[PD] making puredata headphone-safe

Pedro Lopes pedro.lopes at ist.utl.pt
Wed Aug 24 00:51:32 CEST 2011


I hate dentist drills. I second that.

On Tue, Aug 23, 2011 at 11:48 PM, Martin Peach <martin.peach at sympatico.ca>wrote:

> 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@**sympatico.ca <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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-- 
Pedro Lopes (HCI Researcher / MSc)
contact: pedro.lopes at ist.utl.pt
website: http://web.ist.utl.pt/Pedro.Lopes /
http://pedrolopesresearch.wordpress.com/ | http://twitter.com/plopesresearch
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