Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Audio Quality"”.
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Towards perceptual metrics for audio quality assessment
Recent years have seen considerable advances in audio synthesis with deep generative models known as Neural Audio Synthesizers (NAS). However, the state-of-the-art is very difficult to quantify directly; different studies use different evaluation methodologies and metrics when reporting results, …
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Objective assessment of audio quality using an auditory processing model
… method for the perceptual evaluation of quality differences between audio signals is presented. The core of this method is the computer model of the "effective" signal processing in the auditory system by Dau et al. (1997) which is employed to transform acoustic signals that are be …
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Evaluation and modelling of perceived audio quality in popular music, towards intelligent music production
… questions: What is mixing? What makes a high-quality mix? How can high-quality mixes be automatically generated? While these may seem essential to the very foundations of intelligent music production, this thesis argues that they have not been sufficiently addressed in previous studies. An …
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Objective Test Methods for Waveguide Audio Synthesis
… in their top of the line models. In the area of audio quality testing, the most common tests have traditionally been group listening tests. While these tests are subjective and can be expensive and time-consuming, the results are validated by the groups' proper quality standards. Research has …
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Sparse representation for audio noise removal using zero-zone quantizers
… of noise removal. PEAQ (Perceptual Evaluation of Audio Quality) scores have been used to measure the objective quality of the denoised signal.
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Real-Time and High-Quality Musical Audio Streaming Over IP
… requires addressing key challenges in real-time audio streaming over networks, including ultra-low latency, high reliability, and perceptual audio quality. One of the central components of the IoMusT paradigm is represented by Networked Music Performance (NMP) systems, which aim at enabling …
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Low delay audio coding based on logarithmic spherical vector quantization
… for the transmission and storage of speech and audio signals are nowadays based on digital technology. For specific applications, e.g., wireless microphones for live concerts, however, operation constraints are defined which only analog technology could fulfill. The most critical and often …
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Robust Speech Filter And Voice Encoder Parameter Estimation using the Phase-Phase Correlator
… practice, resulting in harsh or non-intelligible audio signals. In this paper, we propose a robust estimator of correlation, the Phase-Phase correlator that is able to cope with impulsive noise. Utilizing this correlator, we develop a Robust Mixed Excitation Linear Prediction encoder that provides …
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Speaker Anonymization using End-to-End Zero-Shot Voice Conversion
… VC models, which exhibit a trade-off between audio quality and accurate voice style transfer. Next, we present a method for extending targeted voice conversion to un-targeted voice anonymization. This is done by fitting a Gaussian mixture model (GMM) to the latent space of speaker embeddings …
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Investigating age-related differences in spatial presence formation and maintenance in virtual reality
… system (e.g., screen resolution, field of view, audio quality) has on the level of spatial presence that users experience in the virtual environment. The goal of this dissertation was to better understand the components of the full spatial presence process (i.e., formation and maintenance), …
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A Distortion Suppression Technique for a Digital Class D Audio Power Amplifier with Pulse Density Modulation
… in industry and academia have been optimizing audio amplifier designs with novel architectures to keep up with growing demands for high sound quality and improved power efficiency. Low power audio amplifiers for mobile phones and MP3 players, and high power amplifiers for portable speakers …
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Digitale Signalverarbeitung für Lautsprecher
… lead to a considerable enhancement of perceived audio quality, at least if directivity and the influence of room acoustics are not considered. Efficient protection against overloading is an indispensable task in the area of large-scale sound reinforcement and also very useful in home hi-fi …
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Sampling architectures for probabilistic inference
… proven to be effective in terms of perceived quality. However, these ML applications tend to be compute-intensive and create performance challenges. We focus on hardware accelerator architectures for inference on probabilistic graphical models, in particular for Markov random field (MRF) and …
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Assessing the Quality of Synthetic Speech when using Enhanced Speech as Training Data
… to train a speech synthesis model on the overall quality of the synthesised speech, and in doing so, gain a better understanding of the interactions between different speech enhancement algorithms, speech synthesis architectures, gender of the voice and the noise types that degrade the speech used …
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Medidas objetivas de localización de un evento sonoro para sistemas de teleconferencia
… con altavoces. El sistema de reproducción de audio que se va a estudiar está basado en el concepto de ventana acústica virtual. La ventana acústica virtual es un sistema de comunicaciones que recrea el Principio de Huygens. Lo que se pretende es hacer que entre dos salas (emisora y receptora, …