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1994-01-23
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From bill%solaria@hac2arpa.hac.com Tue Jun 22 19:26:36 1993
Return-Path: <bill%solaria@hac2arpa.hac.com>
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id AA29019; Tue, 22 Jun 93 19:26:34 -0700
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From: bill%solaria@hac2arpa.hac.com (Bill Neisius)
Message-Id: <199306230228.AA14987@solaria>
Company: Hughes Aircraft; El Segundo, CA 90245
Subject: Re: New SOX release
To: thinman@netcom.com (Technically Sweet)
Date: Tue, 22 Jun 93 19:28:36 PDT
In-Reply-To: <9306222117.AA12327@netcom3.netcom.com>; from "Technically Sweet" at Jun 22, 93 2:17 pm
X-Mailer: ELM [version 2.3 PL11]
Status: OR
> It also tries to tell you what kind of adpcm or u-law
> format it is rejecting.
Wouldn't it be nice to throw an ADPCM routine into SOX to encode/decode....
> What is the extended block format? If it's documented
> somewhere and there are adequate test files I can add it.
Here's the format:
Block Type 8 - Extended Block
byte description
---- -----------
0 0x08
1-3 Block length (always 4)
4-5 Time constant
mono: 65536 - (256000000/sample_rate)
stereo: 65536 - (256000000/(2*sample_rate))
6 pack
0: 8-bit unpacked
1-3: packed
4-10: "n-channel multi" whatever that is...
7 mode
0: mono
1: stereo
"Block type 8 always precedes block type 1. When this block is present,
the attributes in block type 1 are ignored"
Test files? I could generate some if you like...
There must be a 16-bit VOC...right? I guess it might be pack type #11...
-Bill