Re: [SoX-users] Click sound at the end of play-out

[Frank F. <fra...@gm...>]

I believe it can be solved either at SoX's side or at ALSA's side.

FYI, 
1) I am using SoX v14.0.0 and ALSA 1.0.15
2) No such artifact when I use "aplay" in ALSA utilities.
3) In another machine with SoX pre-14.0.0 and ALSA version 1.0.6, I can also
hear the click artifact. However, the pre-14.0.0 version play doesn't prvide
a --buffer option.

Thanks,
Frank

-----Original Message-----
From: sox...@li...
[mailto:sox...@li...] On Behalf Of Chris Bagwell
Sent: Saturday, November 03, 2007 9:53 AM
To: sox...@li...
Subject: Re: [SoX-users] Click sound at the end of play-out

Its not a bug I'm aware of. It could be a SoX bug but in my experience 
its usually an ALSA bug.

Do you have any other data points to help pinpoint it? Did it work on in 
SoX pre-14.0.0? Do other ALSA audio programs not have the problem? What 
is your sound driver?

I guess SoX team should at least check with ALSA team... I'm not aware 
of any requirements to send a complete buffer (padded with silence) even 
on the last buffer. Maybe the ALSA driver is playing random data from 
previous buffers to make up for it.

If you like, write a bug report on SoX's bug tracker.

Chris

Frank Fang wrote:
>
> Hi,
>
> I am using "play" to play sound clips. The version number is v14.0.0. 
> At the end of the playout, I can hear a small click artifact. After I 
> use "-buffer 1024" (by default, it is 8192), the click artifacts are 
> gone.
>
> Is this a known bug?
>
> Thanks,
>
> Zheng
>

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