Re: [SoX-users] endlessly repeating self-built waveform ?

[Sergei S. <ser...@ya...>]

----- Original Message -----
> From: Doug Lee <dg...@dl...>
> To: Sergei Steshenko <ser...@ya...>; sox...@li...
> Cc: 
> Sent: Sunday, December 2, 2012 7:32 AM
> Subject: Re: [SoX-users] endlessly repeating self-built waveform ?
> 
> On Sat, Dec 01, 2012 at 07:36:31PM -0800, Sergei Steshenko wrote:
>>  Hello,
>>  suppose I've build a sound file (for simplicity, a .wav one) which 
> contains just one period of a periodic function.
>>  And the shape of that function is according to my needs, i.e. it's not 
> a shape readily available from 'sox'.
>>  Is there a way to endlessly repeat (infinite loop) playing of that single 
> period without gaps ? As if 'sox' is that special periodic function 
> signal generator.
> 
> I think the `repeat' option is what you want, though whether it's
> gapless for real-time use may depend on your hardware, and it's not
> infinite:
> 
> play file.wav repeat 99999
> 
> may be gapless on fast hardware, but
> 
> sox file.wav loop999.wav repeat 999
> 
> should be gapless in its creation of loop999.wav.
> 
> -- 
> Doug Lee                dg...@dl...                http://www.dlee.org
> SSB BART Group          dou...@ss...   http://www.ssbbartgroup.com
> "Innovation is hard to schedule." -- Dan Fylstra
>

So, if instead of 1 period I have, say, 100000 periods (several seconds), and taking into account that modern OSes cache files in RAM, should I expect rarer gap occurences ?

Thanks,
  Sergei.