Re: Picking out the channels of an audio source

Hi Chris,

There isn't anything currently, but we could add a ChannelSplitterNode and
ChannelMergerNode.

The ChannelSplitterNode would have a single input, and multiple outputs (one
per channel).  For example, in the stereo case it would take a stereo input,
with two mono outputs which could be routed in strange ways (ping-pong delay
effects for example).

The ChannelMergerNode would have multiple inputs and combine all the
channels into a single output.  In the simplest case, it would accept two
mono inputs with a single stereo output.

We would have to be careful with the ChannelSplitterNode, because its number
of outputs could change dynamically simply by connecting a different source
(with different number of channels) to its input.

Chris


On Wed, Jul 14, 2010 at 7:51 AM, Chris Marrin <cmarrin@apple.com> wrote:

>
> In looking at the spec, I haven't seen any (explicit) way to get access to
> a single channel of an audio source. Is there a way I'm missing? I know you
> could hack this using some of the positional audio nodes. But it seems like
> it would be a good idea to be able to split out the individual channels more
> directly. It would allow (admittedly hacky) tricks of being able to store
> separate audio tracks in a single audio source.
>
> Is there already a way to do this?
>
> -----
> ~Chris
> cmarrin@apple.com
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