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The Role of Modal Excitation in Colorless Reverberation

A method to generate and evaluate colorless artificial reverberation with feedback delay networks (FDNs) is proposed. The coloration of the reverberation tail is quantified by the modal excitation distribution derived from the modal decomposition of …

One-to-Many Conversion for Percussive Samples

A filtering algorithm for generating subtle random variations in sampled sounds is proposed. Using only one recording for impact sound effects or drum machine sounds results in unrealistic repetitiveness during consecutive playback. This paper …

Fade-In Control For Feedback Delay Networks

In virtual acoustics, it is common to simulate the early part of a Room Impulse Response using approaches from geometrical acoustics and the late part using Feedback Delay Networks (FDNs). In order to transition from the early to the late part, it is …

Towards Transfer-Plausibility for Evaluating Mixed Reality Audio in Complex Scenes

The evaluation of mixed reality audio is typically approached under the paradigms of either authenticity or plausibility. While the first refers to the identity of a real and a virtualized sound source, the latter measures the degree of belief in …

String in a Room

Physical accuracy of virtual acoustics receives increasing attention due to renewed interest in virtual and augmented reality applications. So far, the modeling of vibrating objects as point sources is a common simplification which neglects effects …

Evaluation of Reverberation Time Models with Variable Acoustics

Reverberation time of a room is the most prominent parameter considered when designing the acoustics of physical spaces. Techniques for predicting reverberation of enclosed spaces started emerging over one hundred years ago. Since then, several …

FDNTB: The Feedback Delay Network Toolbox

Feedback delay networks (FDNs) are recursive filters, which are widely used for artificial reverberation and decorrelation. While there exists a vast literature on a wide variety of reverb topologies, this work aims to provide a unifying framework to …

Velvet-noise Feedback Delay Network

Artificial reverberation is an audio effect used to simulate the acoustics of a space while controlling its aesthetics, particularly on sounds recorded in a dry studio environment. Delay-based methods are a family of artificial reverberators using …

Towards Measuring Intonation Quality of Choir Recordings: A Case Study on Bruckner's Locus Iste

Unaccompanied vocal music is a central part of Western art music, yet it requires excellent skills for singers to achieve proper intonation. In this paper, we analyze intonation deficiencies by introducing an intonation cost measure that can be …

Dense Reverberation with Delay Feedback Matrices

This paper received the [Best Paper Award](http://waspaa.com/). Feedback delay networks (FDNs) belong to a general class of recursive filters which are widely used in artificial reverberation and decorrelation applications. One central challenge in …