Convert PCM Data to wav

Shashank Jagadish

Other Parts Discussed in Thread: CC3200AUDBOOST, CC3200

Dear Community,

I have CC3200 board and CC3200AUDBOOST it has TLV320AIC3254, I am able to convert audio from mic to raw pcm data,

I want to convert raw pcm to wav or flac or mp3 so that i can send it to google for recognition

Can you please help me

Regards

Shashank

over 8 years ago

0 Diego Melendez over 8 years ago

TI__Guru 57800 points

Hi, Shashank,

Welcome to E2E, Thanks for your interest in our products!.

Unfortunately, We don't have an IC capable of converting PCM data to a different format, you might need a processor with enough capabilities of doing so or an encoding software.

Best Regards,

-Diego Meléndez López
Audio Applications Engineer

0 Shashank Jagadish over 8 years ago in reply to Diego Melendez

Prodigy 90 points

Hi Diego,

We are very new to Audio Processing, We are planning to implement Voice Recognition to one of our products

The goal of this project is that our product will have a mic and will be continuously listening to the stream looking for a keyword ex: Ok Google

Once the keyword is detected it should start recording the data from mic and send to the google servers for conversion from speech to text

Kindly help us in this aspect , How should we get started ? What processors or codecs should we be looking at ?

Regards
Shashank

0 LeonardEllis over 8 years ago in reply to Shashank Jagadish

TI__Guru 71526 points

Shashank,

Please refer to this E2E post for Voice Recognition: https://e2e.ti.com/support/dsp/c5000/f/109/p/567381/2080035#2080035 .

And this BLOG: https://e2e.ti.com/blogs_/b/msp430blog/archive/2016/11/08/mcu-s-can-recognize-what-you-say .

0 Shashank Jagadish over 8 years ago in reply to LeonardEllis

Prodigy 90 points

Hello Leonard,

Thank you I have gone through the links, Today we have decided that Voice processing should be done Offline

The C5535 eZdsp uses TIESR gforge.ti.com/.../ . We tried to register in this website for access but we never got any activation emails from them. Is this project Dead ?

Also if we use this in our project and assume I need 50 Individual words to be stored how much memory is required ? Is there a way to calculate ?

Kindly help us get access to TIESR asap

Regards
Shashank

0 LeonardEllis over 8 years ago in reply to Shashank Jagadish

TI__Guru 71526 points

Hi Shashank,

I see the software is directly downloadable from this Product page: http://www.ti.com/tool/TIDEP0066 .

There is a Design Guide and other reference material here as well.

~Leonard

0 Shashank Jagadish over 8 years ago in reply to LeonardEllis

Prodigy 90 points

Hello Leonard,

Thanks, I have downloaded and i will go through

Does this DSP support Over the Air updates ? How much memory can be interfaced with it ?

Regards
Shashank

0 Lalindra Jayatilleke over 8 years ago in reply to Shashank Jagadish

TI__Mastermind 30365 points

Shashank,

As Leonard has mentioned, please take a look at the TIesr TI design. Have you decided on a DSP? The TI design is based on the C5535 ezdsp, but it can also work on the C5545 DSP. C5000 has an e2 forum e2e.ti.com/.../109 for followup questions.

Please keep in mind that the TIesr TI design is for demo purposes only and not meant to be used in a production system. We do work with 3rd parties that can provide a much more robust voice recognition library. When ready to cross that bridge, please reach out to your TI sales rep and they can relay more info.

Hope this gets you going. Thanks.

Lali

0 Shashank Jagadish over 8 years ago in reply to Lalindra Jayatilleke

Prodigy 90 points

Hi Lalindra,

We havent decided on a DSP yet, Can you let us know who are these 3rd parties who can provide robust voice recognition library ? How can we get in touch with them ?

We will use the DSP which ever suits the voice recognition library, What do you say ? We need around 100 words to be recognized Offline without internet

Regards
Shashank

0 Shashank Jagadish over 8 years ago in reply to Shashank Jagadish

Prodigy 90 points

Dear TI team ,

Any update on the above ?

Regards

Shashank

0 Lalindra Jayatilleke over 8 years ago in reply to Shashank Jagadish

TI__Mastermind 30365 points

Shashank,

We have not tested more than 2 words on TIesr running on the C5535 dsp, so its hard to say for certain that this DSP would be a good fit.

Some things to consider in this case is the space that's needed on the device when the vocabulary is expanded to accommodate more words. Also, MIPS overhead with this large library. You also want acoustically unique words for all 100 words so that you avoid several sounding alike.

I would suggested getting a C5535 eZdsp, adding more words to TIesr and evaluate performance as you scale the vocabulary.

Is there a TI rep or FAE that you are working with already?

Lali

Audio

Audio forum

Convert PCM Data to wav