System and method for adjusting microphone gain based on volume setting of a mobile device

• US 20070253578A1
• Filed: 04/19/2006
• Published: 11/01/2007
• Est. Priority Date: 04/19/2006
• Status: Abandoned Application

• Current Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Verdecanna, Michael, Landron, David
• Application Number:
  US11/407,317
• Publication Number:
  US 20070253578A1
• Time in Patent Office: Days
• US Class Current: 381/104
• CPC Class Codes: H03G 3/10 having semiconductor devices
• CPC Class Codes: H03G 3/32 the control being dependent upon ambient noise level or sound level
• CPC Class Codes: H04M 1/2535 adapted for voice communication over an Internet Protocol [IP] network Voice over Internet Protocol (VoIP) network equipment and services H04M7/006; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04M 1/6008 in the transmitter circuit

Abstract

Described is a mobile device having a microphone to receive audible input and an audio circuit to transform the audible input into an electrical signal, the audio circuit including a variable gain amplifier to amplify the electrical signal, a gain of the variable gain amplifier being set based on a volume setting of the mobile device, the gain being inversely proportional to the volume setting.

Claims

1. A mobile device, comprising:

a microphone to receive audible input; and

an audio circuit to transform the audible input into an electrical signal, the audio circuit including a variable gain amplifier to amplify the electrical signal, a gain of the variable gain amplifier being set based on a volume setting of the mobile device.

2. The mobile device of claim 1, wherein the gain is inversely proportional to the volume setting.

3. The mobile device of claim 1, wherein the mobile device is one of a cellular phone, a VoIP enabled device, a PDA and a laptop computer.

4. The mobile device of claim 1, wherein the variable gain amplifier is one of an operational amplifier and an integrated circuit.

5. The mobile device of claim 1, wherein the variable gain amplifier includes a plurality of fixed gain amplifiers.

6. The mobile device of claim 1, wherein the volume setting is manually set by a user of the device.

7. The mobile device of claim 1, further comprising:

a memory storing a profile, the profile including the volume setting.

8. The mobile device of claim 1, further comprising:

noise measuring circuitry to measure an ambient noise level, the volume setting being based on the ambient noise level.

9. The mobile device of claim 1, wherein the audio circuit further includes one of a filter, a mixer, a modulator, and a transmitter.

10. The mobile device of claim 1, further comprising:

an echo suppressor system.

11. A method, comprising:

receiving an audible signal;

setting a gain of a variable gain amplifier, the gain being based on a volume setting of a mobile device in which the variable gain amplifier resides; and

converting the audible signal to an electrical signal, the converting including amplifying the electrical signal with the variable gain amplifier.

12. The method of claim 11, wherein the gain is set inversely proportional to the volume setting.

13. The method of claim 11, wherein the variable gain amplifier is one of an operational amplifier and an integrated circuit.

14. The method of claim 11, wherein the variable gain amplifier includes a plurality of fixed gain amplifiers.

15. The method of claim 11, further comprising:

receiving an input from a user of the mobile device to set the volume setting.

16. The method of claim 11, further comprising:

storing a profile, the profile including the volume setting.

17. The method of claim 11, further comprising:

measuring an ambient noise level; and

setting the volume setting being based on the ambient noise level.

21. The arrangement of claim 17, further comprising:

a means to set the volume setting.

18. An arrangement, comprising:

a receiving means to receive an audible input;

a transforming means to transform the audible input to an electrical signal, the transforming means including a variable gain means to provide the electrical signal with a variable gain based on a volume setting.

19. The arrangement of claim 18, wherein the variable gain is inversely proportional to the volume setting.

20. The arrangement of claim 18, further comprising:

a transmitting means to transmit the electrical signal.