VOICE MODULATION RECOGNITION IN A RADIO-TO-SIP ADAPTER

• US 20080033719A1
• Filed: 08/03/2007
• Published: 02/07/2008
• Est. Priority Date: 08/04/2006
• Status: Active Grant

• Current Assignee: JPS Interoperability Solutions, Inc.
• Original Assignee: JPS Communications, Inc. (Rtx Corporation)
• Inventors: Hall, Douglas, Floyd, Daniel
• Granted Patent: US 8,090,575 B2
• Time in Patent Office: Days
• US Class Current: 704/233
• CPC Class Codes: G10L 2025/783 based on threshold decision
• CPC Class Codes: H04L 65/1026 at the edge
• CPC Class Codes: H04L 65/1036 at the edge
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]

Abstract

A radio-to-SIP adapter is shown to include a voice detection algorithm processor as well as other circuitry to provide an interface between a radio and SIP adapter to accommodate a transition from half duplex to full duplex and to cause a radio to transmit when human speech is present in an audio signal from a telephony network.

Claims

1. A radio-to-SIP adapter comprising:

a voice detection algorithm processor to detect the presence of human speech in an audio signal;

an audio input to receive an audio signal; and

a radio transmit indicator signal output to provide a signal to indicate that human speech is present in the audio signal.

2. The radio-to-SIP adapter as recited in claim 1 wherein the radio-to-SIP adapter is integrated with a SIP adapter.

3. The radio-to-SIP adapter as recited in claim 1 wherein the voice detection algorithm processor comprises a Texas Instrument TMS320VC5409 digital signal processor.

5. The method as recited in claim 3 wherein the audio signal is from a telephony network and the method is repeated to remain in sync with the human speech in the audio signal.

4. A method to cause a radio to transmit comprising:

monitoring an audio signal and processing said signal with a voice detection algorithm to detect the presence of human speech in the audio signal;

activating a radio transmit signal if human speech is detected to cause a radio to transmit audio; and

deactivating a radio transmit signal if human speech is not detected to cause a radio not to transmit audio.

6. A radio-to-SIP adapter comprising:

a voice detection algorithm processor to detect the presence of human speech in an audio signal;

an audio input to receive an audio signal from a telephony network;

a radio transmit indicator signal output to provide a signal to indicate that human speech is present in the audio signal and to cause a radio to transmit audio when human speech is present in the audio signal from the telephony network.