DIGITAL SPEECH offers  Line echo cancellers  for client side telephony. This echo canceller is intended for near end line echo cancellation in hands-free telephones and conferencing systems. This echo is created by local telephone hybrid. If acoustic coupling between telephone loudspeaker and microphone is high in hands free mode end local hybrid echo suppression is low, then Larsen effect (howling) can take place in terminal equipment. So acoustic and line echo cancellers should be used for positive feedback decreasing and Larsen effect excluding. LEC for client side telephony has special features for seamless connection with DIGITAL SPEECH's acoustic echo canceller. It allows exclude howling (Larsen effect) in hands-free phones and conferencing equipment especially before AEC convergence.

• Fast convergence
• Fast reconvergence after echo path change
• Maximal echo path up to 128ms
• Robust double talk detector
• Non-linear processor
• Comfort noise generator matched with original noise
• Internal tone detector preventing convergence to local minimum
• Meets G168-2004 requirements
• Anti-howling control
• Seamless connection with DIGITAL SPEECH AEC