Help on speech recognition system!

Stefan George

Hello! I am creating an speech recognition system with the help of C6713 but i have a little question! I am using the demo aplication dsk_app.c ( located under /bsl/dsk_app ) and i whant to know: Do i need to overlap the frame for better accuracy? I am now taking a 256 sample frame in a ping buffer, process it and in the mean time the pong buffer is filled. Another question is regarded to the delta and double delta of the cepstrum. Who i can make this operation to be more efficient on this type of application(i mean the edma-ping pong buffers). Best regards, George!

over 15 years ago

0 desouza over 15 years ago

TI__Guru**** 171104 points

Stefan,

I am moving this post to the C6000 DSP forum, as they will probably have some people with more experience in the C67x device and the EDMA peripheral, ok?

Despite this, I don't think the accuracy will depend if the buffer is overlapping or you have two ping/pong buffers. The first approach will have a smaller memory usage while the second will guarantee more time to finish processing the buffer.

Best regards,

Rafael

0 Stefan George over 15 years ago in reply to desouza

Prodigy 75 points

Hello! there's no problem regarding moving my post, my bad at first. I have another question and i trully hope that i am not getting you bored. I have a 40 filters filter bank(computed similar to those from Sphinx 3) and i've computed the 13 mfcc size vector. Now i what to compute the delta and double delta derivatives. I know that delta = current-2 + current +2. could you give me a hint or something? Thank you very much!

0 Bao Doan over 13 years ago in reply to Stefan George

Prodigy 10 points

Hi George,

I am working with speech recognition now,

Can you give me your email to contact?

Mine is giabaodoan1320@gmail.com

Best regards!

Bao

Processors

Processors forum

Help on speech recognition system!