Re: [SoX-users] Creating a special 24 Bit format

[TJF <tjf...@we...>]

Hi,

I did this (because I get always noise in the not working way...):

sox -r 88200 -n -b 24 -c 2 -e signed temp.raw synth 40 sine 300-3300

The 24bit Player-Module plays the sine - but also with noise! So this 
doesn't still work...

Converting to 32 bit:
sox -r 88200 -e unsigned -b 24 temp.raw -b 32 output.raw

This works fine with the 32bit signed Player - but not with the 24 bit 
Player (I have only this API-Information from the C-Code: "24 Bit 
Raw-File is needed which uses the upper 3 bytes of 32-bit signed 
integer")...

Normally my used input file is a 16bit / 44,1 kHz wav, that will be 
upsampled and played in a raw format (.f64, .f32, .s32, s16).

Thanks a lot!
Regards
Thomas


robs schrieb:
> Hmm, I've now tried it and it does seem to work here:
>
> Create a signed 24-bit raw file:
>
> $ sox -r 88200 -n -b 24 -e signed temp.raw synth 40s noise
>
> $ hd temp.raw
> 00000000  05 b7 cc b5 60 03 ae a3  93 d1 67 e0 38 e9 63 4b  
> |....`.....g.8.cK|
> 00000010  ee ba ea b0 02 9e d7 b7  fb d6 e8 a8 55 3d b8 0a  
> |............U=..|
> 00000020  e0 4c 4a da a1 83 48 0f  3a 1b 8b 13 35 bd f7 4f  
> |.LJ...H.:...5..O|
> 00000030  be 9d 76 04 71 b7 18 3b  fd 17 44 f3 27 93 f4 4c  
> |..v.q..;..D.'..L|
> 00000040  06 1b 52 32 82 bd 63 d7  ef e4 5f ea 7f a7 6d 5f  
> |..R2..c..._...m_|
> 00000050  81 53 3f 67 6a bb db 21  62 6b dc 91 0e be 97 a0  
> |.S?gj..!bk......|
> 00000060  2c ba 69 78 f3 1c 56 f6  67 21 6a 0f 0a 14 86 b0  
> |,.ix..V.g!j.....|
> 00000070  40 ff cc 4a 2f e0 93 6d                           |@..J/..m|
> 00000078
>
> Convert to 32 bit:
>
> $ sox -r 88200 -e unsigned -b 24 temp.raw -b 32 output.raw
>
> $ hd output.raw
> 00000000  00 05 b7 cc 00 b5 60 03  00 ae a3 93 00 d1 67 e0  
> |......`.......g.|
> 00000010  00 38 e9 63 00 4b ee ba  00 ea b0 02 00 9e d7 b7  
> |.8.c.K..........|
> 00000020  00 fb d6 e8 00 a8 55 3d  00 b8 0a e0 00 4c 4a da  
> |......U=.....LJ.|
> 00000030  00 a1 83 48 00 0f 3a 1b  00 8b 13 35 00 bd f7 4f  
> |...H..:....5...O|
> 00000040  00 be 9d 76 00 04 71 b7  00 18 3b fd 00 17 44 f3  
> |...v..q...;...D.|
> 00000050  00 27 93 f4 00 4c 06 1b  00 52 32 82 00 bd 63 d7  
> |.'...L...R2...c.|
> 00000060  00 ef e4 5f 00 ea 7f a7  00 6d 5f 81 00 53 3f 67  
> |..._.....m_..S?g|
> 00000070  00 6a bb db 00 21 62 6b  00 dc 91 0e 00 be 97 a0  
> |.j...!bk........|
> 00000080  00 2c ba 69 00 78 f3 1c  00 56 f6 67 00 21 6a 0f  
> |.,.i.x...V.g.!j.|
> 00000090  00 0a 14 86 00 b0 40 ff  00 cc 4a 2f 00 e0 93 6d  
> |......@...J/...m|
> 000000a0
>
> Lower 8 bits of all 32-bit samples are zero (upper 24 bits unchanged).
>
>
> ----- Original Message ----
> > From: TJF <tjf...@we...>
> > To: sox...@li...
> > Sent: Tue, 9 March, 2010 22:41:48
> > Subject: Re: [SoX-users] Creating a special 24 Bit format
> >
> > Thank you! But both does not work...
> >
> >
> > robs schrieb:
> > > Not tried it, but this might work:
> > >
> > > sox music.wav -e signed -b 24 temp.raw rate 88200
> > > sox -e unsigned -b 24 -r 88200 temp.raw -b 32 output_88200_24.raw
> > >
> > >
> > > ----- Original Message ----
> > > 
> > >> From: TJF
> > >> To: sox...@li...
> > >> Sent: Tue, 9 March, 2010 20:51:31
> > >> Subject: [SoX-users] Creating a special 24 Bit format
> > >>
> > >> Hi,
> > >>
> > >> has anyone an idea, how to create such a raw-file with sox:
> > >>
> > >> 24 Bit Raw-File which uses the upper 3 bytes of 32-bit signed 
> integer...?
> > >>
> > >> I tried things like this (Win), also 32...:
> > >> sox.exe music.wav -e signed -b 24 -t .raw output_88200_24.raw 
> rate 88200
>
>
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