Re: [libdv-dev] RE: [Kino-dev] 12bit audio bleep FIXED

[Dan D. <da...@de...>]

For release, we decided to set audioRendering=0 to use libdv, right?
Frame::ExtractAudio seems stable now, but I was experiencing some
horrible stuttering sound at the start of playback that I felt would be
annoying. Is that fixed?

On Sat, 2001-11-17 at 05:24, Charles Yates wrote:
> Well, that certainly sounds better :-)... but playback in kino via libdv's
> extract_full_audio has always had (and still has) a hissy quality - Arne's
> implementation of the ExtractAudio (in kinos/src/frame.cc) sounds better
> [for those not following the kinodev lists, 0.5 allows you to choose between
> the libdv and ExtractAudio rendering - for me the ExtractAudio method is
> working much better].
> 
> I am currently applying Stefan's fix to ExtractAudio and it currently plays
> bleepless (but slightly distorted) audio there too ... Will continue with
> this and post soon.
> 
> Thanks,
> 
> Charlie
> 
> -----Original Message-----
> From: kin...@li...
> [mailto:kin...@li...]On Behalf Of Stefan Lucke
> Sent: 17 November 2001 10:17
> To: lib...@li...; kino-dev
> Subject: [Kino-dev] 12bit audio bleep FIXED
> 
> 
> Hi,
> 
> for thouse using 12bit audio should try the following
> patch for fixing sound quality and audio bleeps in
> 32kHz 12bit mode. Patch is for libdv code
> (directory: YOUR_LIBDV_BASE_DIR/libdv).
> 
> ------- cut ------
> --- audio.c.orig        Fri Nov 16 22:59:57 2001
> +++ audio.c     Sat Nov 17 09:53:55 2001
> @@ -500,9 +500,11 @@
>        lsb   = inbuf[bp+2];
> 
>        y = ((msb_y << 4) & 0xff0) | ((lsb >> 4) & 0xf);
> -      if(y > 2047) y -= 4096;
> +      if(y == 2048) y = 4095;
> +      if(y > 2048) y -= 4096;
>        z = ((msb_z << 4) & 0xff0) | (lsb & 0xf);
> -      if(z > 2047) z -= 4096;
> +      if(z == 2048) z = 4095;
> +      if(z > 2048) z -= 4096;
> 
>        ysamples[i] = dv_upsample(y);
>        zsamples[i] = dv_upsample(z);
> ------- cut ------
> 
> 
> --
> 
> mfg
> 
>   Stefan Lucke (Ste...@ep...)
> 
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