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Re: Limiter on audio output?

From: Raymond Toy <rtoy@google.com>
Date: Mon, 25 Sep 2017 11:06:14 -0700
Message-ID: <CAE3TgXG-pQO6wVkEzWwAn+ih0_X-mLAo7_H8Ktx9BGhzmJdm2w@mail.gmail.com>
To: "gaito@g200kg.com" <gaito@g200kg.com>
Cc: "public-audio@w3.org" <public-audio@w3.org>
See https://github.com/WebAudio/web-audio-api/issues/1272

On Mon, Sep 25, 2017 at 10:36 AM, gaito@g200kg.com <gaito@g200kg.com> wrote:

> In my test, it behaves differently depending on the browser and output
> device (USB or built-in), clip or compressor is applied.
>
> Currently, I think that the absence of regulation about the maximum
> amplitude of the signal at the destination node is the cause of variations
> in the implementation of each browser.
>
> Would you like to add the following specs?
> 1. The input of the destination node treats the amplitude of -1.0 to +1.0
>      as the maximum amplitude (0 dBFS)
> 2. If a signal exceeding the maximum amplitude is input,
>      (Depending on the behavior of the lower layer) or (clip to the
>       range from -1.0 to +1.0) or something.
> ----------------
> gaito@g200kg.com
>
> > There is no limiter specced by the Web Audio API.
> >
> > This is likely to be an implementation bug, please file a ticket on the
> > affected web browser's bug tracker.
> >
> > Thanks,
> > Paul.
> >
> > On Mon, Sep 25, 2017 at 4:27 PM, Andre Michelle <
> > andre.michelle@audiotool.com> wrote:
> >
> > > Hi,
> > >
> > >
> > > I cannot find anything in the docs, but it is obvious that there is a
> > > limiter in the end of the signal chain - probably to protect the
> listeners
> > > from loud and ugly output if something goes wrong.
> > >
> > > However, is there a way to disable the limiter? I understand that for
> most
> > > web-audio-api applications it is a nice and convenient way to have your
> > > output limited automatically. But we are developing a DAW where the
> user
> > > should have full control over the signal chain.
> > >
> > > ~
> > > Andre Michelle
> > > http://www.audiotool.com
> > >
> > >
>
>
>
Received on Monday, 25 September 2017 18:06:37 UTC

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