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From: Salmon Egg on 30 Mar 2010 02:42
I am trying to hear how the timbre of a tone changes according to the
harmonics present in a sound.

I can use Excel to generate a waveform with controlled amplitudes of
various harmonics. I can use the graphics capability in excel to display
the waveform. How can I convert such information to a wavefile that I
can play on my Mac?

In the past, I could have written a snippet of code, say in Pascal, make
such a file. Then I make calls from inside an Excel macro file. In
recent years I have not done anything like that, Moreover, Pascal and
macro sheets do not seem to be available the way they used to be.

What is the easiest way to make a wave file from a table or formula
that I can play back?

Bill

--
An old man would be better off never having been born.
From: Jolly Roger on 30 Mar 2010 10:13
In article <SalmonEgg-139ACD.23423729032010(a)news60.forteinc.com>,
Salmon Egg <SalmonEgg(a)sbcglobal.net> wrote:

> I am trying to hear how the timbre of a tone changes according to the
> harmonics present in a sound.
>
> I can use Excel to generate a waveform with controlled amplitudes of
> various harmonics. I can use the graphics capability in excel to display
> the waveform. How can I convert such information to a wavefile that I
> can play on my Mac?
>
> In the past, I could have written a snippet of code, say in Pascal, make
> such a file. Then I make calls from inside an Excel macro file. In
> recent years I have not done anything like that, Moreover, Pascal and
> macro sheets do not seem to be available the way they used to be.
>
> What is the easiest way to make a wave file from a table or formula
> that I can play back?
>
> Bill

Talk about using the wrong tool for the job! Why not use an actual sound
editor?

--
Send responses to the relevant news group rather than email to me.
E-mail sent to this address may be devoured by my very hungry SPAM
filter. Due to Google's refusal to prevent spammers from posting
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JR
From: Salmon Egg on 30 Mar 2010 12:30
In article <jollyroger-935597.09131530032010(a)news.individual.net>,
Jolly Roger <jollyroger(a)pobox.com> wrote:

> Talk about using the wrong tool for the job! Why not use an actual sound
> editor?

I want to demonstrate the mathematical decomposition and synthesis of
sound using Fourier theory. For example, if you pluck a string, the
timbre changes with where you pluck the string. By plucking close to the
bridge, you increase the higher harmonic content compared to plucking in
the middle of the string. The spatial Fourier decomposition shows up in
the temporal waveform.

As an alternative, I could use the Grapher App in utilities to create a
waveform. I would then have to convert to a function of time that I
could play.

Bill

--
An old man would be better off never having been born.
From: Jolly Roger on 30 Mar 2010 12:37
In article <SalmonEgg-CD5900.09303730032010(a)news60.forteinc.com>,
Salmon Egg <SalmonEgg(a)sbcglobal.net> wrote:

> In article <jollyroger-935597.09131530032010(a)news.individual.net>,
> Jolly Roger <jollyroger(a)pobox.com> wrote:
>
> > Talk about using the wrong tool for the job! Why not use an actual sound
> > editor?
>
> I want to demonstrate the mathematical decomposition and synthesis of
> sound using Fourier theory. For example, if you pluck a string, the
> timbre changes with where you pluck the string. By plucking close to the
> bridge, you increase the higher harmonic content compared to plucking in
> the middle of the string. The spatial Fourier decomposition shows up in
> the temporal waveform.
>
> As an alternative, I could use the Grapher App in utilities to create a
> waveform. I would then have to convert to a function of time that I
> could play.

Ah I see what you're doing. Sounds like you're thinking along the right
path then: export the raw data in a format that can be read by a program
that will convert the raw numbers into a sound. You may be stuck
writing that program yourself using Xcode though.

--
Send responses to the relevant news group rather than email to me.
E-mail sent to this address may be devoured by my very hungry SPAM
filter. Due to Google's refusal to prevent spammers from posting
messages through their servers, I often ignore posts from Google
Groups. Use a real news client if you want me to see your posts.

JR
From: John McWilliams on 30 Mar 2010 12:56
Salmon Egg wrote:
> In article <jollyroger-935597.09131530032010(a)news.individual.net>,
> Jolly Roger <jollyroger(a)pobox.com> wrote:
>
>> Talk about using the wrong tool for the job! Why not use an actual sound
>> editor?
>
> I want to demonstrate the mathematical decomposition and synthesis of
> sound using Fourier theory. For example, if you pluck a string, the
> timbre changes with where you pluck the string. By plucking close to the
> bridge, you increase the higher harmonic content compared to plucking in
> the middle of the string. The spatial Fourier decomposition shows up in
> the temporal waveform.
>
> As an alternative, I could use the Grapher App in utilities to create a
> waveform. I would then have to convert to a function of time that I
> could play.

There are a number of apps that'll graphically display what you're
talking about. Amadeus is one I've seen mentioned often, and I've just
downloaded and tested it for you. There's a 30 day free trial.

I don't post in MS groups, so x post removed-
microsoft.public.excel.macintosh.microsoft.public.excel

--
john mcwilliams
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