• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
RE: low-pass and high-pass filter.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: low-pass and high-pass filter.


  • Subject: RE: low-pass and high-pass filter.
  • From: Waverly Edwards <email@hidden>
  • Date: Fri, 23 Dec 2016 22:29:58 +0000
  • Thread-topic: low-pass and high-pass filter.

Nigel Redmon wrote:

>>Maybe this will help? Use four biquads, each set to the same frequency, but with Q set as indicated by the calculator:

>>http://www.earlevel.com/main/2016/09/29/cascading-filters/

 

Evan Balster wrote:

>>It took me a while to get my head around digital filter design algorithms.

>>You'll need to do the following steps, which I recommend you research individually:

 

Both of these are EXCELLENT resources.  I’ve been looking into the cascading filters options that was suggested and I’ll work on implementing that, if I understand it correctly.

I will also look into the C++ library that was recommended as well.

 

In the process of researching what both of you said, I also found references to vDSP_biquad.  https://developer.apple.com/reference/accelerate/1450838-vdsp_biquad

It sounds like a great way to go but I just have a very surface level understanding so implementation will be challenging.

 

Thank you both very much,

 

 

W

 

 _______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden

  • Follow-Ups:
    • Re: low-pass and high-pass filter.
      • From: Nigel Redmon <email@hidden>
References: 
 >low-pass and high-pass filter. (From: Waverly Edwards <email@hidden>)
 >Re: low-pass and high-pass filter. (From: Nigel Redmon <email@hidden>)

  • Prev by Date: Re: low-pass and high-pass filter.
  • Next by Date: Re: low-pass and high-pass filter.
  • Previous by thread: Re: low-pass and high-pass filter.
  • Next by thread: Re: low-pass and high-pass filter.
  • Index(es):
    • Date
    • Thread