Re: HAL headroom question
Re: HAL headroom question
- Subject: Re: HAL headroom question
- From: Jeff Moore <email@hidden>
- Date: Wed, 06 Mar 2002 19:13:47 -0800
on 3/6/02 5:35 PM, Kurt Bigler <email@hidden> wrote:
>
The presence of the word "headroom" makes me wonder how the amplitudes seen
>
by an application relate to the amplitudes seen by the hardware, given the
>
multiple-client scenario.
The mix is a unity gain mix. No attenuation or gain is applied to any
client.
The headroom I refer to is the headroom above 1.0 (and below -1.0) that a
floating point number gives you. This frees the mix code from worrying about
overflow problems. It is one of the efficiencies of a floating point based
engine.
--
Jeff Moore
Core Audio
Apple
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