Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Speech Activity Detection Based on Multilingual Speech Recognition
  System   To better model the contextual information and increase the generalization
ability of Speech Activity Detection (SAD) system, this paper leverages a
multi-lingual Automatic Speech Recognition (ASR) system to perform SAD.
Sequence discriminative training of Acoustic Model (AM) using Lattice-Free
Maximum Mutual Information (LF-MMI) loss function, effectively extracts the
contextual information of the input acoustic frame. Multi-lingual AM training,
causes the robustness to noise and language variabilities. The index of maximum
output posterior is considered as a frame-level speech/non-speech decision
function. Majority voting and logistic regression are applied to fuse the
language-dependent decisions. The multi-lingual ASR is trained on 18 languages
of BABEL datasets and the built SAD is evaluated on 3 different languages. On
out-of-domain datasets, the proposed SAD model shows significantly better
performance with respect to baseline models. On the Ester2 dataset, without
using any in-domain data, this model outperforms the WebRTC, phoneme recognizer
based VAD (Phn Rec), and Pyannote baselines (respectively by 7.1, 1.7, and 2.7%
absolute) in Detection Error Rate (DetER) metrics. Similarly, on the LiveATC
dataset, this model outperforms the WebRTC, Phn Rec, and Pyannote baselines
(respectively by 6.4, 10.0, and 3.7% absolutely) in DetER metrics.

24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat