----- Original Message -----
From: Hans-Christoph Steiner hans@at.or.at To: Martin martin.peach@sympatico.ca Cc: pd-list@iem.at Sent: Monday, August 29, 2011 11:52 AM Subject: Re: [PD] making puredata headphone-safe
On Aug 23, 2011, at 3:43 PM, Martin wrote:
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.
Hmm, I don't think that's actually true in all cases. On a MacBook Pro running Mac OS X, I've had the volume set to one above mute, but had massive feedback from LPC patches that were very very loud. [noise~] would be very comfortable at that volume setting. I think some platforms do the output mixing in the digital domain, so my min volume would be [*~ 0.01], so that this would still make a very loud sound:
[noise~] | [*~ 999999] | [*~ 0.01] (i.e. the Apple output mixing) |
In this particular case, the sound output actually gets shutdown entirely, so you have to reboot to get sound output again.
Please try the following and see if you get different results:
[noise~] | [*~ 999999] | [clip~ -1 1] | [*~ 0.01] (i.e. the Apple output mixing) |
-Jonathan
.hc
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