David1105
21st March 2009, 00:52
Looking at FAAC encoder and two of the options are:
-b <bitrate> Set average bitrate (ABR) to approximately <bitrate> kbps.
(max. value 152 kbps/stereo with a 16 kHz cutoff, can be raised
with a higher -c setting).
-c <freq> Set the bandwidth in Hz (default: automatic, i.e. adapts
maximum value to input sample rate).
Does this mean that if I have an audio file of Sample Rate of 44.1KHz, setting "-c" to 16Khz will filter out all the waves of frequencies higher than 16KHz?
I checked the output AAC's properties but couldn't see any difference, even the filesizes are the same with varying this setting.
Also, what's the practical purpose of this setting?
-b <bitrate> Set average bitrate (ABR) to approximately <bitrate> kbps.
(max. value 152 kbps/stereo with a 16 kHz cutoff, can be raised
with a higher -c setting).
-c <freq> Set the bandwidth in Hz (default: automatic, i.e. adapts
maximum value to input sample rate).
Does this mean that if I have an audio file of Sample Rate of 44.1KHz, setting "-c" to 16Khz will filter out all the waves of frequencies higher than 16KHz?
I checked the output AAC's properties but couldn't see any difference, even the filesizes are the same with varying this setting.
Also, what's the practical purpose of this setting?