2 citations · 4 across the 12 of their papers we have counts for
13 papers
Screening Matters: A Comparative Study of Conventional and Crowdsourced Listening Tests
Anika Treffehn, Andrea Eichenseer, Emily Kratsch +1
Subjective evaluation remains the most reliable way of testing speech and audio coding techniques. Crowdsourcing the listening task is a cost-efficient and fast way of conducting t…
UBGAN: Enhancing Coded Speech with Blind and Guided Bandwidth Extension
Kishan Gupta, Srikanth Korse, Andreas Brendel +2
In practical application of speech codecs, a multitude of factors such as the quality of the radio connection, limiting hardware or required user experience necessitate trade-offs…
On Improving Error Resilience of Neural End-to-End Speech Coders
Kishan Gupta, Nicola Pia, Srikanth Korse +3
Error resilient tools like Packet Loss Concealment (PLC) and Forward Error Correction (FEC) are essential to maintain a reliable speech communication for applications like Voice ov…
Neural Speech Coding for Real-time Communications using Constant Bitrate Scalar Quantization
Andreas Brendel, Nicola Pia, Kishan Gupta +3
Neural audio coding has emerged as a vivid research direction by promising good audio quality at very low bitrates unachievable by classical coding techniques. Here, end-to-end tra…
Low-Resource Text-to-Speech Using Specific Data and Noise Augmentation
Kishor Kayyar Lakshminarayana, Christian Dittmar, Nicola Pia +1
Many neural text-to-speech architectures can synthesize nearly natural speech from text inputs. These architectures must be trained with tens of hours of annotated and high-quality…
NESC: Robust Neural End-2-End Speech Coding with GANs
Nicola Pia, Kishan Gupta, Srikanth Korse +2
Neural networks have proven to be a formidable tool to tackle the problem of speech coding at very low bit rates. However, the design of a neural coder that can be operated robustl…
PostGAN: A GAN-Based Post-Processor to Enhance the Quality of Coded Speech
Srikanth Korse, Nicola Pia, Kishan Gupta +1
The quality of speech coded by transform coding is affected by various artefacts especially when bitrates to quantize the frequency components become too low. In order to mitigate…
A Streamwise GAN Vocoder for Wideband Speech Coding at Very Low Bit Rate
Ahmed Mustafa, Jan Büthe, Srikanth Korse +3
Recently, GAN vocoders have seen rapid progress in speech synthesis, starting to outperform autoregressive models in perceptual quality with much higher generation speed. However,…
StyleMelGAN: An Efficient High-Fidelity Adversarial Vocoder with Temporal Adaptive Normalization
Ahmed Mustafa, Nicola Pia, Guillaume Fuchs
In recent years, neural vocoders have surpassed classical speech generation approaches in naturalness and perceptual quality of the synthesized speech. Computationally heavy models…
Engel structures on complex surfaces
Nicola Pia, Giovanni Placini
We classify complex surfaces admitting Engel structures which are complex line bundles. Namely we prove that this happens if and only if has trivi…
On the dynamics of some vector fields tangent to non-integrable plane fields
Nicola Pia
Let be a smooth -distribution on a smooth manifold of dimension and a line field such that $[\mathcal{W},\mathcal…
Riemannian properties of Engel structures
Nicola Pia
This paper is about geometric and Riemannian properties of Engel structures, i.e. maximally non-integrable -plane fields on -manifolds. Two -forms and are called E…
Exotic holomorphic Engel structures on C4
Rui Coelho, Nicola Pia
A holomorphic Engel structure determines a flag of distributions . We construct examples of Engel structures on su…