Speex dev - Feb 2008 - Can Speex frame size be expand from 160 to 320 for NB?

Hi Jean-Marc,

 

I want to know the possibility of expanding frame size from 160 to 320 for
narrow band. What is the side-effect if do so? How many changes involved for
the current code? 

 

Thanks ahead.

 

BRs,

Dennis

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Dennis Liu wrote:
> I want to know the possibility of expanding frame size from 160 to 320
> for narrow band. What is the side-effect if do so? How many changes
> involved for the current code?
spx_int16_t my_buffer[320];
speex_encode_int(encoder, my_buffer, bits);
speex_encode_int(encoder, my_buffer+160, bits);

done

Cheers,

	Jean-Marc

Thank you so much for your quick reply.

It looks quite easy to change it. But, how about those codebook and excite
table? I notice them have been fixed as the length of 160.

Thanks again,
Dennis

-----Original Message-----
From: Jean-Marc Valin [mailto:jean-marc.valin@usherbrooke.ca] 
Sent: Wednesday, February 13, 2008 4:03 PM
To: Dennis Liu
Cc: speex-dev@xiph.org
Subject: Re: [Speex-dev] Can Speex frame size be expand from 160 to 320 for
NB?

Dennis Liu wrote:
> I want to know the possibility of expanding frame size from 160 to 320
> for narrow band. What is the side-effect if do so? How many changes
> involved for the current code?
spx_int16_t my_buffer[320];
speex_encode_int(encoder, my_buffer, bits);
speex_encode_int(encoder, my_buffer+160, bits);

done

Cheers,

	Jean-Marc