Skip to main content
Article thumbnail
Location of Repository

The optimization of modal spacing within small rooms

By Matthew Wankling and Bruno Fazenda


The reproduction of audio in small rooms is significantly affected by room modes – resonant frequencies set up as a result of the geometry of the room. These frequency specific modes combine to form a unique frequency response for that room. This frequency response becomes part of the overall reproduction system, and as such, a poor response can have a detrimental effect on the listener’s enjoyment of the audio. Researchers have, therefore, consistently looked at how these modes affect our perception, and in particular, attempted to optimize the distribution of the modal frequencies so as to reduce the negative effects. A study is presented which determines an optimal frequency spacing between two adjacent modes which relates to the optimal listening scenario. This result is then discussed in the context of an objective measure which predicts a similar spacing and some remarks on how these results can be incorporated into optimization techniques

Topics: TA, QC
Publisher: University of Huddersfield
Year: 2008
OAI identifier:

Suggested articles


  1. (1981). A New Criterion for the Distribution of Normal Room
  2. (1956). A re-determination of the equal-loudness relations for pure tones,” doi
  3. (1985). A review of the MTF concept in room acoustics and its use for estimating speech intelligibility in auditoria doi
  4. (1997). An Introduction to the Psychology of Hearing,
  5. (1971). Dimension-Ratios of Rectangular Rooms with Good Distribution
  6. (2006). Loudspeakers and Rooms for Sound Reproduction—A Scientific Review,” doi
  7. (2006). Modulation transfer function as a measure of room low frequency performance,”
  8. (2005). Perception of Modal Distribution Metrics in Critical Listening Spaces-Dependence on Room Aspect Ratios,”
  9. (2004). Room Sizing and Optimization at Low Frequencies,”
  10. (2008). Source Placement for Equalization in doi
  11. (2006). Subjective assessment of the modulation transfer function as a means for quantifying low-frequency sound quality,”
  12. (2007). Thresholds of detection for changes to the Q factor of low-frequency modes in listening environments,”
  13. (1948). Vibration and sound, doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.