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Groups > comp.lang.python > #28847

RE: Numpy combine channels

From Nick Cash <nick.cash@npcinternational.com>
Subject RE: Numpy combine channels
Date 2012-09-10 19:50 +0000
References <de5d9415-f3d8-47b9-bcc2-822dc57fd1d8@googlegroups.com>
Newsgroups comp.lang.python
Message-ID <mailman.464.1347307538.27098.python-list@python.org> (permalink)

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> I have an array generated by audiolab of left and right stereo
> channels. It looks like [[1,1],[1,2],[2,3]]. I would like to combine
> the left and right channels to get an array [2,3,5]. Is there a numpy
> command to do that?

You may be over-thinking this, and numpy might not be necessary.

A simple solution would be just a quick list comprehension:

stereo_array = [[1, 1], [1, 2], [2, 3]]
mono_array = [l+r for (l, r) in stereo_array]

Thanks,
Nick Cash

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Thread

Numpy combine channels Wanderer <wanderer@dialup4less.com> - 2012-09-10 12:39 -0700
  Re: Numpy combine channels Wanderer <wanderer@dialup4less.com> - 2012-09-10 12:56 -0700
  RE: Numpy combine channels Nick Cash <nick.cash@npcinternational.com> - 2012-09-10 19:50 +0000
  Re: Numpy combine channels MRAB <python@mrabarnett.plus.com> - 2012-09-10 21:11 +0100
    Re: Numpy combine channels Wanderer <wanderer@dialup4less.com> - 2012-09-10 13:14 -0700
      Re: Numpy combine channels Wanderer <wanderer@dialup4less.com> - 2012-09-10 13:15 -0700
      Re: Numpy combine channels Wanderer <wanderer@dialup4less.com> - 2012-09-10 13:15 -0700
    Re: Numpy combine channels Wanderer <wanderer@dialup4less.com> - 2012-09-10 13:14 -0700
    Re: Numpy combine channels aahz@pythoncraft.com (Aahz) - 2012-11-09 20:30 -0800
      Re: Numpy combine channels Dave Angel <d@davea.name> - 2012-11-10 08:05 -0500

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