CAE-USC V2.2 AIMs Audio Analysis Transform

1    Function

Audio Analysis Transform (CAE-AAT):

Receives	Multichannel Audio (Transform Format)
Transforms	Multichannel Audio into frequency bands via a Fast Fourier Transform (FFT). The following operations are carried out in discrete frequency bands. When such a configuration is used, a 50% overlap between subsequent audio blocks needs to be employed. The output is a data structure comprising complex valued audio samples in the frequency domain.
Determines	Audio Objects’ Spatial Attitudes
Produces	Audio Spatial Attitudes

2     Reference Architecture

Figure 1 depicts the Reference Architecture of the Audio Analysis Transform (CAE-AAT) AIM.

Figure 1 – Audio Analysis Transform (CAE-AAT) AIM

3    I/O Data

Table 9 specifies the Input and Output Data of the Audio Analysis Transform (CAE-AAT) AIM.

Table 9 – Audio Analysis Transform (CAE-AAT) AIM

Input	Description
Multichannel Audio	Multichannel Audio (with associate Microphone Array info)
Output	Description
Multichannel Audio (Trf)	The result of the application of the Fast Fourier Transform to the Multichannel Audio.

4    SubAIMs

No SubAIMs.

5. JSON Syntax

https://schemas.mpai.community/CAE1/V2.2/AIMs/AudioAnalysisTransform.json

6     Profiles

No Profiles