Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
Announcements
FPGA community forums and blogs on community.intel.com are migrating to the new Altera Community and are read-only. For urgent support needs during this transition, please visit the FPGA Design Resources page or contact an Altera Authorized Distributor.
17268 Discussions

how to get the main frequency from digital data

Altera_Forum
Honored Contributor II
‎01-07-2016 01:01 PM
1,097 Views

I want to build a machine that I put into her audio (frequency of numbers) by a microphone and converts it into digital information and then converts it to the frequency domain and then I'll filter it and recognize the two main frequencies that make up the signal and accordingly I will write down the number that two of these frequencies represent. 

I was able to build a machine that converts the audio signal to digital but I do not know how to convert it in the frequency domain. 

 

Can anyone help me or direct me to a source of information? 

I work in quartus with the device of ALTERA DE2.
0 Kudos

Link Copied

1 Reply
Altera_Forum
Honored Contributor II
‎01-12-2016 07:26 AM
427 Views

Have a look at Altera's FFT core

0 Kudos
Copy link
Reply

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.