[LAD] twice as loud

[lieven moors]

On 07/22/2010 11:25 PM, Albert Graef wrote:
> lieven moors wrote:
>   
>> ...continuation of truncated mail (does anyone know why this happens?)
>>     
> Probably it's the second "From" line; looks like your mail client is
> confused by this.
>
> Concerning your question: As other have remarked, that is a very
> intricate question which is studied in psychoacoustics, so one of the
> requisite textbooks on the subject (like Roederer's "Psychophysics")
>   
Thanks for the pointer. I'll see if I can find a copy...
> might be helpful. Conventional wisdom (based on psychoacoustic
> experiments) has it that a 10 phon increase (i.e., 10dB SPL, corrected
> for frequency-specific sensitivity using the Fletcher/Munson curves or
> some variation of that) means double loudness for many people (on the
> average).
>   
Do you think there is a direct connection between frequency-specific
sensitivity, and the SPL range the ear can tolerate for specific
frequencies?
> But of course that doesn't mean that you can just add signals until you
> achieve a 10 phon increase and get something twice as loud. If you're
> adding signals then you also have to consider masking effects
> (basically, spectral components hitting the same critical band on the
> Cochlea), so you'll need a psychoacoustic model (same as what gets used
> for lossy compression) to get it sorted out.
>
> Albert
>
>   
Yes, the ear is a wonderfully complex thing...

Greetings,

Lieven