[en] The impulse response of an acoustical space or transducer is one of its most important characterizations. In order to perform the measurement of their impulse responses, four of the most suitable methods are compared: MLS (maximum-length sequence), IRS (inverse repeated sequence), time-stretched pulses, and SineSweep. These methods have already been described in the literature. Nevertheless, the choice of one of them depending on the measurement conditions is critical. Therefore an extensive comparison has been realized. This comparison was done through the implementation and realization of a complete, fast, reliable, and cheap measurement system. Finally, a conclusion for the use of each method according to the principal measurement conditions is presented. It is shown that in the presence of nonwhite noise, the MLS and IRS techniques seem to be more accurate. On the contrary, in quiet environments the logarithmic SineSweep method seems to be the most appropriate.
Kleiner M., Dalenbäck B.I., Svensson P. (1993) Auralization - An overview. J. Audio Eng. Soc. , (Nov.); 41:861-875.
Lehnert H., Blauert J. (1992) Principles of binaural room simulation. Appl. Acoust. 36:259-291.
Schroeder M.R. (1979) Integrated-impulse method for measuring sound decay without using impulses. J. Acoust. Soc. Am. 66:497-500.
Dunn C., Hawksford M.O. (1993) Distortion immunity of MLS-derived impulse response measurements. J. Audio Eng. Soc. , (May); 41:314-335.
Rife D.D., Vanderkooy J. (1989) Transfer-function measurement with maximum-length sequences. J. Audio Eng. Soc. , (June); 37:419-443.
Vanderkoov J. (1994) Aspects of MLS measuring systems. J. Audio Eng. Soc. , (Apr.); 42:219-231.
Alrutz H., Schroeder M.R. A fast Hadamard transform method for the evaluation of measurements using pseudorandom test signals. Proc. 11th Int. Conf. on Acoustics (Paris, France, 1983) 235-238.
Simpson H.R. (1966) Statistical properties of a class of pseudorandom sequence. Proc. IEE (London) 113:2075-2080.
Rife D.D. (1992) Modulation transfer function measurement with maximum-length sequence. J. Audio Eng. Soc. , (Oct.); 40:779-790.
Borish J., Angell J.B. (1983) An efficient algorithm for measuring the impulse response using pseudorandom noise. J. Audio Eng. Soc. , (July/Aug.); 31:478-488.
Bleakley C., Scaife R. (1995) New formulas for predicting the accuracy of acoustical measurements made in noisy environments using the averaged m-sequence correlation technique. J. Acoust. Soc. Am. 97:1329-1332.
Cohn M., Lempel A. (1977) On fast m-sequence transforms. IEEE Trans. Inform. Theory IT-23:135-137.
Davies W.D.T. (1966) Generation and properties of maximum-length sequences. Control.
Vorländer M., Kob M. (1997) Practical aspects of MLS measurements in building acoustics. Appl. Acoust. 52:239-258.
Burkard R., Shi Y., Hecox K.E. (1990) A comparison of maximum length and legendre sequences for the derivation of brain-stem auditory-evoked responses at rapid rates of stimulation. J. Acoust. Soc. Am. 87:1656-1664.
Ream N. (1970) Nonlinear identification using inverse-repeat m sequences. Proc. IEE (London) 117:213-218.
Briggs P.A.N., Godfrey K.R. (1966) Pseudorandom, signals for the dynamic analysis of multivariable systems. Proc. IEE 113:1259-1267.
Aoshima N. (1981) Computer-generated pulse signal applied for sound measurement. J. Acoust. Soc. Am. 65:1484-1488.
Suzuki Y., Asano F., Kim H.Y., Sone T. (1995) An optimum computer-generated pulse signal suitable for the measurement of very long impulse responses. J. Acoust. Soc. Am. 97:1119-1123.
Farina A., Ugolotti E. (1999) Subjective comparison between stereo dipole and 3d ambisonic surround systems for automotive applications. AES 16th International Conference on Spatial Sound Reproduction. HTTP://pcfarina.eng.unipr.it
Farina A. (2000) Simultaneous measurement of impulse response and distortion with a swept-sine technique. 108th Convention of the Audio Engineering Society, J. Audio Eng. Soc. (Abstract) , (Apr.), preprint 5093; 48:350.
Berkhout A.J., Boone M.M., Kesselman C. (1984) Acoustic impulse response measurements: A new technique. J. Audio Eng. Soc. , (Oct.); 32:740-746.
Borish J. (1985) Self-contained crosscorrelation program for maximum-length sequences. J. Audio Eng. Soc. (Engineering Reports) , (Nov.); 33:888-891.
Golomb S.W. Shift-Register Sequences, Rev. Ed., (Aegan Park Press, Laguna Hills, CA); 1982.
Oppenheim A.V., Schafer R.W. Discrete-Time Signal Processing, 2nd Ed., (Prentice-Hall Signal Processing Ser., Englewood Cliffs, NJ); 1999.
Preis D. (1982) Phase distortion and phase equalization in audio signal processing - a tutorial review. J. Audio Eng. Soc. , (Nov.); 30:774-794.
Pohlmann K.C. Principles of Digital Audio, 3rd Ed., (McGraw-Hill, New York); 1995.
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.