately 1500 functions available in the MATLAB
Script engine
> supplied with VEE. The MATLAB Signal Processing
> Toolkit provides about 200 more functions. VEE's Function & Object
Browser
> shows about 500 of the most popular functions. Consult
> the MATLAB HelpDesk for information about all the MATLAB functions."
>
> -Bill Drago
>
>
> ----- Original Message -----
> From: <bill.ossmann@philips.com>
> To: "VEE vrf" <vrf@it.lists.it.agilent.com>
> Sent: Friday, October 10, 2003 6:20 PM
> Subject: [vrf] RE: Wav file
>
>
> > That's peculiar. I don't see it in the function and object browser
either (VEE 6.0),
> but it is in the Matlab Help Desk
> (Help>MATLAB Script>Help Desk). The URL from my browser comes up as:
> >
> >
>
file:///C:/Program%20Files/Agilent/VEE%20Pro%206.0/matlab/help/techdoc
/ref/wa
> vwrite.html?cmdname=wavwrite
> >
> > since the entry is short, I'll paste it here:
> >
> > wavwrite
> >
> >
> > Write Microsoft WAVE (.wav) sound file
> >
> > Syntax
> >
> > wavwrite(y,'filename')
> > wavwrite(y,Fs,'filename')
> > wavwrite(y,Fs,N,'filename')
> >
> > Description
> >
> > wavwrite supports multi-channel 8- or 16-bit WAVE data.
> >
> > wavwrite(y,'filename') writes a WAVE file specified by the string
filename. The
> data should be arranged with one channel per
> column. Amplitude values outside the range [-1,+1] are clipped prior
to writing.
> >
> > wavwrite(y,Fs,'filename') specifies the sample rate Fs, in Hertz,
of the data.
> >
> > wavwrite(y,Fs,N,'filename') forces an N-bit file format to be
written, where N <=
> 16.
> >
> > See Also
> >
> > auwrite, wavread
> >
> > --
> > Bill Ossmann
> > Philips Ultrasound
> > e-mail: bill.ossmann@philips.com
> >
> >
> >
> >
> >
> >                                                            To:
"VEE vrf" <vrf@it.lists.it.agilent.com>
> >                                                            cc:
(bcc: Bill Ossmann/ANR/MS/PHILIPS)
> >
Subject:    [vrf] RE: Wav file
> >
> >                "Bern Muller"
Classification:
> >                <bernhard.muller@dlcdesignaudio.
> >                com>
> >
> >                10/10/2003 17:27
> >                Please respond to "Bern Muller"
> >
> >
> >
> >
> >
> >
> > Oh,Oh. I have VEE 6.2, but have not worked with the Matlab
features at all.
> > I can't seem to find the Wavwrite function anywhere. It is not
listed in the
> > Function and object browser under Matlab, and I can't find it in
the help
> > files under Matlab Script either. What am I missing? I did find
the
> > something about the signal processing toolbox in the help files,
but nothing
> > about .Wav files or Wavwrite.
> >
> > Thanks again.
> >
> >
> > ----- Original Message -----
> > From: <andy_street@agilent.com>
> > To: "VEE vrf" <vrf@it.lists.it.agilent.com>
> > Sent: Friday, October 10, 2003 3:03 AM
> > Subject: [vrf] RE: Wav file
> >
> >
> > Hello Bern,
> >
> > You have a couple of options:
> >
> > 1. Georg Nied published his rather excellent .wav library several
months
> > ago. Try pinging him for a copy.
> >
> > 2. The alternative is to use the Matlab script engine if you are
lucky
> > enough to have VEE 6.0 or greater. Matlab and its associated
signal
> > processing toolbox have some great functions for waveform
generation in
> > addition to the native capabilities of VEE. BUT... what Matlab
can do is
> > save your array of data in .wav format - check out the WAVWRITE
function in
> > Matlab script (and its corresponding wavread). The really nice
thing about
> > these functions is that you do not have to be an expert in file
formats. If
> > you want some real fun check out soundsc in Matlab - it will play
your array
> > of data out to the sound card (forget playing with APIs or COM).
> >
> > Hope this helps,
> >
> > Andy
> > --------------------
> > Andy Street
> > Technical Consultant
> > Agilent Technologies
> >
> > -----Original Message-----
> > From: bern muller [mailto:bernhard.muller@dlcdesignaudio.com]
> > Sent: 09 October 2003 22:43
> > To: VEE vrf
> > Subject: [vrf] Wav file
> >
> >
> > VEE is capable of being a very good arbitrary waveform generator.
Is there a
> > way to write a generated waveform to a .wav file? I recall a
similar
> > question a couple years ago, but didn't save it, and can't find it
now.
> >
> >
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