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WAV to FIR filter coefficient of ADAU1467

SigmaDSP & SigmaStudio Andrew.Choi Nov 9, 2020 00:00 1 replies Original on forum ↗
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Andrew.Choi Question
Nov 9, 2020 00:00

Hi ADI's

One of my customer is trying to use the ADAU1467's FIR filter, but she has a problem.

1. The situation

1) The customer wants to apply the ADAU1467 FIR filter.

2) Using “Load table values”, we try to design the filter that the customer wants.

3) The filter data the customer wants is displayed as a “WAV file [impulse response]”.

2. Questions

1) Please tell me how the customer can load WAV files from “Load table values”.

2) If there is a filter coefficient provided by ADI, please.

ex. Sources like those used on the site below

http://s.shift-line.com/wav2fir/index.php

In summary, I would like to know how to extract coefficient values that can be used in sigmastudio's FIR filter from wav files.

Thank you

Edit Notes
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[edited by: Andrew.Choi at 5:23 AM (GMT -5) on 10 Nov 2020]

Audio Signal Processors

adau1467

SigmaDSP Audio Processors

op-electronics Reply
Nov 10, 2020 00:00

Hi Andrew,

i'm not from ADI.

You can use a simple audio editor like Audacity.

From Audacity: import the wav file and make sure the sampling rate of the current project matches the file. Under Analyze tab you can find "sample data export", fill in the fields as needed and export as a text file. Open text file and there you will find IR coefficients, copy and paste into FIR module.

Best

Omar