Active Noise cancellation System - Requirement/Queries

Venkadesan Shanmugam

Hi,

Please find our requirement/Queries below for the Active Noise Cancellation DSP:

1) It should support at least 2 MIC(Analog & Digital) and 1 Speaker (Approximately 1W to 3W) which works simultaneously.

2) Expecting the DSP to be programmable such that we can have in house developed algorithm ported.

3) Our final application is a real time system and therefore we are expecting very minimal delay between input/output (excluding the algorithm delay)

4) Expecting EVK to be available for the DSP which includes CCS, debugging tool

5) Expecting the audio sampling rate to be in the range from 8KHZ to 48KHZ and channels from mono to stereo.

6) Will the DSP support double precision algorithm directly or do we have to restricted to float operations

7) How is scheduling for input and output done on the DSP for real time applications.

Thanks for your support and hoping to receive a reply from you soon.

Regards,

Venkadesan.

over 9 years ago

0 Lalindra Jayatilleke over 9 years ago

TI__Mastermind 30365 points

Venkadesan,

I would suggest the C5517 which is a 200MHz device, but #6 might be an issue. This is a 16-bit fixed point DSP and floating point operations on C55x can be MIPS expensive. e2e.ti.com/.../384718

The EVM itself would satisfy all the other requirements. I would encourage you to take a look at the device and EVM user guide for yourself www.ti.com/.../tmdsevm5517 www.ti.com/.../TMS320C5517 There's an on-board debugger with CCS. You can use BIOS for scheduling the various components in your algo.

Another platform to consider is the C6748 (375- and 456-MHz C674x Fixed- and Floating-Point VLIW DSP). www.ti.com/.../TMS320C6748 The EVM processors.wiki.ti.com/.../C6748_Development_Kit_(LCDK) Interfacing the mics can be a little tricky depending on which audio channels that need to be support. But, please check this device out as well.

Hope this info helps.

Lali

0 Venkadesan Shanmugam over 9 years ago in reply to Lalindra Jayatilleke

Prodigy 85 points

Hi Lali,

We would prefer a Float DSP. So the First one - C5517 may not match with our requirement.

And i have gone through the C6748 Development Kit details and found Three AUDIO Ports (1 LINE IN & 1 LINE OUT & 1 MIC IN). what are the available Mic Interface in the Development Kit?

Regards,

Venkadesan.

0 Lalindra Jayatilleke over 9 years ago in reply to Venkadesan Shanmugam

TI__Mastermind 30365 points

Venkadesan,

I will move this thread to the C67x SIngle core forum for the experts on this device to chime in on the HW capabilities. Thanks.

Lali

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Active Noise cancellation System - Requirement/Queries