Random triples
| Subject | Object |
|---|---|
| gptkb:Blumlein_Pair | bidirectional microphones |
| gptkb:Blumlein_pair | bidirectional microphones |
| gptkb:Decca_tree_microphone_technique | three omnidirectional microphones |
| gptkb:Blumlein_Pair_stereo_microphone_technique | two bi-directional microphones |
| gptkb:Decca_tree | three omnidirectional microphones |
| gptkb:Auto_Trueplay | true |