Design and Evaluation of Accelerometer based Motional Feedback

Henrik Schneider; Emilio Pranjic; Finn T. Agerkvist; Arnold Knott; Michael A. E. Andersen

Design and Evaluation of Accelerometer based Motional Feedback

Henrik Schneider, Emilio Pranjic, Finn T. Agerkvist, Arnold Knott, Michael A. E. Andersen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

The electro dynamic loudspeaker is often referred to as the weakest link in the audio chain due to low efficiency and high distortion levels at low frequencies and high diaphragm excursion. Compensating for loudspeaker non-linearities using feedback or feedforward methods can improve the distortion and enable radical design changes in the loudspeaker which can lead to efficiency improvements. In combination this has motivated a revisit of the accelerometer based motional feedback technique. Experimental results on a 8 inch subwoofer show that the total harmonic distortion can be significantly reduced at low frequencies and large displacements.

Original language	English
Title of host publication	Proceedings of 138th International Audio Engineering Society (AES) Convention.
Number of pages	7
Publisher	Audio Engineering Society
Publication date	2015
Article number	9293
Publication status	Published - 2015
Event	138th International Audio Engineering Society (AES) Convention - Warsaw, Poland Duration: 7 May 2015 → 10 May 2015

Conference

Conference	138th International Audio Engineering Society (AES) Convention
Country	Poland
City	Warsaw
Period	07/05/2015 → 10/05/2015

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title = "Design and Evaluation of Accelerometer based Motional Feedback",

abstract = "The electro dynamic loudspeaker is often referred to as the weakest link in the audio chain due to low efficiency and high distortion levels at low frequencies and high diaphragm excursion. Compensating for loudspeaker non-linearities using feedback or feedforward methods can improve the distortion and enable radical design changes in the loudspeaker which can lead to efficiency improvements. In combination this has motivated a revisit of the accelerometer based motional feedback technique. Experimental results on a 8 inch subwoofer show that the total harmonic distortion can be significantly reduced at low frequencies and large displacements. ",

author = "Henrik Schneider and Emilio Pranjic and Agerkvist, {Finn T.} and Arnold Knott and Andersen, {Michael A. E.}",

year = "2015",

language = "English",

booktitle = "Proceedings of 138th International Audio Engineering Society (AES) Convention.",

publisher = "Audio Engineering Society",

note = "138th International Audio Engineering Society (AES) Convention ; Conference date: 07-05-2015 Through 10-05-2015",

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Design and Evaluation of Accelerometer based Motional Feedback. / Schneider, Henrik; Pranjic, Emilio; Agerkvist, Finn T.; Knott, Arnold ; Andersen, Michael A. E.

Proceedings of 138th International Audio Engineering Society (AES) Convention.. Audio Engineering Society, 2015. 9293.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Design and Evaluation of Accelerometer based Motional Feedback

AU - Schneider, Henrik

AU - Pranjic, Emilio

AU - Agerkvist, Finn T.

AU - Knott, Arnold

AU - Andersen, Michael A. E.

PY - 2015

Y1 - 2015

N2 - The electro dynamic loudspeaker is often referred to as the weakest link in the audio chain due to low efficiency and high distortion levels at low frequencies and high diaphragm excursion. Compensating for loudspeaker non-linearities using feedback or feedforward methods can improve the distortion and enable radical design changes in the loudspeaker which can lead to efficiency improvements. In combination this has motivated a revisit of the accelerometer based motional feedback technique. Experimental results on a 8 inch subwoofer show that the total harmonic distortion can be significantly reduced at low frequencies and large displacements.

AB - The electro dynamic loudspeaker is often referred to as the weakest link in the audio chain due to low efficiency and high distortion levels at low frequencies and high diaphragm excursion. Compensating for loudspeaker non-linearities using feedback or feedforward methods can improve the distortion and enable radical design changes in the loudspeaker which can lead to efficiency improvements. In combination this has motivated a revisit of the accelerometer based motional feedback technique. Experimental results on a 8 inch subwoofer show that the total harmonic distortion can be significantly reduced at low frequencies and large displacements.

M3 - Article in proceedings

BT - Proceedings of 138th International Audio Engineering Society (AES) Convention.

PB - Audio Engineering Society

T2 - 138th International Audio Engineering Society (AES) Convention

Y2 - 7 May 2015 through 10 May 2015

ER -