Comparison of Noise Compensation Methods for Room Acoustic Impulse Response Evaluations

Guski, Martin; Vorländer, Michael

doi:10.3813/aaa.918711

Cited by 30 publications

(27 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its performance has been systematically tested versus the most accredited literature method: the Schroeder's backward integration method with noise subtraction, truncation and correction. 17 The PPED method includes four steps. It extracts an envelope "locally matched" to the given impulse response which is different from the Schroeder's energy decay curve (compensated or not).…”

Section: Discussionmentioning

confidence: 99%

“…In Table I the EDT, T 15 and T 30 calculated over the IR shown in Fig. 3 with the Schroeder's compensated method 17 are compared with the ones extracted with the PPED method.…”

Section: A Test On a Linear Decaymentioning

confidence: 99%

“…The comparison of the compensated Schroeder's method 17,52 and the PPED method was further extended to different types of impulse responses.…”

Section: B Test On Other Common Decay Typesmentioning

confidence: 99%

“…[13][14][15][16] A recent review of these methods has been done by Guski and Vorl€ ander. 17 Other ways to extract the decay curve are based on neural networks, [18][19][20] segmentation procedures 21 or blind approaches. [22][23][24] Satoh et al 25 proposed a method to extract the reverberation time based on the envelope instead of the decay curve.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Extraction of the envelope from impulse responses using pre-processed energy detection for early decay estimation

Cesaris

D’Orazio

Morandi

et al. 2015

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

The Schroeder's backward integration method and its applications have been widely studied in the literature; some papers analyze the performance of the method, some others suggest various enhancement techniques. In spite of these findings, there exist several cases where the energy decay curve extracted using the classical backward integration method and the parameters computed from it seem not always representative of the phenomenon under study. Among them, the cases where the early decay is dependent on strong, distinct reflections occurring just after the direct wave, as in most Italian opera houses. Other cases are measured impulse responses with a very low signal-to-noise ratio or missing the direct wave. In the literature, alternatives to the Schroeder's method have been proposed, ranging from Hilbert transform to non-linear processing techniques. In this work a method for the extraction of the envelope based on pre-processed energy detection for early decay estimation is proposed. It is shown that it returns an envelope well matching the first part of the decay even in non-linear cases, returning detailed information on the first part of the decay. The performance of the proposed method is presented and discussed for some exemplary impulse responses measured in historical opera houses. A preliminary study on the perceptive relevance of the method is finally presented.

show abstract

Section: Discussionmentioning

confidence: 99%

“…In Table I the EDT, T 15 and T 30 calculated over the IR shown in Fig. 3 with the Schroeder's compensated method 17 are compared with the ones extracted with the PPED method.…”

Section: A Test On a Linear Decaymentioning

confidence: 99%

“…The comparison of the compensated Schroeder's method 17,52 and the PPED method was further extended to different types of impulse responses.…”

Section: B Test On Other Common Decay Typesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Extraction of the envelope from impulse responses using pre-processed energy detection for early decay estimation

Cesaris

D’Orazio

Morandi

et al. 2015

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

show abstract

“…Even if the impulse response measurement itself is not affected by uncertainties, the post-processing of impulse responses, involving filtering and integration algorithms for parameter estimation, contains various degrees of freedom, with significant effects on the determined results [25,26].…”

Section: Measurement Algorithmsmentioning

confidence: 99%

Room Acoustical Parameters as Predictors of Room Acoustical Impression: What Do We Know and What Would We Like to Know?

Weinzierl

Vorländer

2015

Acoust Aust

View full text Add to dashboard Cite

Room acoustical parameters are audio features, usually extracted from monaural or binaural measurements of room acoustical environments, and used to predict different aspects of the 'room acoustical impression'. The paper takes a closer look at the nature of this perceptional construct and at different approaches to develop a psychological measuring instrument for the multidimensional perceptional profile of room acoustical environments. Even after several decades of research, there is no satisfactory solution available for this purpose. The reasons for this lie in methodological deficits with respect to test development and item analysis as well as in a much too small sample of stimuli used in previous studies. Prospects for progress are opened up by state-of-the-art technologies for room acoustical simulation and auralization, which may be used to provide a large and representative sample of room acoustical environments as well as an authentic presentation in experimental studies. The fundamental perceptional components delivered by this approach will, most likely, not be predictable by traditional room acoustical parameters, but require advanced measurement techniques based on spherical arrays of transducers for both source and receiver characteristics, as well as new auditory models for feature extraction. The physical and psychological aspects of the problem are, in any case, inextricably linked with each other. Keywords Room acoustics • Measurement and simulation • Room acoustical perception 1 Rooms as Technical and Perceptual Objects In trying to capture the perceptual qualities of rooms, as a basis for room acoustical design or evaluation, one has to deal with the fact that rooms cannot be perceived as such, but only through their effect on the presented signal, the sound source, and the receiver involved. As with any other transmission system, its properties can only be studied in response to a given type of excitation. Assuming the room as a linear and time-invariant acoustical system, the output Y (ω) as the result of an excitation with the input signal X (ω) is given as S. Weinzierl () Audio Communication Group,

show abstract

Room Acoustics – Fundamentals and Computer Simulation

Vorländer

2018

Springer Handbook of Systematic Musicology

View full text Add to dashboard Cite

Comparison of Noise Compensation Methods for Room Acoustic Impulse Response Evaluations

Cited by 30 publications

References 0 publications

Extraction of the envelope from impulse responses using pre-processed energy detection for early decay estimation

Extraction of the envelope from impulse responses using pre-processed energy detection for early decay estimation

Room Acoustical Parameters as Predictors of Room Acoustical Impression: What Do We Know and What Would We Like to Know?

Room Acoustics – Fundamentals and Computer Simulation

Contact Info

Product

Resources

About