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Re: kern/51784: "Synthesized" speaker hums

The following reply was made to PR kern/51784; it has been noted by GNATS.

From: Nathanial Sloss <>
Subject: Re: kern/51784: "Synthesized" speaker hums
Date: Thu, 25 May 2017 18:55:17 +1000

 I've since found there is quality loss converting from ulaw to signed linear.
 I now have a 16 bit 1 channel signed linear bell.
 To use apply this patch:
 and add the following to your kernel config:
 options HIRES_BELL
 Please let me know if this resolves the "hum" this time?
 Best regards,

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