Calibrating my audio system using built-in test signals gives different results from using AVIAs test signals. Why?
The acoustic characteristics of rooms and frequency responses of speakers vary. For this reason, AVIA DVD uses an audio test signal with the recommended shape spectral distribution for setting speaker levels. This shaped noise is designed to be minimally affected by the differences between main, center, and surround speakers. Other audio test signals, such as pink noise, don’t have the same spectral distribution and consequently result in different speaker level settings.
