From: James Courtier-Dutton <James@superbug.co.uk>
To: Lee Revell <rlrevell@joe-job.com>
Cc: alsa-devel <alsa-devel@lists.sourceforge.net>
Subject: Re: Audigy DSP questions.
Date: Tue, 20 Sep 2005 08:53:23 +0100 [thread overview]
Message-ID: <432FBFF3.3010804@superbug.co.uk> (raw)
In-Reply-To: <1127163909.9899.46.camel@mindpipe>
Lee Revell wrote:
> On Sun, 2005-09-18 at 19:00 +0100, James Courtier-Dutton wrote:
>
>>James Courtier-Dutton wrote:
>>
>>>I think I have worked it out.
>>>Take each value and divide by 0x80000000 to get a value between 0 and 1.
>>>This is then converted into dB with
>>>0 == Mute
>>>0x01571f82 == -19.8 dB
>>>0x7fffffff == 0 dB
>>>With each value being a constant step of 0.2 dB.
>>>
>>>James
>>>
>>>
>>
>>Did anyone spot the deliberate mistake?
>>
>
>
> I give up, what is it and why do you think it's deliberate?
>
> Lee
>
The dB values are all half what they should be. Mixed up power and volts.
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prev parent reply other threads:[~2005-09-20 7:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-18 15:41 Audigy DSP questions James Courtier-Dutton
2005-09-18 17:28 ` James Courtier-Dutton
2005-09-18 18:00 ` James Courtier-Dutton
2005-09-19 21:05 ` Lee Revell
2005-09-20 7:53 ` James Courtier-Dutton [this message]
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