SS-Hybrid MVDR beamforming demo for the journal article

by Sina Hafezi

Scenario:

6 sec chunks from SPEAR D1 (real-recording EasyCom) & D2 (simulated EasyCom)
Categorised based on the number of active sources in the chunk
Sample rate: 10kHz, STFT frame size: 16ms, STFT frame step: 8ms
Array microphones: Channels 1 to 6. Array reference channel: 2 (front-middle mic).

List of Methods:

Ref: Reference Signal (D1: time- & level-aligned close-talking headset mic, D2: anechoic target @ the array's reference channel)
Pass: Un-processed signal
Iso: Isotropic MVDR (Superdirective)
SSH: Subspace-Hybrid MVDR (Parametric Dictionary)
SSHK: Subspace-Hybrid MVDR (Data-Driven Dictionary)

nSources: 1, Trial: 10, Session: 10, File: 28-00-653, Target ID: 6

nSources: 1, Trial: 11, Session: 11, File: 25-00-631, Target ID: 3

nSources: 1, Trial: 12, Session: 12, File: 22-00-569, Target ID: 4

nSources: 1, Trial: 14, Session: 2, File: 16-00-507, Target ID: 3

nSources: 1, Trial: 20, Session: 10, File: 07-00-389, Target ID: 6

nSources: 2, Trial: 03, Session: 3, File: 10-00-415, Target ID: 4

nSources: 2, Trial: 09, Session: 10, File: 01-00-304, Target ID: 6

nSources: 2, Trial: 10, Session: 12, File: 05-00-338, Target ID: 4

nSources: 2, Trial: 13, Session: 3, File: 08-00-387, Target ID: 6

nSources: 2, Trial: 20, Session: 10, File: 12-00-438, Target ID: 4

nSources: 3, Trial: 02, Session: 3, File: 05-00-352, Target ID: 6

nSources: 3, Trial: 07, Session: 10, File: 04-00-350, Target ID: 4

nSources: 3, Trial: 08, Session: 11, File: 05-00-388, Target ID: 7

nSources: 3, Trial: 14, Session: 10, File: 06-00-364, Target ID: 4

nSources: 3, Trial: 15, Session: 11, File: 20-00-568, Target ID: 3