Search found 8 matches

by florian.ott
Wed Aug 09, 2017 8:48 am
Forum: Voice & Conferencing
Topic: Ways to improve the voice quality with xCORE Smart Microphone and XVSM-2000
Replies: 3
Views: 11233

Re: Ways to improve the voice quality with xCORE Smart Microphone and XVSM-2000

Hello, I would really like to get a feedback on the above test results. What are your experiences with the board? I am not sure, if the xCORE smart microphone is not the right choice for our purposes, if the reference implementation is not sufficient and should be adapted somehow or if this is just ...
by florian.ott
Thu Aug 03, 2017 3:56 pm
Forum: Voice & Conferencing
Topic: Ways to improve the voice quality with xCORE Smart Microphone and XVSM-2000
Replies: 3
Views: 11233

Ways to improve the voice quality with xCORE Smart Microphone and XVSM-2000

Hi, we selected the xCORE Smart Microphone and XVSM-2000 board for use in our project because of its noise suppression and the functionality to get the direction of arrival. We want to do speech to text recognition using the signal we receive via USB. Therefor the qualtity of the signal must be as g...
by florian.ott
Tue Jul 25, 2017 7:41 am
Forum: Development Tools and Programming
Topic: Low-level programming
Replies: 2
Views: 3653

Low-level programming

Hello, I started getting familiar with the XCORE Smart Microphone not long ago. I downloaded the xtimecomposer and the app usb audio. As I understood, this is an example implementation. All the libraries and xc extensions to the compiler give you a great abstraction of the hardware so that you mainl...
by florian.ott
Thu Jul 20, 2017 10:13 am
Forum: Getting started
Topic: XCORE Design with additonal microphones of different purposes
Replies: 9
Views: 8929

Re: XCORE Design with additonal microphones of different purposes

We would like to prototype our design on the existing microphone board by removing the buttons and LEDs and soldering additional microphones on the lines. "the active port with the smallest width wins" If we want to use the pins of the button (X0D02/3/8/9), we would just need to make sure,...
by florian.ott
Tue Jul 18, 2017 10:29 am
Forum: Getting started
Topic: XCORE Design with additonal microphones of different purposes
Replies: 9
Views: 8929

Re: XCORE Design with additonal microphones of different purposes

We did some more thinking about the pins and ports to use. The plan was to have 14 additional microphones. 8 microphones on LED pins X0D26 – X0D33 (LED_0 to LED_7) -> no problems here for the existing algrorithms, mapped to port XS1_PORT_8C. For the other microphones, we are still searching for a so...
by florian.ott
Wed Jul 05, 2017 10:38 am
Forum: Getting started
Topic: XCORE Design with additonal microphones of different purposes
Replies: 9
Views: 8929

Re: XCORE Design with additonal microphones of different purposes

Thanks again for your response. So this basically means we have to be creative with the placement of the tasks on the tiles. As I understood there are two options you mentioned. 1) it means that one of the PDM front ends MUST be on tile [1] 2) one of decimators must be on tile[1] and you will need t...
by florian.ott
Mon Jul 03, 2017 10:56 am
Forum: Getting started
Topic: XCORE Design with additonal microphones of different purposes
Replies: 9
Views: 8929

Re: XCORE Design with additonal microphones of different purposes

Thank you very much for the impressively fast response. The sample rate we wanted to achieve is 44 kHz. Or should we use the decimation factor 2 to get 48 kHz? We got a requirement of 44 by the speech recognition software. For the usage of LED ports, how about instead of LED 10...12 we use the expan...
by florian.ott
Wed Jun 28, 2017 9:17 am
Forum: Getting started
Topic: XCORE Design with additonal microphones of different purposes
Replies: 9
Views: 8929

XCORE Design with additonal microphones of different purposes

Hello, for our project (robotics) we want to extend the xCORE SMART MICROPHONE board with a lot of additonal microphones. The goals are the following: - have microphones for audio streaming for speech recognition - have separate microphones for direction of arrival information, which will be used by...