System and method for enhanced intelligibility of voice messages

• US 5,848,130 A
• Filed: 12/31/1996
• Issued: 12/08/1998
• Est. Priority Date: 12/31/1996
• Status: Expired due to Fees

• Current Assignee: AT&T Corporation (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Rochkind, Mark Meier
• Primary Examiner(s): Tsang, Fan S.
• Assistant Examiner(s): Hoosain, Allan
• Application Number:
  US08/777,833
• Time in Patent Office: 707 Days
• Field of Search: 379/67, 379/88, 379/89, 379/67.1, 379/88.01, 379/88.02, 379/88.04, 379/88.12, 379/88.22
• US Class Current: 379/88.01
• CPC Class Codes: G10L 19/00 Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis in musical instruments G10H
• CPC Class Codes: G10L 21/04 Time compression or expansion
• CPC Class Codes: H04M 1/6505 storing speech in digital form
• CPC Class Codes: H04M 1/652 Means for playing back the recorded messages by remote control over a telephone line H04M1/658 takes precedence
• CPC Class Codes: H04M 3/533 Voice mail systems

Abstract

A system and method is provided for playing back a recorded voice message, and, in particular, for automatically playing back a spoken numeric portion of the message at a rate that is slower than the rate for playing back the remaining portion of the recorded voice message. A voice messaging system receives and analyzes the voice message. Specifically, the messaging system determines whether the voice message includes spoken numeric information and, if so, determines the relative position of the spoken numeric information within the message. The computer system stores both the voice message and the positional information in a storage device. Upon playback of the message, the messaging system retrieves the stored voice message and positional information from the storage device. As the voice message is played back, the messaging system processes the positional information. When the positional information indicates that a particular portion of a voice message includes spoken numeric information, that particular portion is played back at a decreased speed.

Claims

1. A method for recording and playing a voice message, comprising the steps of:

a) receiving the voice message;

b) detecting at least one spoken number of interest, the at least one spoken number of interest being located at a variable position within the received voice message;

c) recording the voice message on a storage device;

d) retrieving the voice message from the storage device;

e) playing a remaining portion of the message at a first speed, wherein the remaining portion of the message does not include the detected at least one spoken number of interest; and

f) playing a spoken numeric portion of the message at a second speed, the spoken numeric portion including the detected at least one spoken number of interest wherein the second speed is slower than the first speed.

2. The method of claim 1 further comprising the steps of:

g) determining a position of the at least one spoken number of interest within the received voice message;

h) storing information related to the determined position on the storage device;

i) retrieving the stored information from the storage device; and

j) performing steps e) and f) as a function of the retrieved information.

3. The method of claim 2 wherein the voice message includes a plurality of audio samples and wherein the information is stored as a string of bits, each of the plurality of bits being associated with at least one of the plurality of audio samples within the voice message.

4. The method of claim 1 wherein the spoken number of interest includes spoken connected numeric digits.

5. A method for playing back a voice message, comprising the steps of:

a) receiving the voice message;

b) detecting at least one spoken number of interest, the at least one spoken number of interest being located at a variable position within the received voice message;

c) playing a (first) remaining portion of the voice message at a first speed, wherein the remaining portion of the voice message does not include the detected at least one spoken number of interest; and

d) playing a spoken numeric portion of the voice message at a second speed, the spoken numeric portion of the voice message including the detected at least one spoken number of interest, wherein the second speed is slower than the first speed.

6. The method of claim 5 further comprising the steps of:

e) determining a position of the at least one spoken number of interest within the received voice message;

f) generating a position signal as a function of the determined position; and

g) performing steps c) and d) as a function of the position signal.

7. The method of claim 6 wherein the received voice message includes a plurality of audio samples and wherein the position signal is a plurality of bits, each of the plurality of bits being associated with at least one of the plurality of audio samples.