Sensitivity of stage acoustic parameters to source and receiver directivity: Measurements on three stages and in two orchestra pits

Wenmaekers, Rhc Remy; Hak, Ccjm Constant; Hornikx, Maarten; Kohlrausch, AG Armin

doi:10.1016/j.apacoust.2017.03.004

Cited by 9 publications

(8 citation statements)

References 19 publications

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“…The influence of the directionality of the source was performed in a study by Wang and Vingead [59] revealing that reverberation time (T30) changed very little across source types and orientations, while both EDT and C80 changed significantly. The same conclusion was found in another study [60], where the parameters dealing with early sound, such as EDT and C80, were more sensitive than the parameters dealing with late sound such as T20. These studies do not contradict the results reported in the previous subsection concerning the effect of directionality on the measurement of T for the 8 KHz octave band [30], since they present results only up to the 4 KHz octave band.…”

Section: Measurement Of Edt With a Handclapsupporting

confidence: 85%

“…Again, a possible explanation could be due to the directionality of the handclap and the effect that it has in the measurements of acoustic parameters. Previous mentioned studies [59,60] reveal that the effect of directionality was very profound in the calculation of C 80 .…”

Section: Suggested Steps For Measurements With a Handclap As An Acous...mentioning

confidence: 96%

“…As stated in the introduction, omnidirectionality of the handclap was studied by Griesinger [29] revealing directional characteristics. The effect that the directionality of the source has on the measurements of EDT can be found in some studies [59,60]. The influence of the directionality of the source was performed in a study by Wang and Vingead [59] revealing that reverberation time (T 30 ) changed very little across source types and orientations, while both EDT and C 80 changed significantly.…”

Section: Measurement Of C80 With a Handclapmentioning

confidence: 99%

“…Acoustics 2020, 2 FOR PEER REVIEW 18 mentioned studies [59,60] reveal that the effect of directionality was very profound in the calculation of C80. Another factor affecting measurement of C80 is the scattering effect of the person who performs the handclap.…”

Section: Measurement Of C 80 With a Handclapmentioning

confidence: 99%

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Handclap for Acoustic Measurements: Optimal Application and Limitations

Papadakis

Stavroulakis

2020

Acoustics

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Handclap is a convenient and useful acoustic source. This study aimed to explore its optimal application and limitations for acoustic measurements as well for other possible utilizations. For this purpose, the following steps were performed: investigation of the optimal hand configuration for acoustic measurements and measurements at different microphone source distances and at different spaces and positions. All measurements were performed with a handclap and a dodecahedron speaker for comparison. The results indicate that the optimal hand configuration (among 11) is with the hands cupped and held at an angle due to the superior low frequency spectrum. This configuration produced usable acoustic parameter measurements in the low frequency range in common room background levels unlike other configurations. The reverberation time was measured across different spaces and positions with a deviation less than three and just a noticeable difference of the signal-to-noise ratio within or near the ISO 3382-1 limits for each corresponding octave band. Other acoustic parameters (i.e., early decay time, clarity) were measured with greater deviations for reasons discussed in the text. Finally, practical steps for measurements with a handclap as an acoustic source are suggested.

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Section: Measurement Of Edt With a Handclapsupporting

confidence: 85%

Section: Suggested Steps For Measurements With a Handclap As An Acous...mentioning

confidence: 96%