AXIAL MODES

Report as inappropriate Your report has been received

Shared by: qingyunliuliu

Tags

Stats

views:: 3
posted:: 10/15/2011
language:: English
pages:: 3

Public Domain

Document Sample

Instructions

Room Mode Calculator
Operating Instructions
Axial Modes Mode Distribution
1. To access the axial modes calculator, click the AXIAL MODES Click on the MODE DISTRIBUTION tab located at the bottom
worksheet tab located at the bottom of this window. of this window. The room dimensions displayed are imported
2. Enter the room dimensions in feet, inches, or both. Your input from the AXIAL MODES worksheet. To change the dimensions,
is automatically applied to the MODE DISTRIBUTION calculator. go to AXIAL MODES, enter the new dimensions and return to
All calculations are automatically updated. MODE DISTRIBUTION.
3. The first four axial mode frequencies are displayed to the right of This worksheet provides a different, more detailed look at
the input fields. These are color-coded for easy identification. room modes. The graph displays the spectral distribution of
BLK=1st order RED=2nd BLU=3rd GRN=4th axial, tangential and oblique modes from 10Hz to 1kHz. This is
4. Additional comments and instructions are imbedded behind some most useful at the design stage, when you have an opportunity
cells. You will find a red tab in the upper right corner of such cells. to alter the room's geometry and speaker placement. It is the
To view the comment, move the mouse pointer over the cell. first step toward an analytical design approach. As a rule of
thumb, rooms with even spectral distribution of modes
are preferred. Rooms with mode clusters will sound colored or
exhibit uneven frequency response.

1 Customized Reports: If you wish to create a report, fill in the information fields below. This information will
automatically be included in the printout.

Dealer: Bob's Best Bet Client: Ida Claire
Address: 123 Nevermore Boulevard Address: 987 Somewhere Drive
Phone: 800.123.4567 Project: Attic intercom
e-mail: BBB@waitasec.com

8 Printing: Click the PRINTER icon or press [Ctrl+P] to make a hardcopy. The print formatting is preset for most hp
Deskjet printers. This works well in most cases, however, you may need to alter this setup to get perfect results.

Questions? Comments? Criticisms?
www.audiocontrol.com Is something unclear? Do you have an idea that would Dan@oneononetech.com
improve these worksheets? We welcome feedback.

10/15/2011 0d893dd0-e6b1-47a5-a0ab-46f0b88da595.xls
AXIAL MODE CALCULATOR
www.audiocontrol.com
Enter Room Dimensions 1st Through 4th Axial Mode Frequencies Dan@oneononetech.com
Feet Inches Meters 1st 2nd 3rd 4th
Height: 10 ft. 0 in. (120in.) 3.05M 57Hz 113Hz 170Hz 226Hz
Width: 0 ft. 216 in. (216in.) 5.49M 31Hz 63Hz 94Hz 126Hz
Length: 25 ft. 7 in. (307in.) 7.80M 22Hz 44Hz 66Hz 88Hz
Volume: 4605ft 3 130.4M 3
Enter speed of sound: 1131.0 ft/S (344.7M/S)
t Height: 120 in. u

< >15in. >20in. >30in. >45in. >60in.< 45in.< 30in.< 20in.< 15in.< >
226Hz 170Hz 113Hz 226Hz 170Hz 57Hz 226Hz 113Hz 170Hz 226Hz
t Width: 216 in. u

< >27in. >36in. >54in. >81in. >108in.< 81in.< 54in.< 36in.< 27in.< >
126Hz 94Hz 63Hz 126Hz 94Hz 31Hz 126Hz 63Hz 94Hz 126Hz
t Length: 307 in. u

< >38in. >51in. >77in. >115in. >154in.< 115in.< 77in.< 51in.< 38in.< >
88Hz 66Hz 44Hz 88Hz 66Hz 22Hz 88Hz 44Hz 66Hz 88Hz

Bob's Best Bet Report prepared for:
123 Nevermore Boulevard Ida Claire
800.123.4567 987 Somewhere Drive
BBB@waitasec.com Project:
Attic intercom

10/15/2011
Room Mode Spectral Distribution Calculator
by: Allan Devantier
Dimensions Length Width Height Volume
Cubic Cubic
Meters 7.80 5.49 3.05
Meters Feet
Inches 307 216 120 130.40 4605.0

Axial Mode Distribution

Length
Length
Width
Width
Height Height
All Axial

10 100 1000
Frequency (Hz)

All Mode Distribution
6
Tangential 5 Tan
Obl
Oblique 4
Length
Tan & Obl 3 Width
All 2 Height

1
10 100 1000
Frequency (Hz)

Bob's Best Bet Report prepared for:
123 Nevermore Boulevard Ida Claire
800.123.4567 987 Somewhere Drive
BBB@waitasec.com Project:
Attic intercom

10/15/2011