User17599786518076431468 (Customer) asked a question.
LFE response
I dont know if it can relate to Dolby but can someone explain clearly what do they mean with this part in the document ST2096 2017:
"If the response within the pass-band varies more than ±3 dB from a nominal flat response, and listening tests indicate that equalization is required, apply additional filters to correct for any major deviations in response so the result is within ±3 dB response tolerance in the pass-band 25 Hz – 120 Hz.
In some cases, the measured LFE response might have a definite peak rather than flat response across the pass-band. In this case, it is best to apply attenuation EQ to flatten the response, and adjust the overall channel gain to be within the target area tolerance, rather than applying boost to what appears to be a response deficiency. Boost-EQ on LFE/subwoofer systems is rarely effective, and can compromise headroom. To prevent over equalization of the subwoofer channel, some processors limit the available bands of equalization to as few as one parametric filter."
"If the response within the pass-band varies more than ±3 dB from a nominal flat response, and listening tests indicate that equalization is required, apply additional filters to correct for any major deviations in response so the result is within ±3 dB response tolerance in the pass-band 25 Hz – 120 Hz.
In some cases, the measured LFE response might have a definite peak rather than flat response across the pass-band. In this case, it is best to apply attenuation EQ to flatten the response, and adjust the overall channel gain to be within the target area tolerance, rather than applying boost to what appears to be a response deficiency. Boost-EQ on LFE/subwoofer systems is rarely effective, and can compromise headroom. To prevent over equalization of the subwoofer channel, some processors limit the available bands of equalization to as few as one parametric filter."
