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  1. @[email protected] Thank you so much Dan. I had not any idea about Octave and other simulation tools. I will search and implement an audio test bench. Best regards.
  2. Thank you so much @[email protected] I could not write a test bench because i am working with audio signals. However, i have verified my convolution individually, i am sending convolution's source code and testbench. I have prepare project on Vivado 2018.2 and just used Nexys A7 board and a simple headset to listen output. It compiled without any error. When i tried to implement it to AudioDemo which was generated by here there is a significant noise. I have just edited AudioDemo.vhd for implementing convolution filter. I was tried to use chipscope and added to attachment. There was a critical error as; "[Timing 38-469] The REFCLK pin of IDELAYCTRL Inst_Audio/DDR/Inst_DDR/u_ddr_mig/u_iodelay_ctrl/u_idelayctrl_200 has a clock period of 5.053 ns (frequency 197.917 Mhz) but IDELAYE2 Inst_Audio/DDR/Inst_DDR/u_ddr_mig/u_memc_ui_top_std/mem_intfc0/ddr_phy_top0/u_ddr_mc_phy_wrapper/u_ddr_mc_phy/ddr_phy_4lanes_0.u_ddr_phy_4lanes/ddr_byte_lane_A.ddr_byte_lane_A/ddr_byte_group_io/input_[1].iserdes_dq_.idelay_dq.idelaye2 has REFCLK_FREQUENCY of 200.000 Mhz (period 5.000 ns). The IDELAYCTRL REFCLK pin frequency must match the IDELAYE2 REFCLK_FREQUENCY property." I also get filter parameters from MATLAB Filter Designer Tool, there is also an analog LPF on Nexys A7 board about 10kHz, and my filter seems about 5kHz, however no─▒se did not decrease. When i turned back the default demo, it works correctly. I have mentioned constraint file and MATLAB filter designer result. Best regards. konvolusyon_sinyal.vhd tb_konvolusyon_signal.vhd ornekler_paket.vhd AudioDemo.vhd Nexys-A7-100T-Master.xdc
  3. Hi, I am trying to establish a lowpass filter to Audio Demo code of Nexys A7 board. I have implemented a filter however i hear just a noise. If you share your time, i will be happy. I have added the project which was generated by Vivado 2018.2. Vivado Project Best regards.