Conference Phone	Female Voice	Male Voice
National Brand Conference Phone with Noise Reduction
LcT Noise Reduction Technology for Conference Phone

Background: We compared our patent pending noise reduction technology with that of a leading conference phone. Both conference phone systems were recorded simultaneously to achieve the most authentic results.

Recording Conditions: Two conference phone systems were placed side by side in an office room. Two speakers were recorded at the following distances from the phones: 20 cm, 50 cm, 1 m, 2 m, and 3 m. The sampling rate was 8 KHz. The background noise was supplied by a ventilation system in an adjoining office.