NON-CONTACT VAD WITH AN ACCELEROMETER, ALGORITHMICALLY GROUPED MICROPHONE ARRAYS, AND MULTI-USE BLUETOOTH HANDS-FREE VISOR AND HEADSET
Electronic hardware, software, wired and/or wireless network communications, Bluetooth systems, RF systems, self-powered wireless devices, signal processing, audio transducers, accelerometers, and consumer electronic (CE) devices for a wireless portable headset and a portable wireless speaker phone that the wireless portable headset docks with and communicates with are disclosed. The headset and speaker phone may wirelessly communicate with each other (e.g., Bluetooth radios or other) when docked, un-docked, or both. When docked, an internal rechargeable power source in the speaker phone may recharge another internal rechargeable power source in the headset (e.g., rechargeable Lithium-Ion type batteries). A USB connector or the like may be used to electrically communicate power between the internal rechargeable power sources and may communicate other signals, such as signals from one or more microphones to form a microphone array (e.g., when docked). Magnet(s) may be used to facilitate/retain docking of the headset with the speaker phone.
1 . A wireless system, comprising:
a wireless portable headset operative to be worn on a body of a user and including a first microphone, a first speaker, a first internal rechargeable power source, a first charging structure electrically coupled with the first internal rechargeable power source, and a first radio transceiver;
a portable wireless speaker phone having a second internal rechargeable power source, a second speaker, a second microphone, a second radio transceiver, an integrated structure for receiving the wireless portable headset, and a second charging structure electrically coupled with the second internal rechargeable power source,
the first and second charging structures operative to electrically couple the first and second internal rechargeable power sources with each other when the wireless portable headset is positioned in the integrated structure, wherein electrical power from the second internal rechargeable power source charges the first internal rechargeable power source when the wireless portable headset is positioned in the integrated structure.
2 . The wireless system of claim 1 and further comprising:
at least one display positioned on the portable wireless speaker phone and operative to display status information on the portable wireless speaker phone, the wireless portable headset, or both.
3 . The wireless system of claim 2 , wherein the at least one display is operative to display status information on a charge state of the first internal rechargeable power source when the wireless portable headset is docked in the portable wireless speaker phone.
4 . The wireless system of claim 2 , wherein the at least one display is operative to display status information on a charge state of the second internal rechargeable power source.
5 . The wireless system of claim 4 , wherein the status information on the charge state of the second internal rechargeable power source is displayed when the wireless portable headset is docked in the portable wireless speaker phone.
6 . The wireless system of claim 2 , wherein the at least one display is operative to display Bluetooth (BT) pairing status of the wireless portable headset, the portable wireless speaker phone, or both.
7 . The wireless system of claim 1 , wherein the first and second charging structures comprise USB connectors.
8 . The wireless system of claim 1 , wherein the first and second radio transceivers comprise Bluetooth (BT) radio transceivers.
9 . The wireless system of claim 8 , wherein the portable wireless speaker phone and the wireless portable headset are BT paired with each other when the wireless portable headset and the portable wireless speaker phone are docked with each other, are not docked with each other, or both.
10 . The wireless system of claim 1 , wherein when the wireless portable headset is positioned in the integrated structure, the first microphone is in communication with signal processing circuitry in the portable wireless speaker phone, the signal processing circuitry and signal processing algorithms executed by the signal processing circuitry are operative to process audio signals from both the first and second microphones.
11 . The wireless system of claim 10 , wherein the first and second microphones are operative as a microphone array having a plurality of microphones, when the wireless portable headset is positioned in the integrated structure.
12 . The wireless system of claim 10 , wherein the first and second microphones are operative as dual omni-directional microphone array (DOMA) having a plurality of microphones, when the wireless portable headset is positioned in the integrated structure.
13 . The wireless system of claim 10 and further comprising:
a non-transitory computer readable medium including executable program instructions for the signal processing algorithms; and
a digital signal processor (DSP) included in the signal processing circuitry and operative to execute at least a portion of the executable program instructions.
14 . The wireless system of claim 10 , wherein the signal processing algorithms include a voice activity detection (VAD) algorithm.
15 . The wireless system of claim 10 , wherein the signal processing algorithms include a selected one or more of a noise suppression algorithm or a noise cancellation algorithm.
16 . The wireless system of claim 1 and further comprising:
a magnetic structure positioned on the portable wireless speaker phone, the wireless portable headset, or both and operative to apply a magnetic force operative to retain the wireless portable headset in the integrated structure.
17 . The wireless system of claim 1 and further comprising:
a photovoltaic device positioned on the portable wireless speaker phone and electrically coupled with the second internal rechargeable power source and operative to charge the second internal rechargeable power source using light radiation incident on the photovoltaic device.
18 . A method for non-contact voice activity detection, comprising:
receiving sound signals generated by sound incident on at least two spaced apart microphones, the sound signals including signals generated by a user's speech and by sound from an environment the user is positioned in;
receiving motion signals from at least one accelerometer that are derived solely by motion of the users head in the environment;
processing the sound and motion signals in a signal processor;
correlating the motion signals with the sound signals;
separating portions of the sound signals that are well correlated with the motion signals from other portions of the sound signals that are not well correlated with the motion signals;
attenuating the portions that are well correlated; and
strengthening the other portions that are not well correlated.
19 . The method of claim 18 , wherein a selected one or more of the correlating, the separating, the strengthening, or the attenuating occur in the signal processor.
20 . The method of claim 18 and further comprising:
driving a signal on a speaker as a result of a selected one or more the correlating, the separating, the strengthening, or the attenuating.