Workshop Listening Test: Results

Size: px

Start display at page:

Download "Workshop Listening Test: Results"

Antony Lambert Wilson
10 years ago
Views:

1 Workshop Listening Test: Results Muziekcentrum Eindhoven Row 4, seat EK 13 April Vioolconcert nr 4 Master Class Room Acoustics for the Performing Arts april 2010 Eckhard Kahle

2 Introduction On 12, 13 and 14 april 2010 the master class Room Acoustics for the Performing Arts with Eckhard Kahle took place in the Laboratorium voor Akoestiek in Eindhoven. During the master class a workshop took place on the use of questionnaires to measure subjective acoustical parameters in a concert hall. The technique of performing questionnaires was first elucidated in various lectures and the background of the existing questionnaire developed at Ircam was treated. After that a workshop took place in the laboratory where participants listened to binaural recordings of pieces of music played back on a Yamaha Disklavier in the chamber music hall of Muziekcentrum Eindhoven. While listening to the samples through headphones seats were changed and different acoustical aspects were discussed. The final part of the workshop consisted of a visit to a concert in the large concert hall of Muziekcentrum Eindhoven. During the concert participants filled out the Ircam questionnaire at two different positions in the hall. The next day, results of the questionnaires were discussed within the group. In the next pages the concert hall is described and the results of the workshop are presented.

The technique of performing questionnaires was first elucidated in various lectures and the background of the existing questionnaire developed at Ircam was treated.

3 Introduction Orchestra: Symphony Orchestra of New Russia Yuri Bashmet, conductor Gidon Kremer, violin Works: - Vioolconcert nr 4 - Symfonie nr 6 Pathétique Date and Time: di 13 apr :15 uur Concert hall: Muziekcentrum Frits Philips Eindhoven Eindhoven Airport Zaal Seats: 1250 Volume: m³ Volume/seat: 11,5 m³/seat Stage area: 190 m² Architect: Van Aken Architecten (NL) Acoustics: Prof. P.A. de Lange and Ir. L.C.J. van Luxemburg lc a B Muziekcentrum Frits Philips Eindhoven - Concert Hall y n o

Eindhoven Airport Zaal Seats: 1250 Volume: 14.

4 Reverberation Time (s) Hall Parameters Empty Occupied Frequency (Hz) RT 1.9 2,1 s EDT s C db G db LEF lc a B y n o

5 Part 1: Perception of the Hall Part 2: Perception of the Sound Sources (+optional questions) Part 3: Spectral Balance Part 4: General Impressions

6 Perception of the Hall Very Strong Very Big Very Strong Very weak Very Small Very weak 0 Subjective Loudness Subjective dynamics Reverberance 1-6 scale 1-6 scale 1-6 scale

7 Perception of the Hall Big Strong Small Weak 0 Subj. Hall Size Subj. Envelopment 1-4 scale 1-4 scale

8 Coloration Intimate Warm Lively Brilliant 2 1 lack of intimacy lack of warmth dry lack of brill. 0 Intimacy Warmth Livelyness Brilliance 1-3 scale 1-3 scale 1-3 scale 1-3 scale

9 Coloration 2 1,0 YES 0,5 0,0 NO Muddy Heavy Acid Aggressive Hard

10 Perception of sound sources 7 6 Very close very clear 5 masking of the soloist 4 edgy fluid 3 2 precise strong 1 Very far diffuse weak very muddy flat stumbling masking of the orchestra 0 Sub. Distance Localization Presence Clarity Detail Att. 1 Detail Att. 2 Balance 1-6 scale 1-2 scale 1-2 scale 1-6 scale 1-4 scale 1-4 scale 1-5 scale

masking of the orchestra 0 Sub. Distance Localization Presence Clarity Detail Att.

11 Spectral Balance 4 3 strong 2 1 weak 0 Reverb Bass Freq Reverb High Freq Loudness Bass Freq Loudness High Freq 1-3 scale 1-3 scale 1-3 scale 1-3 scale

12 6 5 4 Very Good General Impressions 3 fair 2 1 Very Bad 0 General impression Overall Balance Adaptation of hall to music Musical interpretation Appreciation of music 1-5 scale 1-5 scale 1-5 scale 1-5 scale 1-5 scale

of hall to music Musical interpretation Appreciation

13 Discussion During the discussions is was shown that most participants found it hard to judge the acoustical aspects in the questionnaire. Among other things, the type and appreciation of the music seemed to be an important factor. Relation between the results of different parameters were also discussed and explained. It was made clear that for a more accurate and reliable measurement a larger group is needed that fill in the questionnaires. Also, to be able to compare different halls, it is important to have the same listening group and to calibrate the results of this group. Participants of the master class were encouraged to fill in the questionnaire during the upcoming concert visits. It proved to be a valuable tool for judging subjective room acoustical parameters.

It was made clear that for a more accurate and reliable measurement a larger group is needed that fill in the questionnaires.

Building Technology and Architectural Design. Program 4th lecture 9.00-9.45 Case studies Room Acoustics. 10.00 10.45 Case studies Room Acoustics

Building Technology and Architectural Design Program 4th lecture 9.00-9.45 Case studies Room Acoustics 9.45 10.00 Break 10.00 10.45 Case studies Room Acoustics Lecturer Poul Henning Kirkegaard 10-10-2006