Digital signal processor for processing voice messages

• US 6,691,081 B1
• Filed: 04/28/2000
• Issued: 02/10/2004
• Est. Priority Date: 04/13/1998
• Status: Expired due to Fees

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Huang, Jian-Cheng, Simpson, Floyd D., Finlon, Kenneth D.
• Primary Examiner(s): Dorvil, Richemond
• Application Number:
  US09/560,110
• Time in Patent Office: 1,383 Days
• Field of Search: 704/205, 704/207, 704/208, 704/206, 704/219, 704/200.1, 704/203, 704/200, 704/221, 704/226, 704/265, 704/268
• US Class Current: 704/207
• CPC Class Codes: G10L 13/02 Methods for producing synthetic speech; Speech synthesisers
• CPC Class Codes: G10L 13/0335 Pitch control
• CPC Class Codes: H04M 3/533 Voice mail systems

Abstract

A digital signal processor for processing data including voice messaging data that may have both voiced and unvoiced speech components utilizes computer routines stored in a memory used by the digital signal processor. The computer routines programmed provide for control of at least a portion of a selective call receiver; receiving and decoding data received at the selective call receiver; comparing the addresses received at the selective call receiver with addresses stored in a memory location coupled to the digital signal processor; controlling voicing including both voiced and unvoiced speech components; and generating a pitch wave using an inverse discrete Fourier Transform and resample the pitch wave to provide a time domain voiced speech component.

Claims

1. A digital signal processor for processing data including voice messaging data that may have both voiced and unvoiced speech components, comprising:

computer routines stored in a memory used by the digital signal processor, the computer routines programmed to;

control at least a portion of a selective call receiver;

receive and decode data received at the selective call receiver;

compare addresses received at the selective call receiver with addresses stored in a memory location coupled to the digital signal processor;

control voicing including both voiced and unvoiced speech components;

generate a pitch wave using an inverse discrete Fourier Transform and resample the pitch wave to provide a time domain voiced speech component.

2. The digital signal processor of claim 1, wherein the computer routines are further programmed to provide a time domain unvoiced speech component using an inverse discrete Fourier transform.

3. The digital signal processor of claim 2, wherein the time domain voiced speech component and the time domain unvoiced speech component are combined to form a speech signal for a current frame.

4. The digital signal processor of claim 3, wherein the speech signal from the current frame is combined with a speech signal from a previous frame using an overlap adder.