System Detail

AntSpeaker/MECT-B2

antspeaker-mect-b2-vb2-full-core

Submitted by: Public checkpoint

ranked review: approved AntSpeaker MECT-B2 MECT
Global position
#3 / 23
Scenario-macro EER
8.5599
Scenario-macro minDCF
0.321518
Trial-set coverage
26 / 26
Scenario top-three
7
Publicly ranked This result is included in the reviewed public ranking.
Model Provenance

Source and architecture

  • Displayed name: AntSpeaker/MECT-B2
  • Submitted by: Public checkpoint
  • Metadata: OpenSVBench model record
  • Source: AntSpeaker
  • Architecture: MECT-B2
  • Model family: MECT
  • Submitted alias: AntSpeaker/MECT-B2
  • Created at: 2026-10-19T05:05:41.317553+00:00
Training And Links

Training data and references

  • Training data: VoxCeleb2 dev + VoxBlink2
  • Training setup: MECT-B2 uses 80-dimensional mean-normalized log-Mel filterbanks at 16 kHz with a 25 ms window, 10 ms shift, and 20–7600 Hz band, followed by a four-stage CNN-Transformer with C=32, M=3, and Transformer width d=64. The model uses frame-level dense mixture-of-experts with four experts, weighted dense fusion, attentive statistics pooling, and a 192-dimensional projection trained with SphereFace2. The VoxCeleb2 + VoxBlink2 setting uses full training followed by large-margin fine-tuning without speed perturbation; the LMF stage uses VoxCeleb2.
  • Submission mode: full-core
  • Model source: Open link
  • Paper: MECT: Mixture of Experts with CNN-Transformer Network for Speaker Verification
Higher-Ranked Scenarios

Scenario ranks above the global position

Show 3 supporting trial sets
  • Lombard Grid Lombard: #1 on its trial-set ranking.
  • VoxCeleb1-E: #1 on its trial-set ranking.
  • VoxCeleb1-H: #1 on its trial-set ranking.
Lower-Ranked Scenarios

Scenario ranks below the global position

Show 3 supporting trial sets
  • GSC Short: #9 on its trial-set ranking.
  • GLOBE: #7 on its trial-set ranking.
  • CN-Celeb Genre: #7 on its trial-set ranking.
Scenario Rankings

Full ranking across scenarios

This table shows where the model sits on each scenario, using source-balanced scenario scores and the linked trial sets as evidence.

Scenario Rank Lens Evidence Score
In-The-Wild Robustness
How strong the model is on unconstrained celebrity and media speech across official CN-Celeb and VoxCeleb protocols.
#1/23 Leader
Open-domain media speech 0.0000 EER from leader
3.7217
0.130256 minDCF
Aging Robustness
How stable identity representations remain across age-derived and longitudinal recording gaps.
#2/23 Top 3
Speaker aging and time gaps 0.0600 EER from leader
1.8517
0.056173 minDCF
Cross-Lingual Robustness
How well speaker identity survives enrollment-test language mismatch.
#3/23 Top 3
Language mismatch 0.9634 EER from leader
2.6211
0.254113 minDCF
Distance Robustness
How much performance changes across meeting and domestic distance mismatch.
#3/23 Top 3
Distance mismatch 2.7938 EER from leader
8.0506
0.332292 minDCF
Overlap Robustness
How well speaker identity survives light, mid, and heavy overlap in both meeting and domestic recordings.
#3/23 Top 3
Overlapping speakers 0.8968 EER from leader
9.0061
0.442528 minDCF
Short-Duration Robustness
How much performance holds up when speech evidence is limited by duration.
#3/23 Top 3
Short-duration speech 1.7773 EER from leader
10.8119
0.429590 minDCF
Accent / Dialect Robustness
How reliably the model tracks identity across accent and dialect mismatch.
#3/23 Top 3
Accent and dialect variation 3.1692 EER from leader
19.9909
0.569899 minDCF
Noise / Reverb Robustness
How reliably the model preserves identity when room acoustics, distractor noise, and microphone placement deviate from an easier in-corpus reference condition.
#4/23 Competitive
Noise and reverberation 0.3940 EER from leader
2.6540
0.087120 minDCF
Channel / Device Robustness
How resilient the model is to device and channel mismatch.
#4/23 Competitive
Device and channel variation 5.0898 EER from leader
9.0921
0.435914 minDCF
Speaking-Style Robustness
Whether the model can preserve identity across emotion-driven change, whispered speech, and noise-induced Lombard speaking style.
#5/23 Competitive
Speaking style shift 1.0292 EER from leader
2.9458
0.150257 minDCF
Genre-Shift Robustness
Whether performance holds when CN-Celeb enrollment and test speech come from different source genres.
#7/23 Competitive
Source-genre variation 9.1400 EER from leader
23.4125
0.648552 minDCF
Trial-Set Results

Raw ranking by trial set

Expand this section to inspect the detailed trial-set rankings.

Show
Trial Set Rank Scenarios Trials Score
TidyVoiceX2-ASV
TidyVoiceX2-ASV
#3/23
Cross-lingual
200000
2.6211
0.254113 minDCF
HI-MIA
HI-MIA
#5/23
Short-duration
660000
3.7550
0.188360 minDCF
GSC Short
Google Speech Commands
#9/23
Short-duration
220000
8.8100
0.492470 minDCF
GLOBE
GLOBE
#7/23
Accent/dialect
56848
25.0484
0.505824 minDCF
CN-Celeb
CN-Celeb
#4/23
In-the-wild
3484292
7.0910
0.240625 minDCF
CN-Celeb Genre
CN-Celeb
#7/23
Genre shift
440000
23.4125
0.648552 minDCF
CN-Celeb Short
CN-Celeb
#7/23
Short-duration
546964
21.5288
0.637650 minDCF
VoxCeleb1-O
VoxCeleb1
#3/23
In-the-wild
37611
0.2287
0.011699 minDCF
VoxCeleb1-E
VoxCeleb1
#1/23
In-the-wild
579818
0.2901
0.016274 minDCF
VoxCeleb1-H
VoxCeleb1
#1/23
In-the-wild
550894
0.5387
0.031688 minDCF
VoxCeleb Short
VoxCeleb1
#1/23
Short-duration
394724
9.1539
0.399880 minDCF
3D-Speaker Device
3D-Speaker
#4/23
Channel/device
180000
12.5620
0.544773 minDCF
3D-Speaker Distance
3D-Speaker
#4/23
Distance
175163
12.3634
0.528588 minDCF
3D-Speaker Dialect
3D-Speaker
#4/23
Accent/dialect
180000
14.9333
0.633973 minDCF
FFSVC 2022 Cross-Channel
FFSVC 2022
#3/23
Channel/device
72000
5.6222
0.327056 minDCF
FFSVC 2022 Cross-Domain
FFSVC 2022
#3/23
Distance
66546
5.7764
0.333581 minDCF
Whisper40 Whisper
Whisper40
#5/23
Speaking style
17600
7.5625
0.354313 minDCF
Lombard Grid Lombard
Lombard Grid
#1/23
Speaking style
29524
0.0075
0.000373 minDCF
VOiCES Noise/Reverb
VOiCES
#4/23
Noise/reverb
55000
2.6540
0.087120 minDCF
CHiME-6 Domestic Far-Field
CHiME-6
#1/23
Distance
36487
6.2828
0.277510 minDCF
CHiME-6 Overlap
CHiME-6
#2/23
Overlap
39600
11.4389
0.570083 minDCF
ESD
ESD
#1/23
Speaking style
437408
1.2675
0.096087 minDCF
AliMeeting Near/Far
AliMeeting
#7/23
Distance
220000
7.7800
0.189490 minDCF
AliMeeting Overlap
AliMeeting
#5/23
Overlap
165000
6.5733
0.314973 minDCF
VoxKnesset
VoxKnesset
#2/23
Aging
158312
2.1800
0.086290 minDCF
VoxPopuli Aging
VoxPopuli
#3/23
Aging
146575
1.5235
0.026056 minDCF