Search found 11 matches

by inowatom
Thu Mar 02, 2017 3:14 pm
Forum: Getting started
Topic: Microphone array with more than 16 microphones
Replies: 7
Views: 7313

Re: Microphone array with more than 16 microphones

What do You think? I think it is possible (even with the hi-res delay) and you are pretty much there. Just move the delays across and you are done.. Something like this https://s22.postimg.org/agyfm5xct/IMG_20170302_084428.jpg Yes but even with the decimators on the tile 0 and the rest of additiona...
by inowatom
Wed Mar 01, 2017 7:30 pm
Forum: Getting started
Topic: Microphone array with more than 16 microphones
Replies: 7
Views: 7313

Re: Microphone array with more than 16 microphones

Actually, thinking about this further, you need to consider which parts of the system need to share memory. The decimators (mic_array_decimate_to_pcm_4ch) and app (hires_DAS_fixed() ) that receives the data via mic_array_get_next_time_domain_frame need to be on the same tile, because they exchange ...
by inowatom
Thu Feb 23, 2017 2:32 pm
Forum: Getting started
Topic: Microphone array with more than 16 microphones
Replies: 7
Views: 7313

Re: Microphone array with more than 16 microphones

Do i need to run the same code for tile 1? What about hires_DAS_fixed function? Do i have to have it on each tile? Yes, definitely. You can split your par into: par{ on tile[0]: par{ ... } on tile[1]: par{ ... } } ..with two top levels as above. It's as easy as that. Ok but what about hires_DAS_fix...
by inowatom
Thu Feb 23, 2017 12:07 pm
Forum: Getting started
Topic: Microphone array with more than 16 microphones
Replies: 7
Views: 7313

Microphone array with more than 16 microphones

Hi, I have a problem with my custom board and AN00218_app_hires_DAS_fixed example. So in my case 16 microphones are connected to tile 0 and are working fine, i can change delays, listen to the output audio but i want to increase the number of microphones to 24 or better 32. I have built my own versi...
by inowatom
Wed Feb 22, 2017 4:29 pm
Forum: Getting started
Topic: Microphone array with 16 microphones
Replies: 3
Views: 5406

Re: Microphone array with 16 microphones

You will need two of mic_array_hires_delay(); giving you something like: streaming chan c_pdm_to_hires_0_7[2], c_pdm_to_hires_8_15[2]; streaming chan c_hires_to_dec_0_7[2], c_hires_to_dec_8_15[2]; mic_array_pdm_rx(p_pdm_mics, c_pdm_to_hires_0_7[0], c_pdm_to_hires_0_7[1]); mic_array_pdm_rx(p_pdm_mic...
by inowatom
Mon Feb 20, 2017 3:59 pm
Forum: Getting started
Topic: Microphone array with 16 microphones
Replies: 3
Views: 5406

Microphone array with 16 microphones

Hi all, i have a problem with developing 16 microphone array. I have built my own version of xCORE Microphone Array, 8 mics are connected to 8C port and 8 mics are connected to 8D I use XEF216-512-TQ128-C20, i have changed makefile to it I use AN00218_app_hiress_DAS_fixed (1.0.3) as a start and it w...
by inowatom
Mon Feb 20, 2017 3:46 pm
Forum: Getting started
Topic: Problem with microphone array custom board
Replies: 9
Views: 7627

Re: Problem with microphone array custom board

OK, why do you think i can not connect microphones to port 8C? You must now review the full source code and confirm that the original source code developed for port 8B is properly working for your port 8C. Also be sure that no wider port that may be a superset of 8C is not broken due to the new por...
by inowatom
Fri Feb 10, 2017 3:39 pm
Forum: Getting started
Topic: Problem with microphone array custom board
Replies: 9
Views: 7627

Re: Problem with microphone array custom board

infiniteimprobability wrote:It would definitely help to use the right input port ;-)
OK, why do you think i can not connect microphones to port 8C?
by inowatom
Fri Feb 10, 2017 3:25 pm
Forum: Getting started
Topic: Problem with microphone array custom board
Replies: 9
Views: 7627

Re: Problem with microphone array custom board

I can observe data signals form mics and proper clocks and signals to DAC- CS43L21. clocks also except PLL_SYNC - i do not see any signal on this pin which is connected to pin 5 of CS2100-CP. By default, the CS2100 only passes through the MCLK for the lib_mic_array examples, so it doesn't need the ...
by inowatom
Fri Feb 10, 2017 3:17 pm
Forum: Getting started
Topic: Problem with microphone array custom board
Replies: 9
Views: 7627

Re: Problem with microphone array custom board

Hi. Have not yet worked with the same project but hope to soon if and when Seeed delivers on their version of this microphone array. ETA keeps changing on their website. I have built my own version of xCORE Microphone Array but with some differences: - I have no ethernet or usb IC on the board - 8 ...