linuxaudio.org

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On Mon, Dec 24, 2012 at 9:27 AM, Fons Adriaensen wrote:
>

quoted text
> Violins (and many other instruments) can and do produce harmonics

> above 20 kHz. As long as these are vibrations inside the instrument

> they could even interact in non-linear ways and produce something that

> is audible. Once they are 'in the air', they don't interact and you

> can't hear them.

>

>

Correct, but when it comes to recording the sound of that particular violin

you don't need to capture the ultrasonic frequencies, just what we can hear

for it to be a perfect reproduction for the listener.  I was simplifying

things a little in my explanation, as in the end only what we can hear

makes up any of the identifying information about the instrument, which you

obviously state later on.

       Seablade
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On Mon, Dec 24, 2012 at 9:27 AM, Fons Adriaensen =

<fons@linuxaudi=

o.org> wrote:
Violins (and many other instruments) can and do produce harmonics

above 20 kHz. As long as these are vibrations inside the instrument

they could even interact in non-linear ways and produce something that

is audible. Once they are 'in the air', they don't interact and=

 you

can't hear them.

Correct, but when it comes to recordin=

g the sound of that particular violin you don't need to capture the ult=

rasonic frequencies, just what we can hear for it to be a perfect reproduct=

ion for the listener.=A0 I was simplifying things a little in my explanatio=

n, as in the end only what we can hear makes up any of the identifying info=

rmation about the instrument, which you obviously state later on.

=A0=A0=A0=A0=A0=A0 Seablade
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