[PD] making puredata headphone-safe

[Martin Peach]

On 2011-08-23 18:25, Jonathan Wilkes wrote:
> Do you mean:
> [osc~ some-frequency]
> |
> [*~ 5555]
>
> ?
>

I don't think so. 5555Hz is around dentist drill frequency, so it hurts ;).
Your dac can never go above one no matter what you feed it, while the 
perceived loudness of a loud sound varies according to its harmonic 
content. So I guess it's somewhat subjective what sound source gives the 
loudest apparent output. An [osc~] multiplied by 5555 will sound louder 
but it won't actually be louder than an osc multiplied by one (the 
amplitude at the output will still be between 1 and -1).
The idea is to set the master volume so that the loudest sound you can 
make will not break anything, whether speakers or ears or inner peace. 
The easiest way to do that is to play the loudest sound first and adjust 
the volume so that it's loud but not too loud. Then everything else you 
do will be quieter than that.

Martin


>     ------------------------------------------------------------------------
>     *From:* tim vets <timvets at gmail.com>
>     *To:* Martin <martin.peach at sympatico.ca>
>     *Cc:* pd-list at iem.at
>     *Sent:* Tuesday, August 23, 2011 6:13 PM
>     *Subject:* Re: [PD] making puredata headphone-safe
>
>
>
>     2011/8/23 Martin <martin.peach at sympatico.ca
>     <mailto:martin.peach at sympatico.ca>>
>
>         On 23/08/11 03:29 PM, Stephen Lavelle wrote:
>
>             I've managed to hurt my ears twice over the past two days
>             when using PD w/ headphones. Even at lowest system volumes,
>             it seems that Terrible Things can happen. Are there any
>             precautions that I can take to make it feel less like I'm
>             taking my life into my hands when I have to use headphones?
>
>
>
>
>         Try making a [noise~] connected directly to a [dac~] and set the
>         headphone volume so you can live with that. Nothing will ever be
>         louder than that.
>
>         Martin
>
>     [osc~ 5555] may not be louder than [noise~], but definitely more
>     painful...no?
>
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