Audio Analysis Transform:
- Receives Multichannel Audio.
- Transforms Multichannel Audio into frequency bands via Fast Fourier Transform (FFT). The operations of the subsequent AIMs are carried out in discrete frequency bands. When such a configuration is used, a 50% overlap between subsequent Audio Blocks must be employed.
- Produces Transform Multichannel Audio, a data structure comprising complex valued audio samples in the frequency domain.
3 Reference Architecture
Figure 13 depicts the Reference Architecture of the Audio Analysis Transform AIM.
Figure 13 – The Audio Analysis Transform AIM
4 I/O Data
Table 8 specifies the Input and Output Data of the Audio Analysis Transform AIM.
Table 8 – I/O Data of the Audio Analysis Transform AIM
|The Audio output of the Microphone Array.
|Transform Multichannel Audio
|The result of the application of the Fast Fourier Transform to Multichannel Audio.
6 JSON Metadata