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Title: US5822718: Device and method for performing diagnostics on a microphone
[ Derwent Title ]


Country: US United States of America

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7 pages

 
Inventor: Bakis, Raimo; Brewster, NY
Fado, Francis; Highland Beach, FL
Guasti, Peter John; Coral Springs, FL
Nassiff, Amado; Boynton Beach, FL

Assignee: International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 1998-10-13 / 1997-01-29

Application Number: US1997000790401

IPC Code: Advanced: H04R 29/00;
Core: more...
IPC-7: H04R 29/00;

ECLA Code: H04R29/00M;

U.S. Class: Current: 702/180; 381/026; 381/058; 381/111; 700/094;
Original: 702/180; 381/058; 381/026; 381/111; 364/400.01;

Field of Search: 364/571.01,400.01,710.12 381/058,59,60,150,26,111,95,122,168 704/200,211,212 345/978

Priority Number:
1997-01-29  US1997000790401

Abstract:     A device and method are disclosed which perform diagnostics on a microphone and display diagnostic information and instructions to a user. The invention uses a processor to create histograms of the PCM (Pulse Code Modulation) signal after removing any dc bias to determine signal and noise levels and ratios, as well as other parameters. Messages are generated and displayed by the device and method to inform a user that the microphone is working correctly or about possible malfunctions, such as low gain. The messages can advise the user on steps to take to correct the malfunctions, for example, to try a different adapter cable or plug.

Primary / Asst. Examiners: Barlow, Jr., John E.; Assouad, Patrick

Maintenance Status: E2 Expired  Check current status

INPADOC Legal Status: Show legal status actions

Family: None

First Claim:
Show all 21 claims
What is claimed is:     1. A method for performing diagnostics on a microphone connected to a computer, comprising the steps of:
  • converting analog signals received from the microphone to digital samples;
  • computing a range based on said digital samples;
  • creating a plurality of bins based on said range;
  • associating a counter with each of said plurality of bins;
  • placing said digital samples into one of said plurality of bins;
  • forming a histogram based on values of said counter in a predetermined time after the microphone is turned on;
  • determining percentiles from said histogram; and
  • determining diagnostic status of said microphone based on said percentiles.


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Forward References: Show 19 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (19)   |   Backward references (11)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 8pp US4346268  1982-08 Geerling   Automatic audiological analyzer
Get PDF - 10pp US4543537  1985-09 Kuhn et al.  U.S. Philips Corporation Method of and arrangement for controlling the gain of an amplifier
Get PDF - 12pp US4817158  1989-03 Picheny  International Business Machines Corporation Normalization of speech signals
Get PDF - 11pp US4969193  1990-11 Scott et al.  Scott Instruments Corporation Method and apparatus for generating a signal transformation and the use thereof in signal processing
Get PDF - 7pp US5247458  1993-09 Cabot  Audio Precision, Inc. Method and apparatus for testing a digital system for the occurrence of errors
Get PDF - 7pp US5400406  1995-03 Heline, Jr. et al.  Gentex Corporation Aircraft communication headset tester
Get PDF - 10pp US5414755  1995-05 Bahler et al.  ITT Corporation System and method for passive voice verification in a telephone network
Get PDF - 14pp US5418322  1995-05 Minamitaka  Casio Computer Co., Ltd. Music apparatus for determining scale of melody by motion analysis of notes of the melody
Get PDF - 20pp US5548647  1996-08 Naik et al.  Texas Instruments Incorporated Fixed text speaker verification method and apparatus
Get PDF - 8pp US5555300  1996-09 Gutzmer   Telephone handset microphone level adjustment
Get PDF - 5pp US5644505  1997-07 Soutar et al.  Delco Electronics Corporation Universal audio analyzer
       
Foreign References: None

Other References:
  • Lelie, US Statutory Invention Registration H413, "Microphone Output-Level Tester", Jan. 5, 1988.


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