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ambisonic binaural decoder
Description
Ambisonic Binaural Decoder:
In this plug-in, four speaker feeds are derived from an Ambisonic sound field, and those feeds are convolved with the corresponding HRTF for those speaker positions. The speaker positions are 0, 90, 180, and 270 degrees. Since the left and right ear HRTF are the same at 0 degrees, there is one less convolution required. Same applies for the rear 180 degree position, avoiding a total of two convolutions as opposed to eight required if the speakers were positioned at 45, 135, 225, and 315 degrees.
While this method requires less processing power, it does not 'seem' to provide as clear a sound field as when decoding speaker feeds with positions 45, 135, 225, and 315. More trials need to be done into this.
Even though it uses the compact 128 tap HRTF set available from the MIT Media Lab instead of the full 512 tap set, it uses straight convolution as opposed to FFT convolution, and as a result is quite CPU intensive ...
free vst plugin, pc.
VST and AU (Audio Unit) plug-ins for audio applications, along with dissertations on topics such Ambisonics, Quad, Java audio programming, and more.
In this plug-in, four speaker feeds are derived from an Ambisonic sound field, and those feeds are convolved with the corresponding HRTF for those speaker positions. The speaker positions are 0, 90, 180, and 270 degrees. Since the left and right ear HRTF are the same at 0 degrees, there is one less convolution required. Same applies for the rear 180 degree position, avoiding a total of two convolutions as opposed to eight required if the speakers were positioned at 45, 135, 225, and 315 degrees.
While this method requires less processing power, it does not 'seem' to provide as clear a sound field as when decoding speaker feeds with positions 45, 135, 225, and 315. More trials need to be done into this.
Even though it uses the compact 128 tap HRTF set available from the MIT Media Lab instead of the full 512 tap set, it uses straight convolution as opposed to FFT convolution, and as a result is quite CPU intensive ...
free vst plugin, pc.
VST and AU (Audio Unit) plug-ins for audio applications, along with dissertations on topics such Ambisonics, Quad, Java audio programming, and more.
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Date
Feb 23, 2006
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Link ID
12929
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