I would certainly like a resurrection of the sone curve GEN routine.

Art Hunkins

----- Original Message ----- 
From: "Richard Boulanger" 
To: 
Sent: Thursday, December 04, 2008 12:56 PM
Subject: [Csnd] Re: low frequency oscilators


> Everything from Barry Vercoe's Music360 should have made it to Csound?
> Curious.
> Maybe it can be resurrected?
>
> -dB
> On Dec 4, 2008, at 11:56 AM, Art Hunkins wrote:
>
>> The curve that relates perceived loudness to frequency is the 
>> Fletcher-Munson curve.
>>
>> Another curve I'm particularly interested in relates amplitude to 
>> perceived loudness: the sone curve.
>>
>> Looking it up in my old Music360 manual, I found (recalled) it was  GEN13 
>> there. A pity that routine didn't make it into Csound. I used  it 
>> regularly, and continue to do so by approximating it with GEN16.  This is 
>> the table I read:
>> f1 0 512 16 1 511 2.2 1000
>>
>> Art Hunkins
>>
>> ----- Original Message ----- From: "Chuckk Hubbard" 
>> > >
>> To: 
>> Sent: Thursday, December 04, 2008 10:24 AM
>> Subject: [Csnd] Re: Re: Re: Re: Re: low frequency oscilators
>>
>>
>>> On Thu, Dec 4, 2008 at 12:37 AM, Richard Dobson
>>>  wrote:
>>>> Andres Cabrera wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> Also be aware that ears are not linear in their relation of  amplitude
>>>>> and frecuency, i.e. different frequencies at the same amplitude  will
>>>>> be heard at different loudness.
>>>>>
>>>>
>>>> And further, that  the same tone at different loudnesses  will be 
>>>> heard at
>>>> different pitches, e.g. louder-->flatter, quieter-->sharper.
>>>>
>>>> Richard Dobson
>>>
>>>
>>> I've heard this in reference to the extremes, towards the higher and
>>> lower ends of the audible spectrum; I forget the name given to it,  but
>>> I've verified it myself with several-kHz tones, changing the  amplitude
>>> and hearing a pitch change.  I'm not sure how strong it is in the
>>> mid-range, I can't detect it so much.
>>>
>>> -Chuckk
>>>
>>>
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>>
>>
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>
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