Skip to content Skip to navigation

Connexions

You are here: Home » Content » Recording the Impulse Response of a Room

Navigation

Content Actions
  • Download module PDF
  • Add to ...
    Add the module to:
    • My Favorites
    • A lens
    • An external social bookmarking service
    • My Favorites (What is 'My Favorites'?)
      'My Favorites' is a special kind of lens which you can use to bookmark modules and collections directly in Connexions. 'My Favorites' can only be seen by you, and collections saved in 'My Favorites' can remember the last module you were on. You need a Connexions account to use 'My Favorites'.
    • A lens (What is a lens?)

      Definition of a lens

      Lenses

      A lens is a custom view of Connexions content. You can think of it as a fancy kind of list that will let you see Connexions through the eyes of organizations and people you trust.

      What is in a lens?

      Lens makers point to Connexions materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

      Who can create a lens?

      Any individual Connexions member, a community, or a respected organization.

      What are tags? tag icon

      Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

    • External bookmarks
  • E-mail the authors
  • Rate this module (How does the rating system work?)

    Rating system

    Ratings

    Ratings allow you to judge the quality of modules. If other users have ranked the module then its average rating is displayed below. Ratings are calculated on a scale from one star (Poor) to five stars (Excellent).

    How to rate a module

    Hover over the star that corresponds to the rating you wish to assign. Click on the star to add your rating. Your rating should be based on the quality of the content. You must have an account and be logged in to rate content.

    		(0 ratings)

Lenses

What is a lens?

Definition of a lens

Lenses

A lens is a custom view of Connexions content. You can think of it as a fancy kind of list that will let you see Connexions through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to Connexions materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual Connexions member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

This content is ...

Affiliated with (What does "Affiliated with" mean?)

This content is either by members of the organizations listed or about topics related to the organizations listed. Click each link to see a list of all content affiliated with the organization.
  • Rice University ELEC 301 Projects

    This module is included inLens: Rice University ELEC 301 Project Lens
    By: Rice University ELEC 301As a part of collection:"ELEC 301 Projects Fall 2005"

    Click the "Rice University ELEC 301 Projects" link to see all content affiliated with them.

Recently Viewed

This feature requires Javascript to be enabled.

Recording the Impulse Response of a Room

Module by: Chris Lamontagne, Bryce Luna

Summary: The methods used to collect data for use in sound deconvolution.

After obtaining the theoretical data we moved on to the measurements of the impulse response in both rooms and audio test trials. The equipment that was used for the measurements was as follows: a laptop computer, a pre amplifier, amplifier, speaker, and omnidirectional microphones. The microphones and source were placed in accordance with the locations we specified in the simulation software, given in rough estimate by the diagram.

Figure 1
Recording Setup
Recording Setup (301a.jpg)

The use of the laptop was necessary to not only record the test impulse response but as the source of the impulse and test audio. To avoid the difficulty of making an impulse sound physically, using a “clapper,” we generated an impulse digitally on the laptop with MATLAB. We used a piano tune as the input hoping to become slightly more cultured while working on our project. In order to properly record a significant number of reflections, very loud impulses and inputs were played. This most likely resulted in clipping, but was necessary to determine accurate responses.

Audio File: Impulse.wav
Audio File: Input.wav

The impulse and input audio are used to perform the deconvolution experiment. The impulse and the input signal were played in each of the rooms and the room responses to both of these were recorded in .wav format. We recorded both responses in two rooms, Duncan 1075 and a Will Rice College dorm room. We chose Duncan 1075 because it was the ELEC 301 classroom this year, and a generic dorm room should help all of the audiophile students get the best sound quality possible. We recorded two samples in each room, in case we found a null zone in one of the locations. The results are displayed on the next page.

Comments, questions, feedback, criticisms?

Send feedback