CSR is offering a multi-microphone configuration for Bluetooth headsets through a partnership with Dynamic Hearing. 

Available on the firm's BlueCore-Multimedia platform, Dynamic Hearing's ATLAS software library suite has been expanded to incorporate a multi-microphone option, called VoiceField, bringing an extremely clean transmit signal in headset environments.

VoiceField uses two microphones to capture the speech of the headset user before it is lost amongst competing noise sources.

The software also includes acoustic echo suppression, automatic handsfree volume control and programmable equalisation in 33 frequency bands of both the transmitted and received audio signal.

See www.csr.com