HOA Tutorial Exercise 08:
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HOA Tutorial Exercise 08
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Recording the b-format within the proxy space.

Previous: Exercise_07_HOA_beamforming

Next: Exercise_09_HOA_interfacing_VBAP_and_Ambisonics

The example below shows how to record the b-format within the proxy space.

In case you have not done so yet: let's start the sound server, which we configure first to get more audio buses and to have 36 output channels.

Start the oscilloscope showing all the channels for the selected order of the b-format.

Let's make a node that picks up the SoundIn (microphone) and spatializes it in a HOA signal we spatialize it a spherical wave and we have it move vertically and change the distance with oscillators

Then we make the usual decoding and listening node and we connect them

Open the recording file, start recording, unpause, pause and, when finished, close the file:

Normalize the resulting sound file, evaluate line by line:

Now let's listen to the recorded sound file by opening it first:

Then we change the ~hoaSignal.source to play back the sound file, and we want to just pass the signal through the transformer without additional rotation:

Finally we delete the files:

Previous: Exercise_07_HOA_beamforming

Next: Exercise_09_HOA_decoding_for_speaker_arrays