Re: [ecasound] Internal Format and 24-bits?

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Subject: Re: [ecasound] Internal Format and 24-bits?
From: Len Moskowitz (vze24hrw_AT_verizon.net)
Date: Wed Jan 23 2002 - 20:04:31 EET

I will be using a variety of mic pre-amps and A-to-D converters. The
Midiman/M-Audio Duo and the Edirol UA-5 are the first candidates.

My company is a dealer for Midiman/M-Audio. You can see our Web site for
details about the Duo: http://www.core-sound.com/duo.html

Len Moskowitz

----- Original Message -----
From: "Robert Jonsson" <robert.jonsson_AT_dataductus.se>
To: <ecasound-list_AT_wakkanet.fi>
Sent: Wednesday, January 23, 2002 2:56 AM
Subject: Re: [ecasound] Internal Format and 24-bits?

> Hi,
>
> As a sidenote, would be interesting to know what soundcard you are going
to
> use/is using?
>
> ...curious by nature :-)
>
> Regards
> Robert
>
>
> Kai Vehmanen wrote:
>
> > On Tue, 22 Jan 2002, Len Moskowitz wrote:
> >
> >
> >>I don't expect to do anything more complicated than storing the 24-bit
data
> >>to a WAV-format file and perhaps playing it; no processing, no editing.
> >>
> >
> > 24bit won't be a problem. Ecasound uses 32bit floats as its internal
> > format. As for inputs and outputs, both 24bit and 32bit (float and
> > integer) formats are supported (at least with ALSA, OSS soundcard
drivers,
> > and wav and raw audio file formats).
> >
> > If 32bit float doesn't seem enough, edit the
> > ecasound/libecasound/sample-specs.h file, and change sample_t type from
> > float to double and then recompile. After this change, ecasound will use
> > 64bit doubles for all internal operations. Only drawback to this (aside
> > from performance) is that you will lose some features, like LADSPA
plugin
> > support, which require 32bit float data.
> >
> >
> >>In the ecasound documentation it says that everything is converted to
its
> >>internal format. Will there be any problem setting the internal format
to
> >>24-nbit/96 kHz so that the data stream is not ever resampled?
> >>
> >
> > 96kHz won't be a problem either, but be sure to add -sr:96000 to the
> > command-line to avoid resampling (otherwise ecasound would resample
> > to/from its default 44.1kHz internal srate).
> >
> >
>
>
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