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2017 Nov 27
3
Reg an issue with smoothing factor in VAD implementation
Hi,
Can anyone let me know if this is a bug?
Thank you,
Chandrakala
----- Original Message -----
From: "Logan Stromberg" <loganstromberg at gmail.com>
To: "Chandrakala Madhira" <chandrakala.madhira at soctronics.com>
Cc: opus at xiph.org
Sent: Wednesday, November 22, 2017 12:12:39 PM
Subject: Re: [opus] Reg an issue with smoothing factor in VAD implementation
Yes, yes, I can reproduce it now, but only on platforms that define a 16-bit int by default (SA_...
2018 Feb 16
1
Reg an issue with smoothing factor in VAD implementation
...can't speak for the logic where the speech energy gets doubled. It
> obviously seems intentional but I don't know why. Maybe so that
> smoothing is performed at a constant rate regardless of whether
> framesize is 10 or 20ms?
>
> On Sun, Nov 26, 2017 at 8:07 PM, Chandrakala Madhira
> <chandrakala.madhira at soctronics.com
> <mailto:chandrakala.madhira at soctronics.com>> wrote:
>
> Hi,
>
> Can anyone let me know if this is a bug?
>
> Thank you,
> Chandrakala
>
> ----------------------------------------------...
2017 Nov 27
0
Reg an issue with smoothing factor in VAD implementation
...+ speech_nrg, SA_Q15);
I can't speak for the logic where the speech energy gets doubled. It
obviously seems intentional but I don't know why. Maybe so that smoothing
is performed at a constant rate regardless of whether framesize is 10 or
20ms?
On Sun, Nov 26, 2017 at 8:07 PM, Chandrakala Madhira <
chandrakala.madhira at soctronics.com> wrote:
> Hi,
>
> Can anyone let me know if this is a bug?
>
> Thank you,
> Chandrakala
>
> ------------------------------
> *From: *"Logan Stromberg" <loganstromberg at gmail.com>
> *To: *"Chandrakala...
2017 Nov 20
4
Reg an issue with smoothing factor in VAD implementation
Just for fun, I tried to reproduce such an overflow. I turned on all debug
macros, assertions, and checked arithmetic and then encoded 2 hours of
mixed speech/audio with these parameters:
Sample rate = 48000
Channels = 1
Application = OPUS_APPLICATION_AUDIO
Bitrate = 24 KB/s
Force Mode = MODE_SILK_ONLY
Signal Type = OPUS_SIGNAL_AUTO
Complexity = 10
Frame size = 480 samples (10ms)
No errors came
2017 Nov 22
0
Reg an issue with smoothing factor in VAD implementation
Yes, yes, I can reproduce it now, but only on platforms that define a
16-bit int by default (SA_Q15 is an opus_int rather than opus_int32). What
system are you compiling this for?
On Tue, Nov 21, 2017 at 8:34 PM, Chandrakala Madhira <
chandrakala.madhira at soctronics.com> wrote:
> Hi Logan,
>
> Please find attached the input stream we are using testing.
>
> Thank you,
> Chandrakala
>
> ------------------------------
> *From: *"Chandrakala Madhira" <chandrakala.madhira at soctroni...
2017 Nov 20
0
Reg an issue with smoothing factor in VAD implementation
Hi,
We are looking at the VAD implementation used in opus. We are looking at the code where speech probability is calculated based on which SNR is estimated. Below is the part of the code I am talking about.
/*********************************/
/* Speech Probability Estimation */
/*********************************/
SA_Q15 = silk_sigm_Q15( silk_SMULWB( VAD_SNR_FACTOR_Q16, pSNR_dB_Q7 ) -